diff --git a/auto/modules b/auto/modules
index c199d89bf..0c40991f4 100644
--- a/auto/modules
+++ b/auto/modules
@@ -792,6 +792,17 @@ if [ $HTTP = YES ]; then
         . auto/module
     fi
 
+    if [ $HTTP_PROXY = YES -a $HTTP_V3 = YES ]; then
+        ngx_module_name=ngx_http_v3_proxy_module
+        ngx_module_incs=
+        ngx_module_deps=
+        ngx_module_srcs=src/http/v3/ngx_http_v3_proxy_module.c
+        ngx_module_libs=
+        ngx_module_link=$HTTP_V3
+
+        . auto/module
+    fi
+
     if [ $HTTP_PERL != NO ]; then
         ngx_module_name=ngx_http_perl_module
         ngx_module_incs=src/http/modules/perl
diff --git a/src/core/ngx_connection.c b/src/core/ngx_connection.c
index 7cae295eb..2674f18e6 100644
--- a/src/core/ngx_connection.c
+++ b/src/core/ngx_connection.c
@@ -1527,6 +1527,10 @@ ngx_tcp_nodelay(ngx_connection_t *c)
 {
     int  tcp_nodelay;
 
+    if (c->type != SOCK_STREAM) {
+        return NGX_OK;
+    }
+
     if (c->tcp_nodelay != NGX_TCP_NODELAY_UNSET) {
         return NGX_OK;
     }
diff --git a/src/core/ngx_connection.h b/src/core/ngx_connection.h
index 84dd80442..04294224e 100644
--- a/src/core/ngx_connection.h
+++ b/src/core/ngx_connection.h
@@ -150,7 +150,7 @@ struct ngx_connection_s {
     ngx_proxy_protocol_t  *proxy_protocol;
 
 #if (NGX_QUIC || NGX_COMPAT)
-    ngx_quic_stream_t     *quic;
+    ngx_quic_t            *quic;
 #endif
 
 #if (NGX_SSL || NGX_COMPAT)
diff --git a/src/core/ngx_core.h b/src/core/ngx_core.h
index 02890b843..eeed2a260 100644
--- a/src/core/ngx_core.h
+++ b/src/core/ngx_core.h
@@ -28,9 +28,10 @@ typedef struct ngx_thread_task_s     ngx_thread_task_t;
 typedef struct ngx_ssl_s             ngx_ssl_t;
 typedef struct ngx_ssl_cache_s       ngx_ssl_cache_t;
 typedef struct ngx_proxy_protocol_s  ngx_proxy_protocol_t;
-typedef struct ngx_quic_stream_s     ngx_quic_stream_t;
 typedef struct ngx_ssl_connection_s  ngx_ssl_connection_t;
 typedef struct ngx_udp_connection_s  ngx_udp_connection_t;
+typedef struct ngx_quic_s            ngx_quic_t;
+typedef struct ngx_quic_conf_s       ngx_quic_conf_t;
 
 typedef void (*ngx_event_handler_pt)(ngx_event_t *ev);
 typedef void (*ngx_connection_handler_pt)(ngx_connection_t *c);
diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
index ef525d93b..1fd94ae20 100644
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -267,18 +267,14 @@ ngx_process_events_and_timers(ngx_cycle_t *cycle)
 ngx_int_t
 ngx_handle_read_event(ngx_event_t *rev, ngx_uint_t flags)
 {
-#if (NGX_QUIC)
-
     ngx_connection_t  *c;
 
     c = rev->data;
 
-    if (c->quic) {
+    if (c->shared) {
         return NGX_OK;
     }
 
-#endif
-
     if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
 
         /* kqueue, epoll */
@@ -351,11 +347,9 @@ ngx_handle_write_event(ngx_event_t *wev, size_t lowat)
 
     c = wev->data;
 
-#if (NGX_QUIC)
-    if (c->quic) {
+    if (c->shared) {
         return NGX_OK;
     }
-#endif
 
     if (lowat) {
         if (ngx_send_lowat(c, lowat) == NGX_ERROR) {
diff --git a/src/event/quic/ngx_event_quic.c b/src/event/quic/ngx_event_quic.c
index 6a59aaf93..45aa1e877 100644
--- a/src/event/quic/ngx_event_quic.c
+++ b/src/event/quic/ngx_event_quic.c
@@ -11,16 +11,15 @@
 
 
 static ngx_quic_connection_t *ngx_quic_new_connection(ngx_connection_t *c,
-    ngx_quic_conf_t *conf, ngx_quic_header_t *pkt);
+    ngx_quic_header_t *pkt);
 static ngx_int_t ngx_quic_handle_stateless_reset(ngx_connection_t *c,
     ngx_quic_header_t *pkt);
-static void ngx_quic_input_handler(ngx_event_t *rev);
+static void ngx_quic_read_handler(ngx_event_t *rev);
+static void ngx_quic_write_handler(ngx_event_t *wev);
 static void ngx_quic_close_handler(ngx_event_t *ev);
 
-static ngx_int_t ngx_quic_handle_datagram(ngx_connection_t *c, ngx_buf_t *b,
-    ngx_quic_conf_t *conf);
 static ngx_int_t ngx_quic_handle_packet(ngx_connection_t *c,
-    ngx_quic_conf_t *conf, ngx_quic_header_t *pkt);
+    ngx_quic_header_t *pkt);
 static ngx_int_t ngx_quic_handle_payload(ngx_connection_t *c,
     ngx_quic_header_t *pkt);
 static ngx_int_t ngx_quic_check_csid(ngx_quic_connection_t *qc,
@@ -82,6 +81,7 @@ ngx_quic_connstate_dbg(ngx_connection_t *c)
         }
 
         p = ngx_slprintf(p, last, "%s", qc->shutdown ? " shutdown" : "");
+        p = ngx_slprintf(p, last, "%s", qc->lingering ? " lingering" : "");
         p = ngx_slprintf(p, last, "%s", qc->closing ? " closing" : "");
         p = ngx_slprintf(p, last, "%s", qc->draining ? " draining" : "");
         p = ngx_slprintf(p, last, "%s", qc->key_phase ? " kp" : "");
@@ -187,8 +187,8 @@ ngx_quic_apply_transport_params(ngx_connection_t *c, ngx_quic_tp_t *ctp)
         qc->tp.max_idle_timeout = ctp->max_idle_timeout;
     }
 
-    qc->streams.server_max_streams_bidi = ctp->initial_max_streams_bidi;
-    qc->streams.server_max_streams_uni = ctp->initial_max_streams_uni;
+    qc->streams.local_max_streams_bidi = ctp->initial_max_streams_bidi;
+    qc->streams.local_max_streams_uni = ctp->initial_max_streams_uni;
 
     ngx_memcpy(&qc->ctp, ctp, sizeof(ngx_quic_tp_t));
 
@@ -196,56 +196,143 @@ ngx_quic_apply_transport_params(ngx_connection_t *c, ngx_quic_tp_t *ctp)
 }
 
 
-void
-ngx_quic_run(ngx_connection_t *c, ngx_quic_conf_t *conf)
+ngx_int_t
+ngx_quic_create_connection(ngx_quic_conf_t *conf, ngx_connection_t *c,
+    ngx_uint_t flags)
+{
+    ngx_quic_t             *quic;
+    ngx_quic_connection_t  *qc;
+
+    qc = ngx_pcalloc(c->pool, sizeof(ngx_quic_connection_t));
+    if (qc == NULL) {
+        return NGX_ERROR;
+    }
+
+    qc->conf = conf;
+    qc->is_server = (flags & NGX_SSL_CLIENT) ? 0 : 1;
+
+    quic = ngx_palloc(c->pool, sizeof(ngx_quic_t));
+    if (quic == NULL) {
+        return NGX_ERROR;
+    }
+
+    quic->connection = qc;
+    quic->stream = NULL;
+
+    c->quic = quic;
+    c->start_time = ngx_current_msec;
+
+    if (qc->is_server) {
+        /* initialize server during handshake to save resources */
+        return NGX_OK;
+    }
+
+    if (ngx_quic_new_connection(c, NULL) == NULL) {
+        return NGX_ERROR;
+    }
+
+    return ngx_quic_init_connection(c, flags);
+}
+
+
+ngx_int_t
+ngx_quic_handshake(ngx_connection_t *c)
 {
     ngx_int_t               rc;
     ngx_quic_connection_t  *qc;
 
-    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic run");
+    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic handshake");
+
+    if (c->buffer) {
+        rc = ngx_quic_handle_datagram(c, c->buffer);
+
+    } else {
+        rc = ngx_quic_do_handshake(c);
+    }
 
-    rc = ngx_quic_handle_datagram(c, c->buffer, conf);
     if (rc != NGX_OK) {
-        ngx_quic_close_connection(c, rc);
-        return;
+        if (c->ssl) {
+            c->ssl->no_wait_shutdown = 1;
+        }
+
+        return NGX_ERROR;
     }
 
-    /* quic connection is now created */
+    /* quic connection is now initialized */
     qc = ngx_quic_get_connection(c);
 
-    ngx_add_timer(c->read, qc->tp.max_idle_timeout);
-
-    if (!qc->streams.initialized) {
-        ngx_add_timer(&qc->close, qc->conf->handshake_timeout);
-    }
+    ngx_add_timer(&qc->close, qc->tp.max_idle_timeout);
 
     ngx_quic_connstate_dbg(c);
 
-    c->read->handler = ngx_quic_input_handler;
+    c->read->handler = ngx_quic_read_handler;
+    c->write->handler = ngx_quic_write_handler;
 
-    return;
+    if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    return c->ssl->handshaked ? NGX_OK : NGX_AGAIN;
 }
 
 
 static ngx_quic_connection_t *
-ngx_quic_new_connection(ngx_connection_t *c, ngx_quic_conf_t *conf,
-    ngx_quic_header_t *pkt)
+ngx_quic_new_connection(ngx_connection_t *c, ngx_quic_header_t *pkt)
 {
+    ngx_str_t              *secret, scid;
     ngx_uint_t              i;
     ngx_quic_tp_t          *ctp;
+    ngx_quic_conf_t        *conf;
     ngx_quic_connection_t  *qc;
+    u_char                  scid_buf[NGX_QUIC_SERVER_CID_LEN];
 
-    qc = ngx_pcalloc(c->pool, sizeof(ngx_quic_connection_t));
-    if (qc == NULL) {
-        return NULL;
-    }
+    qc = c->quic->connection;
+    conf = qc->conf;
 
     qc->keys = ngx_pcalloc(c->pool, sizeof(ngx_quic_keys_t));
     if (qc->keys == NULL) {
         return NULL;
     }
 
-    qc->version = pkt->version;
+    if (ngx_quic_init_transport_params(&qc->tp, conf) != NGX_OK) {
+        return NULL;
+    }
+
+    if (pkt == NULL) {
+        /* client */
+
+        if (RAND_bytes(scid_buf, NGX_QUIC_SERVER_CID_LEN) != 1) {
+            return NULL;
+        }
+
+        scid.data = scid_buf;
+        scid.len = NGX_QUIC_SERVER_CID_LEN;
+        secret = &scid;
+
+        qc->validated = 1;
+        qc->version = 0x01;
+
+    } else {
+        secret = &pkt->dcid;
+        scid = pkt->scid;
+
+        qc->validated = pkt->validated;
+        qc->version = pkt->version;
+
+        if (pkt->validated && pkt->retried) {
+            qc->tp.retry_scid.len = pkt->dcid.len;
+            qc->tp.retry_scid.data = ngx_pstrdup(c->pool, &pkt->dcid);
+            if (qc->tp.retry_scid.data == NULL) {
+                return NULL;
+            }
+        }
+
+        qc->tp.original_dcid.len = pkt->odcid.len;
+        qc->tp.original_dcid.data = ngx_pstrdup(c->pool, &pkt->odcid);
+        if (qc->tp.original_dcid.data == NULL) {
+            return NULL;
+        }
+    }
 
     ngx_rbtree_init(&qc->streams.tree, &qc->streams.sentinel,
                     ngx_quic_rbtree_insert_stream);
@@ -268,32 +355,28 @@ ngx_quic_new_connection(ngx_connection_t *c, ngx_quic_conf_t *conf,
 
     ngx_quic_init_rtt(qc);
 
-    qc->pto.log = c->log;
+    qc->pto.log = ngx_cycle->log;
     qc->pto.data = c;
     qc->pto.handler = ngx_quic_pto_handler;
 
-    qc->push.log = c->log;
+    qc->push.log = ngx_cycle->log;
     qc->push.data = c;
     qc->push.handler = ngx_quic_push_handler;
 
-    qc->close.log = c->log;
+    qc->close.log = ngx_cycle->log;
     qc->close.data = c;
     qc->close.handler = ngx_quic_close_handler;
 
-    qc->path_validation.log = c->log;
+    qc->path_validation.log = ngx_cycle->log;
     qc->path_validation.data = c;
     qc->path_validation.handler = ngx_quic_path_handler;
 
-    qc->key_update.log = c->log;
+    qc->key_update.log = ngx_cycle->log;
     qc->key_update.data = c;
     qc->key_update.handler = ngx_quic_keys_update;
 
     qc->conf = conf;
 
-    if (ngx_quic_init_transport_params(&qc->tp, conf) != NGX_OK) {
-        return NULL;
-    }
-
     ctp = &qc->ctp;
 
     /* defaults to be used before actual client parameters are received */
@@ -308,8 +391,8 @@ ngx_quic_new_connection(ngx_connection_t *c, ngx_quic_conf_t *conf,
     qc->streams.recv_max_data = qc->tp.initial_max_data;
     qc->streams.recv_window = qc->streams.recv_max_data;
 
-    qc->streams.client_max_streams_uni = qc->tp.initial_max_streams_uni;
-    qc->streams.client_max_streams_bidi = qc->tp.initial_max_streams_bidi;
+    qc->streams.remote_max_streams_uni = qc->tp.initial_max_streams_uni;
+    qc->streams.remote_max_streams_bidi = qc->tp.initial_max_streams_bidi;
 
     qc->congestion.window = ngx_min(10 * NGX_QUIC_MIN_INITIAL_SIZE,
                                     ngx_max(2 * NGX_QUIC_MIN_INITIAL_SIZE,
@@ -322,29 +405,26 @@ ngx_quic_new_connection(ngx_connection_t *c, ngx_quic_conf_t *conf,
                       + conf->max_concurrent_streams_bidi)
                      * conf->stream_buffer_size / 2000;
 
-    if (pkt->validated && pkt->retried) {
-        qc->tp.retry_scid.len = pkt->dcid.len;
-        qc->tp.retry_scid.data = ngx_pstrdup(c->pool, &pkt->dcid);
-        if (qc->tp.retry_scid.data == NULL) {
-            return NULL;
-        }
-    }
-
-    if (ngx_quic_keys_set_initial_secret(qc->keys, &pkt->dcid, c->log)
+    if (ngx_quic_keys_set_initial_secret(qc->keys, secret, qc->is_server,
+                                         c->log)
         != NGX_OK)
     {
         return NULL;
     }
 
-    qc->validated = pkt->validated;
-
-    if (ngx_quic_open_sockets(c, qc, pkt) != NGX_OK) {
+    if (ngx_quic_open_sockets(c, qc, &scid, pkt ? &pkt->dcid : NULL) != NGX_OK)
+    {
         ngx_quic_keys_cleanup(qc->keys);
         return NULL;
     }
 
+    if (qc->validated) {
+        qc->path->validated = 1;
+    }
+
     c->idle = 1;
-    ngx_reusable_connection(c, 1);
+
+    qc->initialized = 1;
 
     ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
                    "quic connection created");
@@ -401,88 +481,116 @@ ngx_quic_handle_stateless_reset(ngx_connection_t *c, ngx_quic_header_t *pkt)
 
 
 static void
-ngx_quic_input_handler(ngx_event_t *rev)
+ngx_quic_read_handler(ngx_event_t *rev)
 {
-    ngx_int_t               rc;
-    ngx_buf_t              *b;
-    ngx_connection_t       *c;
-    ngx_quic_connection_t  *qc;
+    ssize_t            n;
+    ngx_buf_t          buf;
+    ngx_connection_t  *c;
+    static u_char      buffer[NGX_QUIC_MAX_UDP_PAYLOAD_SIZE];
 
-    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, rev->log, 0, "quic input handler");
+    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, rev->log, 0, "quic read handler");
 
     c = rev->data;
-    qc = ngx_quic_get_connection(c);
 
     c->log->action = "handling quic input";
 
-    if (rev->timedout) {
-        ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
-                      "quic client timed out");
-        ngx_quic_close_connection(c, NGX_DONE);
-        return;
-    }
+    while (rev->ready) {
+        n = c->recv(c, buffer, sizeof(buffer));
 
-    if (c->close) {
-        c->close = 0;
-
-        if (!ngx_exiting || !qc->streams.initialized) {
-            qc->error = NGX_QUIC_ERR_NO_ERROR;
-            qc->error_reason = "graceful shutdown";
-            ngx_quic_close_connection(c, NGX_ERROR);
-            return;
+        if (n <= 0) {
+            break;
         }
 
-        if (!qc->closing && qc->conf->shutdown) {
-            qc->conf->shutdown(c);
-        }
+        ngx_memzero(&buf, sizeof(ngx_buf_t));
 
-        return;
+        buf.pos = buffer;
+        buf.last = buffer + n;
+        buf.start = buf.pos;
+        buf.end = buffer + sizeof(buffer);
+
+        if (ngx_quic_handle_datagram(c, &buf) == NGX_ERROR) {
+            ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR,
+                               "datagram handling error");
+            break;
+        }
     }
 
-    b = c->udp->buffer;
-    if (b == NULL) {
-        return;
+    if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
+        ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR, "socket error");
     }
 
-    rc = ngx_quic_handle_datagram(c, b, NULL);
+    ngx_quic_end_handler(c);
+}
 
-    if (rc == NGX_ERROR) {
-        ngx_quic_close_connection(c, NGX_ERROR);
-        return;
-    }
 
-    if (rc == NGX_DONE) {
+static void
+ngx_quic_write_handler(ngx_event_t *wev)
+{
+    ngx_connection_t  *c;
+
+    c = wev->data;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic write handler");
+
+    ngx_del_event(c->write, NGX_WRITE_EVENT, 0);
+}
+
+
+void
+ngx_quic_end_handler(ngx_connection_t *c)
+{
+    ngx_quic_connection_t  *qc;
+
+    ngx_quic_connstate_dbg(c);
+
+    if (c->ssl == NULL || c->ssl->handler == NULL) {
         return;
     }
 
-    /* rc == NGX_OK */
+    qc = ngx_quic_get_connection(c);
 
-    qc->send_timer_set = 0;
-    ngx_add_timer(rev, qc->tp.max_idle_timeout);
+    if (!c->ssl->handshaked && qc->error == 0) {
+        return;
+    }
 
-    ngx_quic_connstate_dbg(c);
+    c->ssl->handler(c);
 }
 
 
-void
-ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
+ngx_int_t
+ngx_quic_shutdown(ngx_connection_t *c)
 {
-    ngx_uint_t              i;
-    ngx_pool_t             *pool;
+    ngx_uint_t              i, no_wait;
     ngx_quic_send_ctx_t    *ctx;
     ngx_quic_connection_t  *qc;
 
+    if (c->quic->stream) {
+        /* QUIC stream */
+        return NGX_OK;
+    }
+
     qc = ngx_quic_get_connection(c);
 
-    if (qc == NULL) {
-        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                       "quic packet rejected rc:%i, cleanup connection", rc);
+    if (!qc->initialized) {
         goto quic_done;
     }
 
-    ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                   "quic close %s rc:%i",
-                   qc->closing ? "resumed": "initiated", rc);
+    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic close %s",
+                   qc->lingering || qc->closing ? "resumed": "initiated");
+
+    no_wait = (c->ssl == NULL || c->ssl->no_wait_shutdown) ? 1 : 0;
+
+    if (!no_wait && !qc->closing) {
+        if (ngx_quic_linger_streams(c) == NGX_AGAIN) {
+
+            if (!qc->lingering) {
+                ngx_add_timer(&qc->close, 3000);
+                qc->lingering = 1;
+            }
+
+            return NGX_AGAIN;
+        }
+    }
 
     if (!qc->closing) {
 
@@ -496,7 +604,7 @@ ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
             ngx_del_timer(&qc->close);
         }
 
-        if (rc == NGX_DONE) {
+        if (qc->error == NGX_QUIC_ERR_CLOSE) {
 
             /*
              * RFC 9000, 10.1.  Idle Timeout
@@ -506,7 +614,7 @@ ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
              *  closed and its state is discarded when it remains idle
              */
 
-            /* this case also handles some errors from ngx_quic_run() */
+            /* this case also handles some errors from ngx_quic_handshake() */
 
             ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
                            "quic close silent drain:%d timedout:%d",
@@ -520,15 +628,15 @@ ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
              *  to terminate the connection immediately.
              */
 
-            if (qc->error == 0 && rc == NGX_ERROR) {
-                qc->error = NGX_QUIC_ERR_INTERNAL_ERROR;
-                qc->error_app = 0;
+            if (qc->error == 0) {
+                ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR,
+                                   "internal error");
             }
 
             ngx_log_debug5(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                           "quic close immediate term:%d drain:%d "
+                           "quic close immediate term:%ui drain:%d "
                            "%serror:%ui \"%s\"",
-                           rc == NGX_ERROR ? 1 : 0, qc->draining,
+                           no_wait, qc->draining,
                            qc->error_app ? "app " : "", qc->error,
                            qc->error_reason ? qc->error_reason : "");
 
@@ -542,22 +650,22 @@ ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
                 qc->error_level = ctx->level;
                 (void) ngx_quic_send_cc(c);
 
-                if (rc == NGX_OK) {
+                if (!no_wait) {
                     ngx_add_timer(&qc->close, 3 * ngx_quic_pto(c, ctx));
                 }
             }
         }
 
+        qc->lingering = 0;
         qc->closing = 1;
     }
 
-    if (rc == NGX_ERROR && qc->close.timer_set) {
-        /* do not wait for timer in case of fatal error */
+    if (no_wait && qc->close.timer_set) {
         ngx_del_timer(&qc->close);
     }
 
-    if (ngx_quic_close_streams(c, qc) == NGX_AGAIN) {
-        return;
+    if (ngx_quic_close_streams(c) == NGX_AGAIN) {
+        return NGX_AGAIN;
     }
 
     if (qc->push.timer_set) {
@@ -581,7 +689,7 @@ ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
     }
 
     if (qc->close.timer_set) {
-        return;
+        return NGX_AGAIN;
     }
 
     if (qc->close.posted) {
@@ -600,6 +708,7 @@ ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
 quic_done:
 
     if (c->ssl) {
+        c->ssl->no_wait_shutdown = 1;
         (void) ngx_ssl_shutdown(c);
     }
 
@@ -607,72 +716,98 @@ quic_done:
         ngx_del_timer(c->read);
     }
 
-#if (NGX_STAT_STUB)
-    (void) ngx_atomic_fetch_add(ngx_stat_active, -1);
-#endif
+    return NGX_OK;
+}
+
+
+void
+ngx_quic_set_error(ngx_connection_t *c, ngx_uint_t err, const char *reason)
+{
+    ngx_quic_connection_t  *qc;
 
-    c->destroyed = 1;
+    qc = ngx_quic_get_connection(c);
 
-    pool = c->pool;
+    if (qc->error) {
+        return;
+    }
 
-    ngx_close_connection(c);
+    ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic error %ui \"%s\"",
+                   err, reason);
 
-    ngx_destroy_pool(pool);
+    qc->error = err;
+    qc->error_reason = reason;
+    qc->error_ftype = 0;
 }
 
 
 void
-ngx_quic_finalize_connection(ngx_connection_t *c, ngx_uint_t err,
-    const char *reason)
+ngx_quic_set_app_error(ngx_connection_t *c, ngx_uint_t err, const char *reason)
 {
     ngx_quic_connection_t  *qc;
 
     qc = ngx_quic_get_connection(c);
 
-    if (qc->closing) {
+    if (qc->error) {
         return;
     }
 
+    ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic app error %ui \"%s\"",
+                   err, reason);
+
     qc->error = err;
     qc->error_reason = reason;
     qc->error_app = 1;
     qc->error_ftype = 0;
+}
+
+
+ngx_uint_t
+ngx_quic_get_error(ngx_connection_t *c)
+{
+    ngx_quic_connection_t  *qc;
+
+    qc = ngx_quic_get_connection(c);
 
-    ngx_post_event(&qc->close, &ngx_posted_events);
+    return qc->error;
 }
 
 
 void
-ngx_quic_shutdown_connection(ngx_connection_t *c, ngx_uint_t err,
-    const char *reason)
+ngx_quic_reject_streams(ngx_connection_t *c)
 {
     ngx_quic_connection_t  *qc;
 
     qc = ngx_quic_get_connection(c);
     qc->shutdown = 1;
-    qc->shutdown_code = err;
-    qc->shutdown_reason = reason;
-
-    ngx_quic_shutdown_quic(c);
 }
 
 
 static void
 ngx_quic_close_handler(ngx_event_t *ev)
 {
-    ngx_connection_t  *c;
-
-    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "quic close handler");
+    ngx_connection_t       *c;
+    ngx_quic_connection_t  *qc;
 
     c = ev->data;
 
-    ngx_quic_close_connection(c, NGX_OK);
+    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic close handler");
+
+    if (ev->timedout) {
+        ev->timedout = 0;
+        ngx_quic_set_error(c, NGX_QUIC_ERR_CLOSE, "");
+
+        qc = ngx_quic_get_connection(c);
+        if (qc->lingering) {
+            c->ssl->no_wait_shutdown = 1;
+        }
+    }
+
+    ngx_quic_end_handler(c);
 }
 
 
-static ngx_int_t
-ngx_quic_handle_datagram(ngx_connection_t *c, ngx_buf_t *b,
-    ngx_quic_conf_t *conf)
+ngx_int_t
+ngx_quic_handle_datagram(ngx_connection_t *c, ngx_buf_t *b)
 {
     size_t                  size;
     u_char                 *p, *start;
@@ -686,9 +821,11 @@ ngx_quic_handle_datagram(ngx_connection_t *c, ngx_buf_t *b,
     path = NULL;
 
     size = b->last - b->pos;
-
     p = start = b->pos;
 
+    qc = ngx_quic_get_connection(c);
+    qc->received += size;
+
     while (p < b->last) {
 
         ngx_memzero(&pkt, sizeof(ngx_quic_header_t));
@@ -701,7 +838,7 @@ ngx_quic_handle_datagram(ngx_connection_t *c, ngx_buf_t *b,
         pkt.flags = p[0];
         pkt.raw->pos++;
 
-        rc = ngx_quic_handle_packet(c, conf, &pkt);
+        rc = ngx_quic_handle_packet(c, &pkt);
 
 #if (NGX_DEBUG)
         if (pkt.parsed) {
@@ -755,32 +892,30 @@ ngx_quic_handle_datagram(ngx_connection_t *c, ngx_buf_t *b,
         return NGX_DONE;
     }
 
-    qc = ngx_quic_get_connection(c);
-
-    if (qc) {
-        qc->received += size;
-
-        if ((uint64_t) (c->sent + qc->received) / 8 >
-            (qc->streams.sent + qc->streams.recv_last) + 1048576)
-        {
-            ngx_log_error(NGX_LOG_INFO, c->log, 0, "quic flood detected");
+    if ((uint64_t) (c->sent + qc->received) / 8 >
+        (qc->streams.sent + qc->streams.recv_last) + 1048576)
+    {
+        ngx_log_error(NGX_LOG_INFO, c->log, 0, "quic flood detected");
 
-            qc->error = NGX_QUIC_ERR_NO_ERROR;
-            qc->error_reason = "QUIC flood detected";
-            return NGX_ERROR;
-        }
+        qc->error = NGX_QUIC_ERR_INTERNAL_ERROR;
+        qc->error_reason = "QUIC flood detected";
+        return NGX_ERROR;
     }
 
+    qc->send_timer_set = 0;
+    ngx_add_timer(&qc->close, qc->tp.max_idle_timeout);
+
     return NGX_OK;
 }
 
 
 static ngx_int_t
-ngx_quic_handle_packet(ngx_connection_t *c, ngx_quic_conf_t *conf,
-    ngx_quic_header_t *pkt)
+ngx_quic_handle_packet(ngx_connection_t *c, ngx_quic_header_t *pkt)
 {
     ngx_int_t               rc;
+    ngx_quic_conf_t        *conf;
     ngx_quic_socket_t      *qsock;
+    ngx_quic_client_id_t   *cid;
     ngx_quic_connection_t  *qc;
 
     c->log->action = "parsing quic packet";
@@ -815,7 +950,7 @@ ngx_quic_handle_packet(ngx_connection_t *c, ngx_quic_conf_t *conf,
 
     qc = ngx_quic_get_connection(c);
 
-    if (qc) {
+    if (qc->initialized) {
 
         if (rc == NGX_ABORT) {
             ngx_log_error(NGX_LOG_INFO, c->log, 0,
@@ -845,14 +980,35 @@ ngx_quic_handle_packet(ngx_connection_t *c, ngx_quic_conf_t *conf,
                 }
             }
 
-            if (ngx_quic_check_csid(qc, pkt) != NGX_OK) {
-                return NGX_DECLINED;
+            if (qc->is_server) {
+                if (ngx_quic_check_csid(qc, pkt) != NGX_OK) {
+                    return NGX_DECLINED;
+                }
             }
-
         }
 
         rc = ngx_quic_handle_payload(c, pkt);
 
+        if (rc == NGX_OK
+            && !qc->is_server
+            && !qc->scid_set
+            && pkt->level == NGX_QUIC_ENCRYPTION_INITIAL)
+        {
+            /* RFC 9000, 7.2. Negotiating Connection IDs
+             *
+             * After processing the first Initial packet, each endpoint sets
+             * the Destination Connection ID field in subsequent packets it
+             * sends to the value of the Source Connection ID field that it
+             * received.
+             */
+
+            qc->scid_set = 1;
+
+            cid = qc->path->cid;
+            ngx_memcpy(cid->id, pkt->scid.data, pkt->scid.len);
+            cid->len = pkt->scid.len;
+        }
+
         if (rc == NGX_DECLINED
             && pkt->level == NGX_QUIC_ENCRYPTION_APPLICATION)
         {
@@ -861,7 +1017,7 @@ ngx_quic_handle_packet(ngx_connection_t *c, ngx_quic_conf_t *conf,
                               "quic stateless reset packet detected");
 
                 qc->draining = 1;
-                ngx_post_event(&qc->close, &ngx_posted_events);
+                qc->error = NGX_QUIC_ERR_CLOSE;
 
                 return NGX_OK;
             }
@@ -870,7 +1026,9 @@ ngx_quic_handle_packet(ngx_connection_t *c, ngx_quic_conf_t *conf,
         return rc;
     }
 
-    /* packet does not belong to a connection */
+    /* connection has not been initialized yet */
+
+    conf = c->quic->connection->conf;
 
     if (rc == NGX_ABORT) {
         return ngx_quic_negotiate_version(c, pkt);
@@ -944,7 +1102,7 @@ ngx_quic_handle_packet(ngx_connection_t *c, ngx_quic_conf_t *conf,
 
     c->log->action = "creating quic connection";
 
-    qc = ngx_quic_new_connection(c, conf, pkt);
+    qc = ngx_quic_new_connection(c, pkt);
     if (qc == NULL) {
         return NGX_ERROR;
     }
@@ -963,9 +1121,6 @@ ngx_quic_handle_payload(ngx_connection_t *c, ngx_quic_header_t *pkt)
 
     qc = ngx_quic_get_connection(c);
 
-    qc->error = 0;
-    qc->error_reason = NULL;
-
     c->log->action = "decrypting packet";
 
     if (!ngx_quic_keys_available(qc->keys, pkt->level, 0)) {
@@ -1011,7 +1166,7 @@ ngx_quic_handle_payload(ngx_connection_t *c, ngx_quic_header_t *pkt)
     }
 
     if (c->ssl == NULL) {
-        if (ngx_quic_init_connection(c) != NGX_OK) {
+        if (ngx_quic_init_connection(c, 0) != NGX_OK) {
             return NGX_ERROR;
         }
     }
@@ -1201,7 +1356,7 @@ ngx_quic_handle_frames(ngx_connection_t *c, ngx_quic_header_t *pkt)
         chain.next = NULL;
         frame.data = &chain;
 
-        len = ngx_quic_parse_frame(pkt, p, end, &frame);
+        len = ngx_quic_parse_frame(pkt, p, end, &frame, qc->is_server);
 
         if (len < 0) {
             qc->error = pkt->error;
@@ -1263,6 +1418,14 @@ ngx_quic_handle_frames(ngx_connection_t *c, ngx_quic_header_t *pkt)
         case NGX_QUIC_FT_PING:
             break;
 
+        case NGX_QUIC_FT_NEW_TOKEN:
+
+            if (ngx_quic_handle_new_token_frame(c, &frame) != NGX_OK) {
+                return NGX_ERROR;
+            }
+
+            break;
+
         case NGX_QUIC_FT_STREAM:
 
             if (ngx_quic_handle_stream_frame(c, pkt, &frame) != NGX_OK) {
@@ -1400,6 +1563,14 @@ ngx_quic_handle_frames(ngx_connection_t *c, ngx_quic_header_t *pkt)
 
             break;
 
+        case NGX_QUIC_FT_HANDSHAKE_DONE:
+
+            if (ngx_quic_handle_handshake_done_frame(c) != NGX_OK) {
+                return NGX_ERROR;
+            }
+
+            break;
+
         default:
             ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
                            "quic missing frame handler");
@@ -1417,7 +1588,7 @@ ngx_quic_handle_frames(ngx_connection_t *c, ngx_quic_header_t *pkt)
 
     if (do_close) {
         qc->draining = 1;
-        ngx_post_event(&qc->close, &ngx_posted_events);
+        qc->error = NGX_QUIC_ERR_CLOSE;
     }
 
     if (pkt->path != qc->path && nonprobing) {
@@ -1447,26 +1618,13 @@ ngx_quic_push_handler(ngx_event_t *ev)
 {
     ngx_connection_t  *c;
 
-    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "quic push handler");
-
     c = ev->data;
 
+    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic push handler");
+
     if (ngx_quic_output(c) != NGX_OK) {
-        ngx_quic_close_connection(c, NGX_ERROR);
-        return;
+        ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR, "output error");
     }
 
-    ngx_quic_connstate_dbg(c);
-}
-
-
-void
-ngx_quic_shutdown_quic(ngx_connection_t *c)
-{
-    ngx_quic_connection_t  *qc;
-
-    if (c->reusable) {
-        qc = ngx_quic_get_connection(c);
-        ngx_quic_finalize_connection(c, qc->shutdown_code, qc->shutdown_reason);
-    }
+    ngx_quic_end_handler(c);
 }
diff --git a/src/event/quic/ngx_event_quic.h b/src/event/quic/ngx_event_quic.h
index 4f899ec0a..ed2f55c76 100644
--- a/src/event/quic/ngx_event_quic.h
+++ b/src/event/quic/ngx_event_quic.h
@@ -44,6 +44,7 @@
 #define NGX_QUIC_STREAM_UNIDIRECTIONAL       0x02
 
 
+typedef struct ngx_quic_connection_s  ngx_quic_connection_t;
 typedef ngx_int_t (*ngx_quic_init_pt)(ngx_connection_t *c);
 typedef void (*ngx_quic_shutdown_pt)(ngx_connection_t *c);
 
@@ -77,13 +78,12 @@ typedef struct {
 } ngx_quic_buffer_t;
 
 
-typedef struct {
+struct ngx_quic_conf_s {
     ngx_ssl_t                     *ssl;
 
     ngx_flag_t                     retry;
     ngx_flag_t                     gso_enabled;
     ngx_flag_t                     disable_active_migration;
-    ngx_msec_t                     handshake_timeout;
     ngx_msec_t                     idle_timeout;
     ngx_str_t                      host_key;
     size_t                         stream_buffer_size;
@@ -94,15 +94,12 @@ typedef struct {
     ngx_int_t                      stream_reject_code_uni;
     ngx_int_t                      stream_reject_code_bidi;
 
-    ngx_quic_init_pt               init;
-    ngx_quic_shutdown_pt           shutdown;
-
     u_char                         av_token_key[NGX_QUIC_AV_KEY_LEN];
     u_char                         sr_token_key[NGX_QUIC_SR_KEY_LEN];
-} ngx_quic_conf_t;
+};
 
 
-struct ngx_quic_stream_s {
+typedef struct {
     ngx_rbtree_node_t              node;
     ngx_queue_t                    queue;
     ngx_connection_t              *parent;
@@ -122,21 +119,31 @@ struct ngx_quic_stream_s {
     ngx_quic_buffer_t              recv;
     ngx_quic_stream_send_state_e   send_state;
     ngx_quic_stream_recv_state_e   recv_state;
-    unsigned                       cancelable:1;
     unsigned                       fin_acked:1;
+} ngx_quic_stream_t;
+
+
+struct ngx_quic_s {
+    ngx_quic_connection_t         *connection;
+    ngx_quic_stream_t             *stream;
 };
 
 
 void ngx_quic_recvmsg(ngx_event_t *ev);
-void ngx_quic_run(ngx_connection_t *c, ngx_quic_conf_t *conf);
+ngx_int_t ngx_quic_create_connection(ngx_quic_conf_t *conf, ngx_connection_t *c,
+    ngx_uint_t flags);
+ngx_int_t ngx_quic_handshake(ngx_connection_t *c);
+ngx_connection_t *ngx_quic_accept_stream(ngx_connection_t *c);
+ngx_int_t ngx_quic_has_streams(ngx_connection_t *c, ngx_uint_t local,
+    ngx_uint_t bidi);
 ngx_connection_t *ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi);
-void ngx_quic_finalize_connection(ngx_connection_t *c, ngx_uint_t err,
-    const char *reason);
-void ngx_quic_shutdown_connection(ngx_connection_t *c, ngx_uint_t err,
+void ngx_quic_set_app_error(ngx_connection_t *c, ngx_uint_t err,
     const char *reason);
+ngx_uint_t ngx_quic_get_error(ngx_connection_t *c);
+ngx_int_t ngx_quic_shutdown(ngx_connection_t *c);
+void ngx_quic_reject_streams(ngx_connection_t *c);
 ngx_int_t ngx_quic_reset_stream(ngx_connection_t *c, ngx_uint_t err);
 ngx_int_t ngx_quic_shutdown_stream(ngx_connection_t *c, int how);
-void ngx_quic_cancelable_stream(ngx_connection_t *c);
 ngx_int_t ngx_quic_get_packet_dcid(ngx_log_t *log, u_char *data, size_t len,
     ngx_str_t *dcid);
 ngx_int_t ngx_quic_derive_key(ngx_log_t *log, const char *label,
diff --git a/src/event/quic/ngx_event_quic_ack.c b/src/event/quic/ngx_event_quic_ack.c
index abd3f7ade..b72acafa3 100644
--- a/src/event/quic/ngx_event_quic_ack.c
+++ b/src/event/quic/ngx_event_quic_ack.c
@@ -810,8 +810,8 @@ ngx_quic_resend_frames(ngx_connection_t *c, ngx_quic_send_ctx_t *ctx)
         case NGX_QUIC_FT_MAX_STREAMS:
         case NGX_QUIC_FT_MAX_STREAMS2:
             f->u.max_streams.limit = f->u.max_streams.bidi
-                                     ? qc->streams.client_max_streams_bidi
-                                     : qc->streams.client_max_streams_uni;
+                                     ? qc->streams.remote_max_streams_bidi
+                                     : qc->streams.remote_max_streams_uni;
             ngx_quic_queue_frame(qc, f);
             break;
 
@@ -1091,11 +1091,10 @@ void ngx_quic_lost_handler(ngx_event_t *ev)
     c = ev->data;
 
     if (ngx_quic_detect_lost(c, NULL) != NGX_OK) {
-        ngx_quic_close_connection(c, NGX_ERROR);
-        return;
+        ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR, "lost detect error");
     }
 
-    ngx_quic_connstate_dbg(c);
+    ngx_quic_end_handler(c);
 }
 
 
@@ -1111,12 +1110,12 @@ ngx_quic_pto_handler(ngx_event_t *ev)
     ngx_quic_send_ctx_t    *ctx;
     ngx_quic_connection_t  *qc;
 
-    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "quic pto timer");
-
     c = ev->data;
     qc = ngx_quic_get_connection(c);
     now = ngx_current_msec;
 
+    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic pto timer");
+
     for (i = 0; i < NGX_QUIC_SEND_CTX_LAST; i++) {
 
         ctx = &qc->send_ctx[i];
@@ -1148,7 +1147,9 @@ ngx_quic_pto_handler(ngx_event_t *ev)
 
             f = ngx_quic_alloc_frame(c);
             if (f == NULL) {
-                goto failed;
+                ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR,
+                                   "memory error");
+                goto done;
             }
 
             f->level = ctx->level;
@@ -1156,7 +1157,9 @@ ngx_quic_pto_handler(ngx_event_t *ev)
             f->ignore_congestion = 1;
 
             if (ngx_quic_frame_sendto(c, f, 0, qc->path) == NGX_ERROR) {
-                goto failed;
+                ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR,
+                                   "send error");
+                goto done;
             }
         }
     }
@@ -1165,14 +1168,9 @@ ngx_quic_pto_handler(ngx_event_t *ev)
 
     ngx_quic_set_lost_timer(c);
 
-    ngx_quic_connstate_dbg(c);
-
-    return;
-
-failed:
+done:
 
-    ngx_quic_close_connection(c, NGX_ERROR);
-    return;
+    ngx_quic_end_handler(c);
 }
 
 
diff --git a/src/event/quic/ngx_event_quic_connection.h b/src/event/quic/ngx_event_quic_connection.h
index 33922cf80..879052bf4 100644
--- a/src/event/quic/ngx_event_quic_connection.h
+++ b/src/event/quic/ngx_event_quic_connection.h
@@ -26,7 +26,6 @@
 #define NGX_QUIC_SEND_CTX_LAST               (NGX_QUIC_ENCRYPTION_LAST - 1)
 
 
-typedef struct ngx_quic_connection_s  ngx_quic_connection_t;
 typedef struct ngx_quic_server_id_s   ngx_quic_server_id_t;
 typedef struct ngx_quic_client_id_s   ngx_quic_client_id_t;
 typedef struct ngx_quic_send_ctx_s    ngx_quic_send_ctx_t;
@@ -67,8 +66,7 @@ typedef struct ngx_quic_keys_s        ngx_quic_keys_t;
         : (((level) == NGX_QUIC_ENCRYPTION_HANDSHAKE) ? &((qc)->send_ctx[1])  \
                                                       : &((qc)->send_ctx[2]))
 
-#define ngx_quic_get_connection(c)                                            \
-    (((c)->udp) ? (((ngx_quic_socket_t *)((c)->udp))->quic) : NULL)
+#define ngx_quic_get_connection(c)           ((c)->quic->connection)
 
 #define ngx_quic_get_socket(c)               ((ngx_quic_socket_t *)((c)->udp))
 
@@ -156,18 +154,15 @@ typedef struct {
     uint64_t                          send_offset;
     uint64_t                          send_max_data;
 
-    uint64_t                          server_max_streams_uni;
-    uint64_t                          server_max_streams_bidi;
-    uint64_t                          server_streams_uni;
-    uint64_t                          server_streams_bidi;
+    uint64_t                          local_max_streams_uni;
+    uint64_t                          local_max_streams_bidi;
+    uint64_t                          local_streams_uni;
+    uint64_t                          local_streams_bidi;
 
-    uint64_t                          client_max_streams_uni;
-    uint64_t                          client_max_streams_bidi;
-    uint64_t                          client_streams_uni;
-    uint64_t                          client_streams_bidi;
-
-    ngx_uint_t                        initialized;
-                                                 /* unsigned  initialized:1; */
+    uint64_t                          remote_max_streams_uni;
+    uint64_t                          remote_max_streams_bidi;
+    uint64_t                          remote_streams_uni;
+    uint64_t                          remote_streams_bidi;
 } ngx_quic_streams_t;
 
 
@@ -290,17 +285,19 @@ struct ngx_quic_connection_s {
     ngx_uint_t                        error_ftype;
     const char                       *error_reason;
 
-    ngx_uint_t                        shutdown_code;
-    const char                       *shutdown_reason;
-
+    unsigned                          initialized:1;
+    unsigned                          handshaked:1;
+    unsigned                          is_server:1;
+    unsigned                          scid_set:1;
     unsigned                          error_app:1;
     unsigned                          send_timer_set:1;
+    unsigned                          lingering:1;
     unsigned                          closing:1;
     unsigned                          shutdown:1;
     unsigned                          draining:1;
     unsigned                          key_phase:1;
     unsigned                          validated:1;
-    unsigned                          client_tp_done:1;
+    unsigned                          peer_tp_done:1;
 
 #if (NGX_QUIC_OPENSSL_API)
     unsigned                          read_level:2;
@@ -309,11 +306,13 @@ struct ngx_quic_connection_s {
 };
 
 
+ngx_int_t ngx_quic_handle_datagram(ngx_connection_t *c, ngx_buf_t *b);
 ngx_int_t ngx_quic_apply_transport_params(ngx_connection_t *c,
     ngx_quic_tp_t *ctp);
 void ngx_quic_discard_ctx(ngx_connection_t *c, ngx_uint_t level);
-void ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc);
-void ngx_quic_shutdown_quic(ngx_connection_t *c);
+void ngx_quic_end_handler(ngx_connection_t *c);
+void ngx_quic_set_error(ngx_connection_t *c, ngx_uint_t err,
+    const char *reason);
 
 #if (NGX_DEBUG)
 void ngx_quic_connstate_dbg(ngx_connection_t *c);
diff --git a/src/event/quic/ngx_event_quic_connid.c b/src/event/quic/ngx_event_quic_connid.c
index 4e7b8dc22..340b736e7 100644
--- a/src/event/quic/ngx_event_quic_connid.c
+++ b/src/event/quic/ngx_event_quic_connid.c
@@ -51,6 +51,10 @@ ngx_quic_bpf_attach_id(ngx_connection_t *c, u_char *id)
     uint64_t   cookie;
     socklen_t  optlen;
 
+    if (c->listening == NULL) {
+        return NGX_OK;
+    }
+
     fd = c->listening->fd;
 
     optlen = sizeof(cookie);
diff --git a/src/event/quic/ngx_event_quic_migration.c b/src/event/quic/ngx_event_quic_migration.c
index 42354ca66..568020488 100644
--- a/src/event/quic/ngx_event_quic_migration.c
+++ b/src/event/quic/ngx_event_quic_migration.c
@@ -313,12 +313,6 @@ ngx_quic_set_path(ngx_connection_t *c, ngx_quic_header_t *pkt)
 
     len = pkt->raw->last - pkt->raw->start;
 
-    if (c->udp->buffer == NULL) {
-        /* first ever packet in connection, path already exists  */
-        path = qc->path;
-        goto update;
-    }
-
     probe = NULL;
 
     for (q = ngx_queue_head(&qc->paths);
@@ -724,21 +718,25 @@ ngx_quic_path_handler(ngx_event_t *ev)
         switch (path->state) {
         case NGX_QUIC_PATH_VALIDATING:
             if (ngx_quic_expire_path_validation(c, path) != NGX_OK) {
-                goto failed;
+                ngx_quic_set_error(c, NGX_QUIC_ERR_NO_VIABLE_PATH,
+                                   "path error");
+                goto done;
             }
 
             break;
 
         case NGX_QUIC_PATH_WAITING:
             if (ngx_quic_expire_path_mtu_delay(c, path) != NGX_OK) {
-                goto failed;
+                ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR, "mtu error");
+                goto done;
             }
 
             break;
 
         case NGX_QUIC_PATH_MTUD:
             if (ngx_quic_expire_path_mtu_discovery(c, path) != NGX_OK) {
-                goto failed;
+                ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR, "mtu error");
+                goto done;
             }
 
             break;
@@ -750,11 +748,9 @@ ngx_quic_path_handler(ngx_event_t *ev)
 
     ngx_quic_set_path_timer(c);
 
-    return;
-
-failed:
+done:
 
-    ngx_quic_close_connection(c, NGX_ERROR);
+    ngx_quic_end_handler(c);
 }
 
 
diff --git a/src/event/quic/ngx_event_quic_openssl_compat.c b/src/event/quic/ngx_event_quic_openssl_compat.c
index 58298dcb8..fb6345b4d 100644
--- a/src/event/quic/ngx_event_quic_openssl_compat.c
+++ b/src/event/quic/ngx_event_quic_openssl_compat.c
@@ -116,6 +116,8 @@ ngx_quic_compat_keylog_callback(const SSL *ssl, const char *line)
         return;
     }
 
+    qc = ngx_quic_get_connection(c);
+
     p = (u_char *) line;
 
     for (start = p; *p && *p != ' '; p++);
@@ -129,27 +131,27 @@ ngx_quic_compat_keylog_callback(const SSL *ssl, const char *line)
         && ngx_strncmp(start, NGX_QUIC_COMPAT_CLIENT_HANDSHAKE, n) == 0)
     {
         level = ssl_encryption_handshake;
-        write = 0;
+        write = !qc->is_server;
 
     } else if (n == sizeof(NGX_QUIC_COMPAT_SERVER_HANDSHAKE) - 1
                && ngx_strncmp(start, NGX_QUIC_COMPAT_SERVER_HANDSHAKE, n) == 0)
     {
         level = ssl_encryption_handshake;
-        write = 1;
+        write = qc->is_server;
 
     } else if (n == sizeof(NGX_QUIC_COMPAT_CLIENT_APPLICATION) - 1
                && ngx_strncmp(start, NGX_QUIC_COMPAT_CLIENT_APPLICATION, n)
                   == 0)
     {
         level = ssl_encryption_application;
-        write = 0;
+        write = !qc->is_server;
 
     } else if (n == sizeof(NGX_QUIC_COMPAT_SERVER_APPLICATION) - 1
                && ngx_strncmp(start, NGX_QUIC_COMPAT_SERVER_APPLICATION, n)
                    == 0)
     {
         level = ssl_encryption_application;
-        write = 1;
+        write = qc->is_server;
 
     } else {
         return;
@@ -201,7 +203,6 @@ ngx_quic_compat_keylog_callback(const SSL *ssl, const char *line)
         }
     }
 
-    qc = ngx_quic_get_connection(c);
     com = qc->compat;
     cipher = SSL_get_current_cipher(ssl);
 
diff --git a/src/event/quic/ngx_event_quic_output.c b/src/event/quic/ngx_event_quic_output.c
index 8c3350504..a1a51d036 100644
--- a/src/event/quic/ngx_event_quic_output.c
+++ b/src/event/quic/ngx_event_quic_output.c
@@ -101,7 +101,7 @@ ngx_quic_output(ngx_connection_t *c)
 
     if (!qc->send_timer_set) {
         qc->send_timer_set = 1;
-        ngx_add_timer(c->read, qc->tp.max_idle_timeout);
+        ngx_add_timer(&qc->close, qc->tp.max_idle_timeout);
     }
 
     ngx_quic_set_lost_timer(c);
@@ -710,7 +710,24 @@ ngx_quic_init_packet(ngx_connection_t *c, ngx_quic_send_ctx_t *ctx,
 
     pkt->keys = qc->keys;
 
+    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "quic packet tx %s", ngx_quic_level_name(pkt->level));
+
+    ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "quic packet tx dcid len:%uz %*xs",
+                   pkt->dcid.len, pkt->dcid.len, pkt->dcid.data);
+
+    if (pkt->level != NGX_QUIC_ENCRYPTION_APPLICATION) {
+        ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                       "quic packet tx scid len:%uz %*xs",
+                       pkt->scid.len, pkt->scid.len, pkt->scid.data);
+    }
+
     ngx_quic_set_packet_number(pkt, ctx);
+
+    ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "quic packet tx number:%uL len:%d",
+                   pkt->number, pkt->num_len);
 }
 
 
@@ -952,7 +969,7 @@ ngx_quic_send_early_cc(ngx_connection_t *c, ngx_quic_header_t *inpkt,
 
     pkt.keys = &keys;
 
-    if (ngx_quic_keys_set_initial_secret(pkt.keys, &inpkt->dcid, c->log)
+    if (ngx_quic_keys_set_initial_secret(pkt.keys, &inpkt->dcid, 1, c->log)
         != NGX_OK)
     {
         return NGX_ERROR;
@@ -1322,7 +1339,7 @@ ngx_quic_frame_sendto(ngx_connection_t *c, ngx_quic_frame_t *frame,
 
     if (!qc->send_timer_set) {
         qc->send_timer_set = 1;
-        ngx_add_timer(c->read, qc->tp.max_idle_timeout);
+        ngx_add_timer(&qc->close, qc->tp.max_idle_timeout);
     }
 
     ngx_quic_set_lost_timer(c);
diff --git a/src/event/quic/ngx_event_quic_protection.c b/src/event/quic/ngx_event_quic_protection.c
index 2f28737a2..8c2fd764c 100644
--- a/src/event/quic/ngx_event_quic_protection.c
+++ b/src/event/quic/ngx_event_quic_protection.c
@@ -119,7 +119,7 @@ ngx_quic_ciphers(ngx_uint_t id, ngx_quic_ciphers_t *ciphers)
 
 ngx_int_t
 ngx_quic_keys_set_initial_secret(ngx_quic_keys_t *keys, ngx_str_t *secret,
-    ngx_log_t *log)
+    ngx_uint_t is_server, ngx_log_t *log)
 {
     size_t               is_len;
     uint8_t              is[SHA256_DIGEST_LENGTH];
@@ -136,8 +136,14 @@ ngx_quic_keys_set_initial_secret(ngx_quic_keys_t *keys, ngx_str_t *secret,
         0x9a, 0xe6, 0xa4, 0xc8, 0x0c, 0xad, 0xcc, 0xbb, 0x7f, 0x0a
     };
 
-    client = &keys->secrets[NGX_QUIC_ENCRYPTION_INITIAL].client;
-    server = &keys->secrets[NGX_QUIC_ENCRYPTION_INITIAL].server;
+    if (is_server) {
+        client = &keys->secrets[NGX_QUIC_ENCRYPTION_INITIAL].read;
+        server = &keys->secrets[NGX_QUIC_ENCRYPTION_INITIAL].write;
+
+    } else {
+        client = &keys->secrets[NGX_QUIC_ENCRYPTION_INITIAL].write;
+        server = &keys->secrets[NGX_QUIC_ENCRYPTION_INITIAL].read;
+    }
 
     /*
      * RFC 9001, section 5.  Packet Protection
@@ -200,13 +206,13 @@ ngx_quic_keys_set_initial_secret(ngx_quic_keys_t *keys, ngx_str_t *secret,
         return NGX_ERROR;
     }
 
-    if (ngx_quic_crypto_init(ciphers.c, client, &client_key, 0, log)
+    if (ngx_quic_crypto_init(ciphers.c, client, &client_key, !is_server, log)
         == NGX_ERROR)
     {
         return NGX_ERROR;
     }
 
-    if (ngx_quic_crypto_init(ciphers.c, server, &server_key, 1, log)
+    if (ngx_quic_crypto_init(ciphers.c, server, &server_key, is_server, log)
         == NGX_ERROR)
     {
         goto failed;
@@ -673,8 +679,8 @@ ngx_quic_keys_set_encryption_secret(ngx_log_t *log, ngx_uint_t is_write,
     ngx_quic_secret_t   *peer_secret;
     ngx_quic_ciphers_t   ciphers;
 
-    peer_secret = is_write ? &keys->secrets[level].server
-                           : &keys->secrets[level].client;
+    peer_secret = is_write ? &keys->secrets[level].write
+                           : &keys->secrets[level].read;
 
     keys->cipher = SSL_CIPHER_get_id(cipher);
 
@@ -732,35 +738,35 @@ ngx_quic_keys_available(ngx_quic_keys_t *keys, ngx_uint_t level,
     ngx_uint_t is_write)
 {
     if (is_write == 0) {
-        return keys->secrets[level].client.ctx != NULL;
+        return keys->secrets[level].read.ctx != NULL;
     }
 
-    return keys->secrets[level].server.ctx != NULL;
+    return keys->secrets[level].write.ctx != NULL;
 }
 
 
 void
 ngx_quic_keys_discard(ngx_quic_keys_t *keys, ngx_uint_t level)
 {
-    ngx_quic_secret_t  *client, *server;
+    ngx_quic_secret_t  *read, *write;
 
-    client = &keys->secrets[level].client;
-    server = &keys->secrets[level].server;
+    read = &keys->secrets[level].read;
+    write = &keys->secrets[level].write;
 
-    ngx_quic_crypto_cleanup(client);
-    ngx_quic_crypto_cleanup(server);
+    ngx_quic_crypto_cleanup(read);
+    ngx_quic_crypto_cleanup(write);
 
-    ngx_quic_crypto_hp_cleanup(client);
-    ngx_quic_crypto_hp_cleanup(server);
+    ngx_quic_crypto_hp_cleanup(read);
+    ngx_quic_crypto_hp_cleanup(write);
 
-    if (client->secret.len) {
-        ngx_explicit_memzero(client->secret.data, client->secret.len);
-        client->secret.len = 0;
+    if (read->secret.len) {
+        ngx_explicit_memzero(read->secret.data, read->secret.len);
+        read->secret.len = 0;
     }
 
-    if (server->secret.len) {
-        ngx_explicit_memzero(server->secret.data, server->secret.len);
-        server->secret.len = 0;
+    if (write->secret.len) {
+        ngx_explicit_memzero(write->secret.data, write->secret.len);
+        write->secret.len = 0;
     }
 }
 
@@ -773,8 +779,8 @@ ngx_quic_keys_switch(ngx_connection_t *c, ngx_quic_keys_t *keys)
     current = &keys->secrets[NGX_QUIC_ENCRYPTION_APPLICATION];
     next = &keys->next_key;
 
-    ngx_quic_crypto_cleanup(&current->client);
-    ngx_quic_crypto_cleanup(&current->server);
+    ngx_quic_crypto_cleanup(&current->read);
+    ngx_quic_crypto_cleanup(&current->write);
 
     tmp = *current;
     *current = *next;
@@ -787,7 +793,7 @@ ngx_quic_keys_update(ngx_event_t *ev)
 {
     ngx_int_t               key_len;
     ngx_uint_t              i;
-    ngx_quic_md_t           client_key, server_key;
+    ngx_quic_md_t           read_key, write_key;
     ngx_quic_hkdf_t         seq[6];
     ngx_quic_keys_t        *keys;
     ngx_connection_t       *c;
@@ -809,69 +815,71 @@ ngx_quic_keys_update(ngx_event_t *ev)
     key_len = ngx_quic_ciphers(keys->cipher, &ciphers);
 
     if (key_len == NGX_ERROR) {
-        goto failed;
+        ngx_quic_set_error(c, NGX_QUIC_ERR_KEY_UPDATE_ERROR, "key error");
+        goto done;
     }
 
-    client_key.len = key_len;
-    server_key.len = key_len;
+    read_key.len = key_len;
+    write_key.len = key_len;
 
-    next->client.secret.len = current->client.secret.len;
-    next->client.iv.len = NGX_QUIC_IV_LEN;
-    next->client.hp = current->client.hp;
-    next->client.hp_ctx = current->client.hp_ctx;
+    next->read.secret.len = current->read.secret.len;
+    next->read.iv.len = NGX_QUIC_IV_LEN;
+    next->read.hp = current->read.hp;
+    next->read.hp_ctx = current->read.hp_ctx;
 
-    next->server.secret.len = current->server.secret.len;
-    next->server.iv.len = NGX_QUIC_IV_LEN;
-    next->server.hp = current->server.hp;
-    next->server.hp_ctx = current->server.hp_ctx;
+    next->write.secret.len = current->write.secret.len;
+    next->write.iv.len = NGX_QUIC_IV_LEN;
+    next->write.hp = current->write.hp;
+    next->write.hp_ctx = current->write.hp_ctx;
 
     ngx_quic_hkdf_set(&seq[0], "tls13 quic ku",
-                      &next->client.secret, &current->client.secret);
+                      &next->read.secret, &current->read.secret);
     ngx_quic_hkdf_set(&seq[1], "tls13 quic key",
-                      &client_key, &next->client.secret);
+                      &read_key, &next->read.secret);
     ngx_quic_hkdf_set(&seq[2], "tls13 quic iv",
-                      &next->client.iv, &next->client.secret);
+                      &next->read.iv, &next->read.secret);
     ngx_quic_hkdf_set(&seq[3], "tls13 quic ku",
-                      &next->server.secret, &current->server.secret);
+                      &next->write.secret, &current->write.secret);
     ngx_quic_hkdf_set(&seq[4], "tls13 quic key",
-                      &server_key, &next->server.secret);
+                      &write_key, &next->write.secret);
     ngx_quic_hkdf_set(&seq[5], "tls13 quic iv",
-                      &next->server.iv, &next->server.secret);
+                      &next->write.iv, &next->write.secret);
 
     for (i = 0; i < (sizeof(seq) / sizeof(seq[0])); i++) {
         if (ngx_quic_hkdf_expand(&seq[i], ciphers.d, c->log) != NGX_OK) {
-            goto failed;
+            ngx_quic_set_error(c, NGX_QUIC_ERR_KEY_UPDATE_ERROR, "key error");
+            goto done;
         }
     }
 
-    if (ngx_quic_crypto_init(ciphers.c, &next->client, &client_key, 0, c->log)
+    if (ngx_quic_crypto_init(ciphers.c, &next->read, &read_key, 0, c->log)
         == NGX_ERROR)
     {
-        goto failed;
+        ngx_quic_set_error(c, NGX_QUIC_ERR_KEY_UPDATE_ERROR, "key error");
+        goto done;
     }
 
-    if (ngx_quic_crypto_init(ciphers.c, &next->server, &server_key, 1, c->log)
+    if (ngx_quic_crypto_init(ciphers.c, &next->write, &write_key, 1, c->log)
         == NGX_ERROR)
     {
-        goto failed;
+        ngx_quic_set_error(c, NGX_QUIC_ERR_KEY_UPDATE_ERROR, "key error");
+        goto done;
     }
 
-    ngx_explicit_memzero(current->client.secret.data,
-                         current->client.secret.len);
-    ngx_explicit_memzero(current->server.secret.data,
-                         current->server.secret.len);
+    ngx_explicit_memzero(current->read.secret.data,
+                         current->read.secret.len);
+    ngx_explicit_memzero(current->write.secret.data,
+                         current->write.secret.len);
 
-    current->client.secret.len = 0;
-    current->server.secret.len = 0;
+    current->read.secret.len = 0;
+    current->write.secret.len = 0;
 
-    ngx_explicit_memzero(client_key.data, client_key.len);
-    ngx_explicit_memzero(server_key.data, server_key.len);
+    ngx_explicit_memzero(read_key.data, read_key.len);
+    ngx_explicit_memzero(write_key.data, write_key.len);
 
-    return;
-
-failed:
+done:
 
-    ngx_quic_close_connection(c, NGX_ERROR);
+    ngx_quic_end_handler(c);
 }
 
 
@@ -887,19 +895,19 @@ ngx_quic_keys_cleanup(ngx_quic_keys_t *keys)
 
     next = &keys->next_key;
 
-    ngx_quic_crypto_cleanup(&next->client);
-    ngx_quic_crypto_cleanup(&next->server);
+    ngx_quic_crypto_cleanup(&next->read);
+    ngx_quic_crypto_cleanup(&next->write);
 
-    if (next->client.secret.len) {
-        ngx_explicit_memzero(next->client.secret.data,
-                             next->client.secret.len);
-        next->client.secret.len = 0;
+    if (next->read.secret.len) {
+        ngx_explicit_memzero(next->read.secret.data,
+                             next->read.secret.len);
+        next->read.secret.len = 0;
     }
 
-    if (next->server.secret.len) {
-        ngx_explicit_memzero(next->server.secret.data,
-                             next->server.secret.len);
-        next->server.secret.len = 0;
+    if (next->write.secret.len) {
+        ngx_explicit_memzero(next->write.secret.data,
+                             next->write.secret.len);
+        next->write.secret.len = 0;
     }
 }
 
@@ -924,7 +932,7 @@ ngx_quic_create_packet(ngx_quic_header_t *pkt, ngx_str_t *res)
                    "quic ad len:%uz %xV", ad.len, &ad);
 #endif
 
-    secret = &pkt->keys->secrets[pkt->level].server;
+    secret = &pkt->keys->secrets[pkt->level].write;
 
     ngx_memcpy(nonce, secret->iv.data, secret->iv.len);
     ngx_quic_compute_nonce(nonce, sizeof(nonce), pkt->number);
@@ -1137,7 +1145,7 @@ ngx_quic_decrypt(ngx_quic_header_t *pkt, uint64_t *largest_pn)
     ngx_quic_secret_t  *secret;
     uint8_t             nonce[NGX_QUIC_IV_LEN], mask[NGX_QUIC_HP_LEN];
 
-    secret = &pkt->keys->secrets[pkt->level].client;
+    secret = &pkt->keys->secrets[pkt->level].read;
 
     p = pkt->raw->pos;
     len = pkt->data + pkt->len - p;
@@ -1169,8 +1177,8 @@ ngx_quic_decrypt(ngx_quic_header_t *pkt, uint64_t *largest_pn)
         key_phase = (pkt->flags & NGX_QUIC_PKT_KPHASE) != 0;
 
         if (key_phase != pkt->key_phase) {
-            if (pkt->keys->next_key.client.ctx != NULL) {
-                secret = &pkt->keys->next_key.client;
+            if (pkt->keys->next_key.read.ctx != NULL) {
+                secret = &pkt->keys->next_key.read;
                 pkt->key_update = 1;
 
             } else {
diff --git a/src/event/quic/ngx_event_quic_protection.h b/src/event/quic/ngx_event_quic_protection.h
index 7c5cf3153..f5f8cf1de 100644
--- a/src/event/quic/ngx_event_quic_protection.h
+++ b/src/event/quic/ngx_event_quic_protection.h
@@ -55,8 +55,8 @@ typedef struct {
 
 
 typedef struct {
-    ngx_quic_secret_t         client;
-    ngx_quic_secret_t         server;
+    ngx_quic_secret_t         read;
+    ngx_quic_secret_t         write;
 } ngx_quic_secrets_t;
 
 
@@ -92,7 +92,7 @@ typedef struct {
 
 
 ngx_int_t ngx_quic_keys_set_initial_secret(ngx_quic_keys_t *keys,
-    ngx_str_t *secret, ngx_log_t *log);
+    ngx_str_t *secret, ngx_uint_t is_server, ngx_log_t *log);
 ngx_int_t ngx_quic_keys_set_encryption_secret(ngx_log_t *log,
     ngx_uint_t is_write, ngx_quic_keys_t *keys, ngx_uint_t level,
     const SSL_CIPHER *cipher, const uint8_t *secret, size_t secret_len);
diff --git a/src/event/quic/ngx_event_quic_socket.c b/src/event/quic/ngx_event_quic_socket.c
index c2bc822a5..b08ba47e4 100644
--- a/src/event/quic/ngx_event_quic_socket.c
+++ b/src/event/quic/ngx_event_quic_socket.c
@@ -12,8 +12,10 @@
 
 ngx_int_t
 ngx_quic_open_sockets(ngx_connection_t *c, ngx_quic_connection_t *qc,
-    ngx_quic_header_t *pkt)
+    ngx_str_t *scid, ngx_str_t *dcid)
 {
+    u_char                *p;
+    ngx_str_t              sid;
     ngx_quic_socket_t     *qsock, *tmp;
     ngx_quic_client_id_t  *cid;
 
@@ -35,44 +37,45 @@ ngx_quic_open_sockets(ngx_connection_t *c, ngx_quic_connection_t *qc,
     ngx_queue_init(&qc->client_ids);
     ngx_queue_init(&qc->free_client_ids);
 
-    qc->tp.original_dcid.len = pkt->odcid.len;
-    qc->tp.original_dcid.data = ngx_pstrdup(c->pool, &pkt->odcid);
-    if (qc->tp.original_dcid.data == NULL) {
-        return NGX_ERROR;
-    }
-
-    /* socket to use for further processing (id auto-generated) */
     qsock = ngx_quic_create_socket(c, qc);
     if (qsock == NULL) {
         return NGX_ERROR;
     }
 
-    /* socket is listening at new server id */
     if (ngx_quic_listen(c, qc, qsock) != NGX_OK) {
         return NGX_ERROR;
     }
 
     qsock->used = 1;
 
-    qc->tp.initial_scid.len = qsock->sid.len;
-    qc->tp.initial_scid.data = ngx_pnalloc(c->pool, qsock->sid.len);
-    if (qc->tp.initial_scid.data == NULL) {
+    ngx_memcpy(&qsock->sockaddr, c->sockaddr, c->socklen);
+    qsock->socklen = c->socklen;
+
+    c->udp = &qsock->udp;
+
+    sid.data = qsock->sid.id;
+    sid.len = qsock->sid.len;
+
+    if (ngx_quic_new_sr_token(c, &sid, qc->conf->sr_token_key, qc->tp.sr_token)
+        != NGX_OK)
+    {
         goto failed;
     }
-    ngx_memcpy(qc->tp.initial_scid.data, qsock->sid.id, qsock->sid.len);
 
-    /* for all packets except first, this is set at udp layer */
-    c->udp = &qsock->udp;
+    p = ngx_pnalloc(c->pool, qsock->sid.len);
+    if (p == NULL) {
+        goto failed;
+    }
 
-    /* ngx_quic_get_connection(c) macro is now usable */
+    ngx_memcpy(p, qsock->sid.id, qsock->sid.len);
+    qc->tp.initial_scid.data = p;
+    qc->tp.initial_scid.len = qsock->sid.len;
 
-    /* we have a client identified by scid */
-    cid = ngx_quic_create_client_id(c, &pkt->scid, 0, NULL);
+    cid = ngx_quic_create_client_id(c, scid, 0, NULL);
     if (cid == NULL) {
         goto failed;
     }
 
-    /* path of the first packet is our initial active path */
     qc->path = ngx_quic_new_path(c, c->sockaddr, c->socklen, cid);
     if (qc->path == NULL) {
         goto failed;
@@ -80,31 +83,32 @@ ngx_quic_open_sockets(ngx_connection_t *c, ngx_quic_connection_t *qc,
 
     qc->path->tag = NGX_QUIC_PATH_ACTIVE;
 
-    if (pkt->validated) {
-        qc->path->validated = 1;
-    }
-
     ngx_quic_path_dbg(c, "set active", qc->path);
 
-    tmp = ngx_pcalloc(c->pool, sizeof(ngx_quic_socket_t));
-    if (tmp == NULL) {
-        goto failed;
-    }
+    if (dcid) {
+        tmp = ngx_pcalloc(c->pool, sizeof(ngx_quic_socket_t));
+        if (tmp == NULL) {
+            goto failed;
+        }
 
-    tmp->sid.seqnum = NGX_QUIC_UNSET_PN; /* temporary socket */
+        tmp->sid.seqnum = NGX_QUIC_UNSET_PN; /* temporary socket */
 
-    ngx_memcpy(tmp->sid.id, pkt->dcid.data, pkt->dcid.len);
-    tmp->sid.len = pkt->dcid.len;
+        ngx_memcpy(tmp->sid.id, dcid->data, dcid->len);
+        tmp->sid.len = dcid->len;
 
-    if (ngx_quic_listen(c, qc, tmp) != NGX_OK) {
-        goto failed;
+        if (ngx_quic_listen(c, qc, tmp) != NGX_OK) {
+            goto failed;
+        }
     }
 
     return NGX_OK;
 
 failed:
 
-    ngx_rbtree_delete(&c->listening->rbtree, &qsock->udp.node);
+    if (c->listening) {
+        ngx_rbtree_delete(&c->listening->rbtree, &qsock->udp.node);
+    }
+
     c->udp = NULL;
 
     return NGX_ERROR;
@@ -155,7 +159,10 @@ ngx_quic_close_socket(ngx_connection_t *c, ngx_quic_socket_t *qsock)
     ngx_queue_remove(&qsock->queue);
     ngx_queue_insert_head(&qc->free_sockets, &qsock->queue);
 
-    ngx_rbtree_delete(&c->listening->rbtree, &qsock->udp.node);
+    if (c->listening) {
+        ngx_rbtree_delete(&c->listening->rbtree, &qsock->udp.node);
+    }
+
     qc->nsockets--;
 
     ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
@@ -179,17 +186,20 @@ ngx_quic_listen(ngx_connection_t *c, ngx_quic_connection_t *qc,
     qsock->udp.connection = c;
     qsock->udp.node.key = ngx_crc32_long(id.data, id.len);
     qsock->udp.key = id;
+    qsock->quic = qc;
 
-    ngx_rbtree_insert(&c->listening->rbtree, &qsock->udp.node);
+    if (c->listening) {
+        ngx_rbtree_insert(&c->listening->rbtree, &qsock->udp.node);
+    }
 
     ngx_queue_insert_tail(&qc->sockets, &qsock->queue);
 
     qc->nsockets++;
-    qsock->quic = qc;
 
-    ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                   "quic socket seq:%L listening at sid:%xV nsock:%ui",
-                   (int64_t) sid->seqnum, &id, qc->nsockets);
+    ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "quic socket seq:%L listening at sid:%*xs nsock:%ui",
+                   (int64_t) qsock->sid.seqnum, qsock->sid.len, qsock->sid.id,
+                   qc->nsockets);
 
     return NGX_OK;
 }
diff --git a/src/event/quic/ngx_event_quic_socket.h b/src/event/quic/ngx_event_quic_socket.h
index 68ecc063d..1afd170aa 100644
--- a/src/event/quic/ngx_event_quic_socket.h
+++ b/src/event/quic/ngx_event_quic_socket.h
@@ -13,7 +13,7 @@
 
 
 ngx_int_t ngx_quic_open_sockets(ngx_connection_t *c,
-    ngx_quic_connection_t *qc, ngx_quic_header_t *pkt);
+    ngx_quic_connection_t *qc, ngx_str_t *scid, ngx_str_t *dcid);
 void ngx_quic_close_sockets(ngx_connection_t *c);
 
 ngx_quic_socket_t *ngx_quic_create_socket(ngx_connection_t *c,
diff --git a/src/event/quic/ngx_event_quic_ssl.c b/src/event/quic/ngx_event_quic_ssl.c
index 18992ae1b..880a90637 100644
--- a/src/event/quic/ngx_event_quic_ssl.c
+++ b/src/event/quic/ngx_event_quic_ssl.c
@@ -59,7 +59,6 @@ static int ngx_quic_send_alert(ngx_ssl_conn_t *ssl_conn,
 
 #endif
 
-static ngx_int_t ngx_quic_handshake(ngx_connection_t *c);
 static ngx_int_t ngx_quic_crypto_provide(ngx_connection_t *c, ngx_uint_t level);
 
 
@@ -85,18 +84,20 @@ ngx_quic_cbs_send(ngx_ssl_conn_t *ssl_conn,
 
     *consumed = 0;
 
-    SSL_get0_alpn_selected(ssl_conn, &alpn_data, &alpn_len);
+    if (qc->is_server) {
+        SSL_get0_alpn_selected(ssl_conn, &alpn_data, &alpn_len);
 
-    if (alpn_len == 0) {
-        qc->error = NGX_QUIC_ERR_CRYPTO(SSL_AD_NO_APPLICATION_PROTOCOL);
-        qc->error_reason = "missing ALPN extension";
+        if (alpn_len == 0) {
+            qc->error = NGX_QUIC_ERR_CRYPTO(SSL_AD_NO_APPLICATION_PROTOCOL);
+            qc->error_reason = "missing ALPN extension";
 
-        ngx_log_error(NGX_LOG_INFO, c->log, 0,
-                      "quic missing ALPN extension");
-        return 1;
+            ngx_log_error(NGX_LOG_INFO, c->log, 0,
+                          "quic missing ALPN extension");
+            return 1;
+        }
     }
 
-    if (!qc->client_tp_done) {
+    if (!qc->peer_tp_done) {
         /* RFC 9001, 8.2.  QUIC Transport Parameters Extension */
         qc->error = NGX_QUIC_ERR_CRYPTO(SSL_AD_MISSING_EXTENSION);
         qc->error_reason = "missing transport parameters";
@@ -295,7 +296,7 @@ ngx_quic_cbs_got_transport_params(ngx_ssl_conn_t *ssl_conn,
         return 1;
     }
 
-    qc->client_tp_done = 1;
+    qc->peer_tp_done = 1;
 
     return 1;
 }
@@ -491,68 +492,75 @@ ngx_quic_add_handshake_data(ngx_ssl_conn_t *ssl_conn,
     ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
                    "quic ngx_quic_add_handshake_data");
 
-    if (!qc->client_tp_done) {
-        /*
-         * things to do once during handshake: check ALPN and transport
-         * parameters; we want to break handshake if something is wrong
-         * here;
-         */
+    if (!qc->peer_tp_done) {
 
-        SSL_get0_alpn_selected(ssl_conn, &alpn_data, &alpn_len);
+        if (qc->is_server) {
+            /*
+             * things to do once during handshake: check ALPN and transport
+             * parameters; we want to break handshake if something is wrong
+             * here;
+             */
 
-        if (alpn_len == 0) {
-            if (qc->error == 0) {
-                qc->error = NGX_QUIC_ERR_CRYPTO(SSL_AD_NO_APPLICATION_PROTOCOL);
-                qc->error_reason = "missing ALPN extension";
+            SSL_get0_alpn_selected(ssl_conn, &alpn_data, &alpn_len);
 
-                ngx_log_error(NGX_LOG_INFO, c->log, 0,
-                              "quic missing ALPN extension");
-            }
+            if (alpn_len == 0) {
+                if (qc->error == 0) {
+                    qc->error =
+                           NGX_QUIC_ERR_CRYPTO(SSL_AD_NO_APPLICATION_PROTOCOL);
+                    qc->error_reason = "missing ALPN extension";
 
-            return 1;
+                    ngx_log_error(NGX_LOG_INFO, c->log, 0,
+                                  "quic missing ALPN extension");
+                }
+
+                return 1;
+            }
         }
 
-        SSL_get_peer_quic_transport_params(ssl_conn, &client_params,
-                                           &client_params_len);
+        if (qc->received > 0) {
+            SSL_get_peer_quic_transport_params(ssl_conn, &client_params,
+                                               &client_params_len);
+
+            ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                           "quic SSL_get_peer_quic_transport_params():"
+                           " params_len:%ui", client_params_len);
 
-        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                       "quic SSL_get_peer_quic_transport_params():"
-                       " params_len:%ui", client_params_len);
+            if (client_params_len == 0) {
+                /* RFC 9001, 8.2.  QUIC Transport Parameters Extension */
 
-        if (client_params_len == 0) {
-            /* RFC 9001, 8.2.  QUIC Transport Parameters Extension */
+                if (qc->error == 0) {
+                    qc->error = NGX_QUIC_ERR_CRYPTO(SSL_AD_MISSING_EXTENSION);
+                    qc->error_reason = "missing transport parameters";
 
-            if (qc->error == 0) {
-                qc->error = NGX_QUIC_ERR_CRYPTO(SSL_AD_MISSING_EXTENSION);
-                qc->error_reason = "missing transport parameters";
+                    ngx_log_error(NGX_LOG_INFO, c->log, 0,
+                                  "missing transport parameters");
+                }
 
-                ngx_log_error(NGX_LOG_INFO, c->log, 0,
-                              "missing transport parameters");
+                return 1;
             }
 
-            return 1;
-        }
+            p = (u_char *) client_params;
+            end = p + client_params_len;
 
-        p = (u_char *) client_params;
-        end = p + client_params_len;
+            /* defaults for parameters not sent by client */
+            ngx_memcpy(&ctp, &qc->ctp, sizeof(ngx_quic_tp_t));
 
-        /* defaults for parameters not sent by client */
-        ngx_memcpy(&ctp, &qc->ctp, sizeof(ngx_quic_tp_t));
+            if (ngx_quic_parse_transport_params(p, end, &ctp, qc->is_server,
+                                                c->log)
+                != NGX_OK)
+            {
+                qc->error = NGX_QUIC_ERR_TRANSPORT_PARAMETER_ERROR;
+                qc->error_reason = "failed to process transport parameters";
 
-        if (ngx_quic_parse_transport_params(p, end, &ctp, c->log)
-            != NGX_OK)
-        {
-            qc->error = NGX_QUIC_ERR_TRANSPORT_PARAMETER_ERROR;
-            qc->error_reason = "failed to process transport parameters";
+                return 1;
+            }
 
-            return 1;
-        }
+            if (ngx_quic_apply_transport_params(c, &ctp) != NGX_OK) {
+                return 1;
+            }
 
-        if (ngx_quic_apply_transport_params(c, &ctp) != NGX_OK) {
-            return 1;
+            qc->peer_tp_done = 1;
         }
-
-        qc->client_tp_done = 1;
     }
 
     ctx = ngx_quic_get_send_ctx(qc, level);
@@ -681,14 +689,15 @@ ngx_quic_handle_crypto_frame(ngx_connection_t *c, ngx_quic_header_t *pkt,
         return NGX_ERROR;
     }
 
-    return ngx_quic_handshake(c);
+    return ngx_quic_do_handshake(c);
 }
 
 
-static ngx_int_t
-ngx_quic_handshake(ngx_connection_t *c)
+ngx_int_t
+ngx_quic_do_handshake(ngx_connection_t *c)
 {
     int                     n, sslerr;
+    ngx_int_t               rc;
     ngx_ssl_conn_t         *ssl_conn;
     ngx_quic_frame_t       *frame;
     ngx_quic_connection_t  *qc;
@@ -732,11 +741,9 @@ ngx_quic_handshake(ngx_connection_t *c)
 
     if (!SSL_is_init_finished(ssl_conn)) {
         if (ngx_quic_keys_available(qc->keys, NGX_QUIC_ENCRYPTION_EARLY_DATA, 0)
-            && qc->client_tp_done)
+            && qc->peer_tp_done)
         {
-            if (ngx_quic_init_streams(c) != NGX_OK) {
-                return NGX_ERROR;
-            }
+            goto done;
         }
 
         return NGX_OK;
@@ -746,21 +753,37 @@ ngx_quic_handshake(ngx_connection_t *c)
     ngx_ssl_handshake_log(c);
 #endif
 
-    c->ssl->handshaked = 1;
-
-    frame = ngx_quic_alloc_frame(c);
-    if (frame == NULL) {
-        return NGX_ERROR;
+    if (qc->handshaked) {
+        return NGX_OK;
     }
 
-    frame->level = NGX_QUIC_ENCRYPTION_APPLICATION;
-    frame->type = NGX_QUIC_FT_HANDSHAKE_DONE;
-    ngx_quic_queue_frame(qc, frame);
+    qc->handshaked = 1;
 
-    if (qc->conf->retry) {
-        if (ngx_quic_send_new_token(c, qc->path) != NGX_OK) {
+    if (qc->is_server) {
+        frame = ngx_quic_alloc_frame(c);
+        if (frame == NULL) {
             return NGX_ERROR;
         }
+
+        frame->level = NGX_QUIC_ENCRYPTION_APPLICATION;
+        frame->type = NGX_QUIC_FT_HANDSHAKE_DONE;
+        ngx_quic_queue_frame(qc, frame);
+
+        if (qc->conf->retry) {
+            if (ngx_quic_send_new_token(c, qc->path) != NGX_OK) {
+                return NGX_ERROR;
+            }
+        }
+
+        /*
+         * RFC 9001, 4.9.2.  Discarding Handshake Keys
+         *
+         * An endpoint MUST discard its Handshake keys
+         * when the TLS handshake is confirmed.
+         */
+        ngx_quic_discard_ctx(c, NGX_QUIC_ENCRYPTION_HANDSHAKE);
+
+        ngx_quic_discover_path_mtu(c, qc->path);
     }
 
     /*
@@ -771,25 +794,25 @@ ngx_quic_handshake(ngx_connection_t *c)
 
     ngx_post_event(&qc->key_update, &ngx_posted_events);
 
-    /*
-     * RFC 9001, 4.9.2.  Discarding Handshake Keys
-     *
-     * An endpoint MUST discard its Handshake keys
-     * when the TLS handshake is confirmed.
-     */
-    ngx_quic_discard_ctx(c, NGX_QUIC_ENCRYPTION_HANDSHAKE);
-
-    ngx_quic_discover_path_mtu(c, qc->path);
-
     /* start accepting clients on negotiated number of server ids */
     if (ngx_quic_create_sockets(c) != NGX_OK) {
         return NGX_ERROR;
     }
 
-    if (ngx_quic_init_streams(c) != NGX_OK) {
+done:
+
+    rc = ngx_ssl_ocsp_validate(c);
+
+    if (rc == NGX_ERROR) {
         return NGX_ERROR;
     }
 
+    if (rc == NGX_AGAIN) {
+        return NGX_OK;
+    }
+
+    c->ssl->handshaked = 1;
+
     return NGX_OK;
 }
 
@@ -849,7 +872,33 @@ ngx_quic_crypto_provide(ngx_connection_t *c, ngx_uint_t level)
 
 
 ngx_int_t
-ngx_quic_init_connection(ngx_connection_t *c)
+ngx_quic_handle_handshake_done_frame(ngx_connection_t *c)
+{
+    ngx_quic_connection_t  *qc;
+
+    qc = ngx_quic_get_connection(c);
+
+    if (qc->is_server) {
+        return NGX_ERROR;
+    }
+
+    /*
+     * RFC 9001, 4.1.2  Handshake Confirmed.
+     *
+     * At the client, the handshake is considered confirmed
+     * when a HANDSHAKE_DONE frame is received.
+     */
+
+    ngx_quic_discard_ctx(c, NGX_QUIC_ENCRYPTION_HANDSHAKE);
+
+    ngx_quic_discover_path_mtu(c, qc->path);
+
+    return NGX_OK;
+}
+
+
+ngx_int_t
+ngx_quic_init_connection(ngx_connection_t *c, ngx_uint_t flags)
 {
     u_char                 *p;
     size_t                  clen;
@@ -888,12 +937,10 @@ ngx_quic_init_connection(ngx_connection_t *c)
 
     qc = ngx_quic_get_connection(c);
 
-    if (ngx_ssl_create_connection(qc->conf->ssl, c, 0) != NGX_OK) {
+    if (ngx_ssl_create_connection(qc->conf->ssl, c, flags) != NGX_OK) {
         return NGX_ERROR;
     }
 
-    c->ssl->no_wait_shutdown = 1;
-
     ssl_conn = c->ssl->connection;
 
 #if (NGX_QUIC_OPENSSL_API)
@@ -947,7 +994,8 @@ ngx_quic_init_connection(ngx_connection_t *c)
         return NGX_ERROR;
     }
 
-    len = ngx_quic_create_transport_params(NULL, NULL, &qc->tp, &clen);
+    len = ngx_quic_create_transport_params(NULL, NULL, &qc->tp, &clen,
+                                           qc->is_server);
     /* always succeeds */
 
     p = ngx_pnalloc(c->pool, len);
@@ -955,7 +1003,8 @@ ngx_quic_init_connection(ngx_connection_t *c)
         return NGX_ERROR;
     }
 
-    len = ngx_quic_create_transport_params(p, p + len, &qc->tp, NULL);
+    len = ngx_quic_create_transport_params(p, p + len, &qc->tp, NULL,
+                                           qc->is_server);
     if (len < 0) {
         return NGX_ERROR;
     }
diff --git a/src/event/quic/ngx_event_quic_ssl.h b/src/event/quic/ngx_event_quic_ssl.h
index ee0aa07c9..09026f7ef 100644
--- a/src/event/quic/ngx_event_quic_ssl.h
+++ b/src/event/quic/ngx_event_quic_ssl.h
@@ -11,9 +11,11 @@
 #include <ngx_config.h>
 #include <ngx_core.h>
 
-ngx_int_t ngx_quic_init_connection(ngx_connection_t *c);
+ngx_int_t ngx_quic_init_connection(ngx_connection_t *c, ngx_uint_t flags);
+ngx_int_t ngx_quic_do_handshake(ngx_connection_t *c);
 
 ngx_int_t ngx_quic_handle_crypto_frame(ngx_connection_t *c,
     ngx_quic_header_t *pkt, ngx_quic_frame_t *frame);
+ngx_int_t ngx_quic_handle_handshake_done_frame(ngx_connection_t *c);
 
 #endif /* _NGX_EVENT_QUIC_SSL_H_INCLUDED_ */
diff --git a/src/event/quic/ngx_event_quic_streams.c b/src/event/quic/ngx_event_quic_streams.c
index 18fffeabe..da3cdb07f 100644
--- a/src/event/quic/ngx_event_quic_streams.c
+++ b/src/event/quic/ngx_event_quic_streams.c
@@ -13,15 +13,13 @@
 #define NGX_QUIC_STREAM_GONE     (void *) -1
 
 
+static ngx_uint_t ngx_quic_is_stream_local(ngx_connection_t *c, uint64_t id);
 static ngx_int_t ngx_quic_do_reset_stream(ngx_quic_stream_t *qs,
     ngx_uint_t err);
 static ngx_int_t ngx_quic_shutdown_stream_send(ngx_connection_t *c);
 static ngx_int_t ngx_quic_shutdown_stream_recv(ngx_connection_t *c);
 static ngx_quic_stream_t *ngx_quic_get_stream(ngx_connection_t *c, uint64_t id);
 static ngx_int_t ngx_quic_reject_stream(ngx_connection_t *c, uint64_t id);
-static void ngx_quic_init_stream_handler(ngx_event_t *ev);
-static void ngx_quic_init_streams_handler(ngx_connection_t *c);
-static ngx_int_t ngx_quic_do_init_streams(ngx_connection_t *c);
 static ngx_quic_stream_t *ngx_quic_create_stream(ngx_connection_t *c,
     uint64_t id);
 static void ngx_quic_empty_handler(ngx_event_t *ev);
@@ -29,12 +27,13 @@ static ssize_t ngx_quic_stream_recv(ngx_connection_t *c, u_char *buf,
     size_t size);
 static ssize_t ngx_quic_stream_send(ngx_connection_t *c, u_char *buf,
     size_t size);
+static ssize_t ngx_quic_stream_recv_chain(ngx_connection_t *c,
+    ngx_chain_t *in, off_t limit);
 static ngx_chain_t *ngx_quic_stream_send_chain(ngx_connection_t *c,
     ngx_chain_t *in, off_t limit);
 static ngx_int_t ngx_quic_stream_flush(ngx_quic_stream_t *qs);
 static void ngx_quic_stream_cleanup_handler(void *data);
 static ngx_int_t ngx_quic_close_stream(ngx_quic_stream_t *qs);
-static ngx_int_t ngx_quic_can_shutdown(ngx_connection_t *c);
 static ngx_int_t ngx_quic_control_flow(ngx_quic_stream_t *qs, uint64_t last);
 static ngx_int_t ngx_quic_update_flow(ngx_quic_stream_t *qs, uint64_t last);
 static ngx_int_t ngx_quic_update_max_stream_data(ngx_quic_stream_t *qs);
@@ -42,6 +41,66 @@ static ngx_int_t ngx_quic_update_max_data(ngx_connection_t *c);
 static void ngx_quic_set_event(ngx_event_t *ev);
 
 
+static ngx_uint_t
+ngx_quic_is_stream_local(ngx_connection_t *c, uint64_t id)
+{
+    ngx_quic_connection_t  *qc;
+
+    qc = ngx_quic_get_connection(c);
+
+    if (qc->is_server) {
+        return (id & NGX_QUIC_STREAM_SERVER_INITIATED) ? 1 : 0;
+
+    } else {
+        return (id & NGX_QUIC_STREAM_SERVER_INITIATED) ? 0 : 1;
+    }
+}
+
+
+ngx_int_t
+ngx_quic_has_streams(ngx_connection_t *c, ngx_uint_t local, ngx_uint_t bidi)
+{
+    uint64_t                type;
+    ngx_rbtree_t           *tree;
+    ngx_rbtree_node_t      *node;
+    ngx_quic_stream_t      *qs;
+    ngx_quic_connection_t  *qc;
+
+    qc = ngx_quic_get_connection(c);
+
+    /* TODO optimize */
+
+    type = 0;
+
+    if ((qc->is_server && local) || (!qc->is_server && !local)) {
+        type |= NGX_QUIC_STREAM_SERVER_INITIATED;
+    }
+
+    if (!bidi) {
+        type |= NGX_QUIC_STREAM_UNIDIRECTIONAL;
+    }
+
+    tree = &qc->streams.tree;
+
+    if (tree->root == tree->sentinel) {
+        return NGX_DECLINED;
+    }
+
+    node = ngx_rbtree_min(tree->root, tree->sentinel);
+
+    while (node) {
+        qs = (ngx_quic_stream_t *) node;
+        node = ngx_rbtree_next(tree, node);
+
+        if ((qs->id & 0x03) == type) {
+            return NGX_OK;
+        }
+    }
+
+    return NGX_DECLINED;
+}
+
+
 ngx_connection_t *
 ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi)
 {
@@ -50,7 +109,7 @@ ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi)
     ngx_quic_stream_t      *qs;
     ngx_quic_connection_t  *qc;
 
-    pc = c->quic ? c->quic->parent : c;
+    pc = c->quic->stream ? c->quic->stream->parent : c;
     qc = ngx_quic_get_connection(pc);
 
     if (qc->closing) {
@@ -58,47 +117,53 @@ ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi)
     }
 
     if (bidi) {
-        if (qc->streams.server_streams_bidi
-            >= qc->streams.server_max_streams_bidi)
+        if (qc->streams.local_streams_bidi
+            >= qc->streams.local_max_streams_bidi)
         {
             ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                           "quic too many server bidi streams:%uL",
-                           qc->streams.server_streams_bidi);
+                           "quic too many local bidi streams:%uL",
+                           qc->streams.local_streams_bidi);
             return NULL;
         }
 
-        id = (qc->streams.server_streams_bidi << 2)
-             | NGX_QUIC_STREAM_SERVER_INITIATED;
+        id = (qc->streams.local_streams_bidi << 2);
+
+        if (qc->is_server) {
+            id |= NGX_QUIC_STREAM_SERVER_INITIATED;
+        }
 
         ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                       "quic creating server bidi stream"
+                       "quic creating local bidi stream"
                        " streams:%uL max:%uL id:0x%xL",
-                       qc->streams.server_streams_bidi,
-                       qc->streams.server_max_streams_bidi, id);
+                       qc->streams.local_streams_bidi,
+                       qc->streams.local_max_streams_bidi, id);
 
-        qc->streams.server_streams_bidi++;
+        qc->streams.local_streams_bidi++;
 
     } else {
-        if (qc->streams.server_streams_uni
-            >= qc->streams.server_max_streams_uni)
+        if (qc->streams.local_streams_uni
+            >= qc->streams.local_max_streams_uni)
         {
             ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                           "quic too many server uni streams:%uL",
-                           qc->streams.server_streams_uni);
+                           "quic too many local uni streams:%uL",
+                           qc->streams.local_streams_uni);
             return NULL;
         }
 
-        id = (qc->streams.server_streams_uni << 2)
-             | NGX_QUIC_STREAM_SERVER_INITIATED
+        id = (qc->streams.local_streams_uni << 2)
              | NGX_QUIC_STREAM_UNIDIRECTIONAL;
 
+        if (qc->is_server) {
+            id |= NGX_QUIC_STREAM_SERVER_INITIATED;
+        }
+
         ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                       "quic creating server uni stream"
+                       "quic creating local uni stream"
                        " streams:%uL max:%uL id:0x%xL",
-                       qc->streams.server_streams_uni,
-                       qc->streams.server_max_streams_uni, id);
+                       qc->streams.local_streams_uni,
+                       qc->streams.local_max_streams_uni, id);
 
-        qc->streams.server_streams_uni++;
+        qc->streams.local_streams_uni++;
     }
 
     qs = ngx_quic_create_stream(pc, id);
@@ -169,16 +234,51 @@ ngx_quic_find_stream(ngx_rbtree_t *rbtree, uint64_t id)
     return NULL;
 }
 
+ngx_int_t
+ngx_quic_linger_streams(ngx_connection_t *c)
+{
+    ngx_rbtree_t           *tree;
+    ngx_rbtree_node_t      *node;
+    ngx_quic_stream_t      *qs;
+    ngx_quic_connection_t  *qc;
+
+    qc = ngx_quic_get_connection(c);
+    tree = &qc->streams.tree;
+
+    if (tree->root == tree->sentinel) {
+        return NGX_OK;
+    }
+
+    for (node = ngx_rbtree_min(tree->root, tree->sentinel);
+         node;
+         node = ngx_rbtree_next(tree, node))
+    {
+        qs = (ngx_quic_stream_t *) node;
+
+        if (qs->sent != qs->acked) {
+            ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                           "quic stream id:0x%xL lingering unacked:%uL",
+                           qs->id, qs->sent - qs->acked);
+            return NGX_AGAIN;
+        }
+    }
+
+    return NGX_OK;
+}
+
 
 ngx_int_t
-ngx_quic_close_streams(ngx_connection_t *c, ngx_quic_connection_t *qc)
+ngx_quic_close_streams(ngx_connection_t *c)
 {
-    ngx_pool_t         *pool;
-    ngx_queue_t        *q, posted_events;
-    ngx_rbtree_t       *tree;
-    ngx_connection_t   *sc;
-    ngx_rbtree_node_t  *node;
-    ngx_quic_stream_t  *qs;
+    ngx_pool_t             *pool;
+    ngx_queue_t            *q, posted_events;
+    ngx_rbtree_t           *tree;
+    ngx_connection_t       *sc;
+    ngx_rbtree_node_t      *node;
+    ngx_quic_stream_t      *qs;
+    ngx_quic_connection_t  *qc;
+
+    qc = ngx_quic_get_connection(c);
 
     while (!ngx_queue_empty(&qc->streams.uninitialized)) {
         q = ngx_queue_head(&qc->streams.uninitialized);
@@ -244,7 +344,7 @@ ngx_quic_close_streams(ngx_connection_t *c, ngx_quic_connection_t *qc)
 ngx_int_t
 ngx_quic_reset_stream(ngx_connection_t *c, ngx_uint_t err)
 {
-    return ngx_quic_do_reset_stream(c->quic, err);
+    return ngx_quic_do_reset_stream(c->quic->stream, err);
 }
 
 
@@ -318,7 +418,7 @@ ngx_quic_shutdown_stream_send(ngx_connection_t *c)
 {
     ngx_quic_stream_t  *qs;
 
-    qs = c->quic;
+    qs = c->quic->stream;
 
     if (qs->send_state != NGX_QUIC_STREAM_SEND_READY
         && qs->send_state != NGX_QUIC_STREAM_SEND_SEND)
@@ -344,7 +444,7 @@ ngx_quic_shutdown_stream_recv(ngx_connection_t *c)
     ngx_quic_stream_t      *qs;
     ngx_quic_connection_t  *qc;
 
-    qs = c->quic;
+    qs = c->quic->stream;
 
     if (qs->recv_state != NGX_QUIC_STREAM_RECV_RECV
         && qs->recv_state != NGX_QUIC_STREAM_RECV_SIZE_KNOWN)
@@ -382,7 +482,6 @@ static ngx_quic_stream_t *
 ngx_quic_get_stream(ngx_connection_t *c, uint64_t id)
 {
     uint64_t                min_id;
-    ngx_event_t            *rev;
     ngx_quic_stream_t      *qs;
     ngx_quic_connection_t  *qc;
 
@@ -403,8 +502,8 @@ ngx_quic_get_stream(ngx_connection_t *c, uint64_t id)
 
     if (id & NGX_QUIC_STREAM_UNIDIRECTIONAL) {
 
-        if (id & NGX_QUIC_STREAM_SERVER_INITIATED) {
-            if ((id >> 2) < qc->streams.server_streams_uni) {
+        if (ngx_quic_is_stream_local(c, id)) {
+            if ((id >> 2) < qc->streams.local_streams_uni) {
                 return NGX_QUIC_STREAM_GONE;
             }
 
@@ -412,23 +511,28 @@ ngx_quic_get_stream(ngx_connection_t *c, uint64_t id)
             return NULL;
         }
 
-        if ((id >> 2) < qc->streams.client_streams_uni) {
+        if ((id >> 2) < qc->streams.remote_streams_uni) {
             return NGX_QUIC_STREAM_GONE;
         }
 
-        if ((id >> 2) >= qc->streams.client_max_streams_uni) {
+        if ((id >> 2) >= qc->streams.remote_max_streams_uni) {
             qc->error = NGX_QUIC_ERR_STREAM_LIMIT_ERROR;
             return NULL;
         }
 
-        min_id = (qc->streams.client_streams_uni << 2)
+        min_id = (qc->streams.remote_streams_uni << 2)
                  | NGX_QUIC_STREAM_UNIDIRECTIONAL;
-        qc->streams.client_streams_uni = (id >> 2) + 1;
+
+        if (!qc->is_server) {
+            min_id |= NGX_QUIC_STREAM_SERVER_INITIATED;
+        }
+
+        qc->streams.remote_streams_uni = (id >> 2) + 1;
 
     } else {
 
-        if (id & NGX_QUIC_STREAM_SERVER_INITIATED) {
-            if ((id >> 2) < qc->streams.server_streams_bidi) {
+        if (ngx_quic_is_stream_local(c, id)) {
+            if ((id >> 2) < qc->streams.local_streams_bidi) {
                 return NGX_QUIC_STREAM_GONE;
             }
 
@@ -436,17 +540,22 @@ ngx_quic_get_stream(ngx_connection_t *c, uint64_t id)
             return NULL;
         }
 
-        if ((id >> 2) < qc->streams.client_streams_bidi) {
+        if ((id >> 2) < qc->streams.remote_streams_bidi) {
             return NGX_QUIC_STREAM_GONE;
         }
 
-        if ((id >> 2) >= qc->streams.client_max_streams_bidi) {
+        if ((id >> 2) >= qc->streams.remote_max_streams_bidi) {
             qc->error = NGX_QUIC_ERR_STREAM_LIMIT_ERROR;
             return NULL;
         }
 
-        min_id = (qc->streams.client_streams_bidi << 2);
-        qc->streams.client_streams_bidi = (id >> 2) + 1;
+        min_id = (qc->streams.remote_streams_bidi << 2);
+
+        if (!qc->is_server) {
+            min_id |= NGX_QUIC_STREAM_SERVER_INITIATED;
+        }
+
+        qc->streams.remote_streams_bidi = (id >> 2) + 1;
     }
 
     /*
@@ -474,24 +583,6 @@ ngx_quic_get_stream(ngx_connection_t *c, uint64_t id)
         }
 
         ngx_queue_insert_tail(&qc->streams.uninitialized, &qs->queue);
-
-        rev = qs->connection->read;
-        rev->handler = ngx_quic_init_stream_handler;
-
-        if (qc->streams.initialized) {
-            ngx_post_event(rev, &ngx_posted_events);
-
-            if (qc->push.posted) {
-                /*
-                 * The posted stream can produce output immediately.
-                 * By postponing the push event, we coalesce the stream
-                 * output with queued frames in one UDP datagram.
-                 */
-
-                ngx_delete_posted_event(&qc->push);
-                ngx_post_event(&qc->push, &ngx_posted_events);
-            }
-        }
     }
 
     if (qs == NULL) {
@@ -551,98 +642,39 @@ ngx_quic_reject_stream(ngx_connection_t *c, uint64_t id)
 }
 
 
-static void
-ngx_quic_init_stream_handler(ngx_event_t *ev)
-{
-    ngx_connection_t   *c;
-    ngx_quic_stream_t  *qs;
-
-    c = ev->data;
-    qs = c->quic;
-
-    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic init stream");
-
-    if ((qs->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) == 0) {
-        c->write->active = 1;
-        c->write->ready = 1;
-    }
-
-    c->read->active = 1;
-
-    ngx_queue_remove(&qs->queue);
-
-    c->listening->handler(c);
-}
-
-
-ngx_int_t
-ngx_quic_init_streams(ngx_connection_t *c)
+ngx_connection_t *
+ngx_quic_accept_stream(ngx_connection_t *c)
 {
-    ngx_int_t               rc;
+    ngx_queue_t            *q;
+    ngx_connection_t       *sc;
+    ngx_quic_stream_t      *qs;
     ngx_quic_connection_t  *qc;
 
     qc = ngx_quic_get_connection(c);
 
-    if (qc->streams.initialized) {
-        return NGX_OK;
-    }
-
-    rc = ngx_ssl_ocsp_validate(c);
-
-    if (rc == NGX_ERROR) {
-        return NGX_ERROR;
-    }
-
-    if (rc == NGX_AGAIN) {
-        c->ssl->handler = ngx_quic_init_streams_handler;
-        return NGX_OK;
-    }
-
-    return ngx_quic_do_init_streams(c);
-}
-
-
-static void
-ngx_quic_init_streams_handler(ngx_connection_t *c)
-{
-    if (ngx_quic_do_init_streams(c) != NGX_OK) {
-        ngx_quic_close_connection(c, NGX_ERROR);
+    if (ngx_queue_empty(&qc->streams.uninitialized)) {
+        return NULL;
     }
-}
-
 
-static ngx_int_t
-ngx_quic_do_init_streams(ngx_connection_t *c)
-{
-    ngx_queue_t            *q;
-    ngx_quic_stream_t      *qs;
-    ngx_quic_connection_t  *qc;
+    q = ngx_queue_head(&qc->streams.uninitialized);
+    qs = ngx_queue_data(q, ngx_quic_stream_t, queue);
 
-    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic init streams");
+    ngx_queue_remove(&qs->queue);
 
-    qc = ngx_quic_get_connection(c);
+    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "quic accept stream id:%uL", qs->id);
 
-    if (qc->conf->init) {
-        if (qc->conf->init(c) != NGX_OK) {
-            return NGX_ERROR;
-        }
-    }
+    sc = qs->connection;
 
-    for (q = ngx_queue_head(&qc->streams.uninitialized);
-         q != ngx_queue_sentinel(&qc->streams.uninitialized);
-         q = ngx_queue_next(q))
-    {
-        qs = ngx_queue_data(q, ngx_quic_stream_t, queue);
-        ngx_post_event(qs->connection->read, &ngx_posted_events);
+    if ((qs->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) == 0) {
+        sc->write->active = 1;
+        sc->write->ready = 1;
     }
 
-    qc->streams.initialized = 1;
+    sc->read->active = 1;
+    sc->read->ready = 1;
 
-    if (!qc->closing && qc->close.timer_set) {
-        ngx_del_timer(&qc->close);
-    }
-
-    return NGX_OK;
+    return sc;
 }
 
 
@@ -653,6 +685,7 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
     ngx_log_t              *log;
     ngx_pool_t             *pool;
     ngx_uint_t              reusable;
+    ngx_quic_t             *quic;
     ngx_queue_t            *q;
     struct sockaddr        *sockaddr;
     ngx_connection_t       *sc;
@@ -706,6 +739,16 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
     *log = *c->log;
     pool->log = log;
 
+    quic = ngx_palloc(pool, sizeof(ngx_quic_t));
+    if (quic == NULL) {
+        ngx_destroy_pool(pool);
+        ngx_queue_insert_tail(&qc->streams.free, &qs->queue);
+        return NULL;
+    }
+
+    quic->connection = qc;
+    quic->stream = qs;
+
     sockaddr = ngx_palloc(pool, c->socklen);
     if (sockaddr == NULL) {
         ngx_destroy_pool(pool);
@@ -742,9 +785,11 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
         return NULL;
     }
 
+    ngx_reusable_connection(c, reusable);
+
     qs->connection = sc;
 
-    sc->quic = qs;
+    sc->quic = quic;
     sc->shared = 1;
     sc->type = SOCK_STREAM;
     sc->pool = pool;
@@ -761,6 +806,7 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
 
     sc->recv = ngx_quic_stream_recv;
     sc->send = ngx_quic_stream_send;
+    sc->recv_chain = ngx_quic_stream_recv_chain;
     sc->send_chain = ngx_quic_stream_send_chain;
 
     sc->read->log = log;
@@ -772,7 +818,7 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
     log->connection = sc->number;
 
     if (id & NGX_QUIC_STREAM_UNIDIRECTIONAL) {
-        if (id & NGX_QUIC_STREAM_SERVER_INITIATED) {
+        if (ngx_quic_is_stream_local(c, id)) {
             qs->send_max_data = qc->ctp.initial_max_stream_data_uni;
             qs->recv_state = NGX_QUIC_STREAM_RECV_DATA_READ;
             qs->send_state = NGX_QUIC_STREAM_SEND_READY;
@@ -784,7 +830,7 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
         }
 
     } else {
-        if (id & NGX_QUIC_STREAM_SERVER_INITIATED) {
+        if (ngx_quic_is_stream_local(c, id)) {
             qs->send_max_data = qc->ctp.initial_max_stream_data_bidi_remote;
             qs->recv_max_data = qc->tp.initial_max_stream_data_bidi_local;
 
@@ -804,7 +850,6 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
         ngx_close_connection(sc);
         ngx_destroy_pool(pool);
         ngx_queue_insert_tail(&qc->streams.free, &qs->queue);
-        ngx_reusable_connection(c, reusable);
         return NULL;
     }
 
@@ -817,31 +862,6 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
 }
 
 
-void
-ngx_quic_cancelable_stream(ngx_connection_t *c)
-{
-    ngx_connection_t       *pc;
-    ngx_quic_stream_t      *qs;
-    ngx_quic_connection_t  *qc;
-
-    qs = c->quic;
-    pc = qs->parent;
-    qc = ngx_quic_get_connection(pc);
-
-    if (!qs->cancelable) {
-        qs->cancelable = 1;
-
-        if (ngx_quic_can_shutdown(pc) == NGX_OK) {
-            ngx_reusable_connection(pc, 1);
-
-            if (qc->shutdown) {
-                ngx_quic_shutdown_quic(pc);
-            }
-        }
-    }
-}
-
-
 static void
 ngx_quic_empty_handler(ngx_event_t *ev)
 {
@@ -858,7 +878,7 @@ ngx_quic_stream_recv(ngx_connection_t *c, u_char *buf, size_t size)
     ngx_connection_t   *pc;
     ngx_quic_stream_t  *qs;
 
-    qs = c->quic;
+    qs = c->quic->stream;
     pc = qs->parent;
     rev = c->read;
 
@@ -948,6 +968,71 @@ ngx_quic_stream_send(ngx_connection_t *c, u_char *buf, size_t size)
 }
 
 
+static ssize_t
+ngx_quic_stream_recv_chain(ngx_connection_t *c, ngx_chain_t *cl, off_t limit)
+{
+    u_char     *last;
+    ssize_t     n, bytes, size;
+    ngx_buf_t  *b;
+
+    /* TODO optimize */
+
+    bytes = 0;
+
+    b = cl->buf;
+    last = b->last;
+
+    for ( ;; ) {
+        size = b->end - last;
+
+        if (limit) {
+            if (bytes >= limit) {
+                return bytes;
+            }
+
+            if (bytes + size > limit) {
+                size = (ssize_t) (limit - bytes);
+            }
+        }
+
+        n = ngx_quic_stream_recv(c, last, size);
+
+        if (n > 0) {
+            last += n;
+            bytes += n;
+
+            if (!c->read->ready) {
+                return bytes;
+            }
+
+            if (last == b->end) {
+                cl = cl->next;
+
+                if (cl == NULL) {
+                    return bytes;
+                }
+
+                b = cl->buf;
+                last = b->last;
+            }
+
+            continue;
+        }
+
+        if (bytes) {
+
+            if (n == 0 || n == NGX_ERROR) {
+                c->read->ready = 1;
+            }
+
+            return bytes;
+        }
+
+        return n;
+    }
+}
+
+
 static ngx_chain_t *
 ngx_quic_stream_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
 {
@@ -957,7 +1042,7 @@ ngx_quic_stream_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
     ngx_quic_stream_t      *qs;
     ngx_quic_connection_t  *qc;
 
-    qs = c->quic;
+    qs = c->quic->stream;
     pc = qs->parent;
     qc = ngx_quic_get_connection(pc);
     wev = c->write;
@@ -1099,7 +1184,7 @@ ngx_quic_stream_cleanup_handler(void *data)
     ngx_quic_stream_t      *qs;
     ngx_quic_connection_t  *qc;
 
-    qs = c->quic;
+    qs = c->quic->stream;
 
     ngx_log_debug1(NGX_LOG_DEBUG_EVENT, qs->parent->log, 0,
                    "quic stream id:0x%xL cleanup", qs->id);
@@ -1165,16 +1250,7 @@ ngx_quic_close_stream(ngx_quic_stream_t *qs)
         return NGX_OK;
     }
 
-    if (!pc->reusable && ngx_quic_can_shutdown(pc) == NGX_OK) {
-        ngx_reusable_connection(pc, 1);
-    }
-
-    if (qc->shutdown) {
-        ngx_quic_shutdown_quic(pc);
-        return NGX_OK;
-    }
-
-    if ((qs->id & NGX_QUIC_STREAM_SERVER_INITIATED) == 0) {
+    if (!ngx_quic_is_stream_local(pc, qs->id)) {
         frame = ngx_quic_alloc_frame(pc);
         if (frame == NULL) {
             return NGX_ERROR;
@@ -1184,11 +1260,11 @@ ngx_quic_close_stream(ngx_quic_stream_t *qs)
         frame->type = NGX_QUIC_FT_MAX_STREAMS;
 
         if (qs->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) {
-            frame->u.max_streams.limit = ++qc->streams.client_max_streams_uni;
+            frame->u.max_streams.limit = ++qc->streams.remote_max_streams_uni;
             frame->u.max_streams.bidi = 0;
 
         } else {
-            frame->u.max_streams.limit = ++qc->streams.client_max_streams_bidi;
+            frame->u.max_streams.limit = ++qc->streams.remote_max_streams_bidi;
             frame->u.max_streams.bidi = 1;
         }
 
@@ -1199,35 +1275,6 @@ ngx_quic_close_stream(ngx_quic_stream_t *qs)
 }
 
 
-static ngx_int_t
-ngx_quic_can_shutdown(ngx_connection_t *c)
-{
-    ngx_rbtree_t           *tree;
-    ngx_rbtree_node_t      *node;
-    ngx_quic_stream_t      *qs;
-    ngx_quic_connection_t  *qc;
-
-    qc = ngx_quic_get_connection(c);
-
-    tree = &qc->streams.tree;
-
-    if (tree->root != tree->sentinel) {
-        for (node = ngx_rbtree_min(tree->root, tree->sentinel);
-             node;
-             node = ngx_rbtree_next(tree, node))
-        {
-            qs = (ngx_quic_stream_t *) node;
-
-            if (!qs->cancelable) {
-                return NGX_DECLINED;
-            }
-        }
-    }
-
-    return NGX_OK;
-}
-
-
 ngx_int_t
 ngx_quic_handle_stream_frame(ngx_connection_t *c, ngx_quic_header_t *pkt,
     ngx_quic_frame_t *frame)
@@ -1241,7 +1288,7 @@ ngx_quic_handle_stream_frame(ngx_connection_t *c, ngx_quic_header_t *pkt,
     f = &frame->u.stream;
 
     if ((f->stream_id & NGX_QUIC_STREAM_UNIDIRECTIONAL)
-        && (f->stream_id & NGX_QUIC_STREAM_SERVER_INITIATED))
+        && ngx_quic_is_stream_local(c, f->stream_id))
     {
         qc->error = NGX_QUIC_ERR_STREAM_STATE_ERROR;
         return NGX_ERROR;
@@ -1386,7 +1433,7 @@ ngx_quic_handle_stream_data_blocked_frame(ngx_connection_t *c,
     qc = ngx_quic_get_connection(c);
 
     if ((f->id & NGX_QUIC_STREAM_UNIDIRECTIONAL)
-        && (f->id & NGX_QUIC_STREAM_SERVER_INITIATED))
+        && ngx_quic_is_stream_local(c, f->id))
     {
         qc->error = NGX_QUIC_ERR_STREAM_STATE_ERROR;
         return NGX_ERROR;
@@ -1416,7 +1463,7 @@ ngx_quic_handle_max_stream_data_frame(ngx_connection_t *c,
     qc = ngx_quic_get_connection(c);
 
     if ((f->id & NGX_QUIC_STREAM_UNIDIRECTIONAL)
-        && (f->id & NGX_QUIC_STREAM_SERVER_INITIATED) == 0)
+        && !ngx_quic_is_stream_local(c, f->id))
     {
         qc->error = NGX_QUIC_ERR_STREAM_STATE_ERROR;
         return NGX_ERROR;
@@ -1459,7 +1506,7 @@ ngx_quic_handle_reset_stream_frame(ngx_connection_t *c,
     qc = ngx_quic_get_connection(c);
 
     if ((f->id & NGX_QUIC_STREAM_UNIDIRECTIONAL)
-        && (f->id & NGX_QUIC_STREAM_SERVER_INITIATED))
+        && ngx_quic_is_stream_local(c, f->id))
     {
         qc->error = NGX_QUIC_ERR_STREAM_STATE_ERROR;
         return NGX_ERROR;
@@ -1528,7 +1575,7 @@ ngx_quic_handle_stop_sending_frame(ngx_connection_t *c,
     qc = ngx_quic_get_connection(c);
 
     if ((f->id & NGX_QUIC_STREAM_UNIDIRECTIONAL)
-        && (f->id & NGX_QUIC_STREAM_SERVER_INITIATED) == 0)
+        && !ngx_quic_is_stream_local(c, f->id))
     {
         qc->error = NGX_QUIC_ERR_STREAM_STATE_ERROR;
         return NGX_ERROR;
@@ -1567,16 +1614,16 @@ ngx_quic_handle_max_streams_frame(ngx_connection_t *c,
     qc = ngx_quic_get_connection(c);
 
     if (f->bidi) {
-        if (qc->streams.server_max_streams_bidi < f->limit) {
-            qc->streams.server_max_streams_bidi = f->limit;
+        if (qc->streams.local_max_streams_bidi < f->limit) {
+            qc->streams.local_max_streams_bidi = f->limit;
 
             ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
                            "quic max_streams_bidi:%uL", f->limit);
         }
 
     } else {
-        if (qc->streams.server_max_streams_uni < f->limit) {
-            qc->streams.server_max_streams_uni = f->limit;
+        if (qc->streams.local_max_streams_uni < f->limit) {
+            qc->streams.local_max_streams_uni = f->limit;
 
             ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
                            "quic max_streams_uni:%uL", f->limit);
diff --git a/src/event/quic/ngx_event_quic_streams.h b/src/event/quic/ngx_event_quic_streams.h
index fb6dbbd8f..4b837db10 100644
--- a/src/event/quic/ngx_event_quic_streams.h
+++ b/src/event/quic/ngx_event_quic_streams.h
@@ -33,12 +33,11 @@ ngx_int_t ngx_quic_handle_stop_sending_frame(ngx_connection_t *c,
 ngx_int_t ngx_quic_handle_max_streams_frame(ngx_connection_t *c,
     ngx_quic_header_t *pkt, ngx_quic_max_streams_frame_t *f);
 
-ngx_int_t ngx_quic_init_streams(ngx_connection_t *c);
 void ngx_quic_rbtree_insert_stream(ngx_rbtree_node_t *temp,
     ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
 ngx_quic_stream_t *ngx_quic_find_stream(ngx_rbtree_t *rbtree,
     uint64_t id);
-ngx_int_t ngx_quic_close_streams(ngx_connection_t *c,
-    ngx_quic_connection_t *qc);
+ngx_int_t ngx_quic_linger_streams(ngx_connection_t *c);
+ngx_int_t ngx_quic_close_streams(ngx_connection_t *c);
 
 #endif /* _NGX_EVENT_QUIC_STREAMS_H_INCLUDED_ */
diff --git a/src/event/quic/ngx_event_quic_tokens.c b/src/event/quic/ngx_event_quic_tokens.c
index c1da0d472..7edbfae23 100644
--- a/src/event/quic/ngx_event_quic_tokens.c
+++ b/src/event/quic/ngx_event_quic_tokens.c
@@ -307,3 +307,25 @@ bad_token:
 
     return NGX_DECLINED;
 }
+
+
+ngx_int_t
+ngx_quic_handle_new_token_frame(ngx_connection_t *c, ngx_quic_frame_t *frame)
+{
+    ngx_quic_connection_t  *qc;
+
+    qc = ngx_quic_get_connection(c);
+
+    if (qc->is_server) {
+        return NGX_ERROR;
+    }
+
+#ifdef NGX_QUIC_DEBUG_PACKETS
+    ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "quic received token len:%uz %*xs", frame->u.token.length,
+                   frame->data->buf->last - frame->data->buf->pos,
+                   frame->data->buf->pos);
+#endif
+
+    return NGX_OK;
+}
diff --git a/src/event/quic/ngx_event_quic_tokens.h b/src/event/quic/ngx_event_quic_tokens.h
index ee3fe5b9a..428767ef0 100644
--- a/src/event/quic/ngx_event_quic_tokens.h
+++ b/src/event/quic/ngx_event_quic_tokens.h
@@ -30,5 +30,7 @@ ngx_int_t ngx_quic_new_token(ngx_log_t *log, struct sockaddr *sockaddr,
     time_t expires, ngx_uint_t is_retry);
 ngx_int_t ngx_quic_validate_token(ngx_connection_t *c,
     u_char *key, ngx_quic_header_t *pkt);
+ngx_int_t ngx_quic_handle_new_token_frame(ngx_connection_t *c,
+    ngx_quic_frame_t *frame);
 
 #endif /* _NGX_EVENT_QUIC_TOKENS_H_INCLUDED_ */
diff --git a/src/event/quic/ngx_event_quic_transport.c b/src/event/quic/ngx_event_quic_transport.c
index ba6211c33..72b545615 100644
--- a/src/event/quic/ngx_event_quic_transport.c
+++ b/src/event/quic/ngx_event_quic_transport.c
@@ -97,7 +97,7 @@ static size_t ngx_quic_create_short_header(ngx_quic_header_t *pkt, u_char *out,
     u_char **pnp);
 
 static ngx_int_t ngx_quic_frame_allowed(ngx_quic_header_t *pkt,
-    ngx_uint_t frame_type);
+    ngx_uint_t frame_type, ngx_uint_t is_server);
 static size_t ngx_quic_create_ping(u_char *p);
 static size_t ngx_quic_create_ack(u_char *p, ngx_quic_ack_frame_t *ack,
     ngx_chain_t *ranges);
@@ -742,7 +742,7 @@ ngx_quic_create_retry_itag(ngx_quic_header_t *pkt, u_char *out,
 
 ssize_t
 ngx_quic_parse_frame(ngx_quic_header_t *pkt, u_char *start, u_char *end,
-    ngx_quic_frame_t *f)
+    ngx_quic_frame_t *f, ngx_uint_t is_server)
 {
     u_char      *p;
     uint64_t     varint;
@@ -770,7 +770,7 @@ ngx_quic_parse_frame(ngx_quic_header_t *pkt, u_char *start, u_char *end,
 
     f->type = varint;
 
-    if (ngx_quic_frame_allowed(pkt, f->type) != NGX_OK) {
+    if (ngx_quic_frame_allowed(pkt, f->type, is_server) != NGX_OK) {
         pkt->error = NGX_QUIC_ERR_PROTOCOL_VIOLATION;
         return NGX_ERROR;
     }
@@ -952,6 +952,22 @@ ngx_quic_parse_frame(ngx_quic_header_t *pkt, u_char *start, u_char *end,
 
         break;
 
+    case NGX_QUIC_FT_NEW_TOKEN:
+
+        p = ngx_quic_parse_int(p, end, &f->u.token.length);
+        if (p == NULL) {
+            goto error;
+        }
+
+        p = ngx_quic_read_bytes(p, end, f->u.token.length, &b->pos);
+        if (p == NULL) {
+            goto error;
+        }
+
+        b->last = p;
+
+        break;
+
     case NGX_QUIC_FT_STREAM:
     case NGX_QUIC_FT_STREAM1:
     case NGX_QUIC_FT_STREAM2:
@@ -1133,6 +1149,10 @@ ngx_quic_parse_frame(ngx_quic_header_t *pkt, u_char *start, u_char *end,
 
         break;
 
+    case NGX_QUIC_FT_HANDSHAKE_DONE:
+
+        break;
+
     default:
         ngx_log_error(NGX_LOG_INFO, pkt->log, 0,
                       "quic unknown frame type 0x%xi", f->type);
@@ -1158,7 +1178,8 @@ error:
 
 
 static ngx_int_t
-ngx_quic_frame_allowed(ngx_quic_header_t *pkt, ngx_uint_t frame_type)
+ngx_quic_frame_allowed(ngx_quic_header_t *pkt, ngx_uint_t frame_type,
+    ngx_uint_t is_server)
 {
     uint8_t  ptype;
 
@@ -1168,37 +1189,37 @@ ngx_quic_frame_allowed(ngx_quic_header_t *pkt, ngx_uint_t frame_type)
      * Frame permissions per packet: 4 bits: IH01
      */
     static uint8_t ngx_quic_frame_masks[] = {
-         /* PADDING  */              0xF,
-         /* PING */                  0xF,
-         /* ACK */                   0xD,
-         /* ACK_ECN */               0xD,
-         /* RESET_STREAM */          0x3,
-         /* STOP_SENDING */          0x3,
-         /* CRYPTO */                0xD,
-         /* NEW_TOKEN */             0x0, /* only sent by server */
-         /* STREAM */                0x3,
-         /* STREAM1 */               0x3,
-         /* STREAM2 */               0x3,
-         /* STREAM3 */               0x3,
-         /* STREAM4 */               0x3,
-         /* STREAM5 */               0x3,
-         /* STREAM6 */               0x3,
-         /* STREAM7 */               0x3,
-         /* MAX_DATA */              0x3,
-         /* MAX_STREAM_DATA */       0x3,
-         /* MAX_STREAMS */           0x3,
-         /* MAX_STREAMS2 */          0x3,
-         /* DATA_BLOCKED */          0x3,
-         /* STREAM_DATA_BLOCKED */   0x3,
-         /* STREAMS_BLOCKED */       0x3,
-         /* STREAMS_BLOCKED2 */      0x3,
-         /* NEW_CONNECTION_ID */     0x3,
-         /* RETIRE_CONNECTION_ID */  0x3,
-         /* PATH_CHALLENGE */        0x3,
-         /* PATH_RESPONSE */         0x1,
-         /* CONNECTION_CLOSE */      0xF,
-         /* CONNECTION_CLOSE2 */     0x3,
-         /* HANDSHAKE_DONE */        0x0, /* only sent by server */
+         /* PADDING  */              0xFF,
+         /* PING */                  0xFF,
+         /* ACK */                   0xDD,
+         /* ACK_ECN */               0xDD,
+         /* RESET_STREAM */          0x33,
+         /* STOP_SENDING */          0x33,
+         /* CRYPTO */                0xDD,
+         /* NEW_TOKEN */             0x01, /* only sent by server */
+         /* STREAM */                0x33,
+         /* STREAM1 */               0x33,
+         /* STREAM2 */               0x33,
+         /* STREAM3 */               0x33,
+         /* STREAM4 */               0x33,
+         /* STREAM5 */               0x33,
+         /* STREAM6 */               0x33,
+         /* STREAM7 */               0x33,
+         /* MAX_DATA */              0x33,
+         /* MAX_STREAM_DATA */       0x33,
+         /* MAX_STREAMS */           0x33,
+         /* MAX_STREAMS2 */          0x33,
+         /* DATA_BLOCKED */          0x33,
+         /* STREAM_DATA_BLOCKED */   0x33,
+         /* STREAMS_BLOCKED */       0x33,
+         /* STREAMS_BLOCKED2 */      0x33,
+         /* NEW_CONNECTION_ID */     0x33,
+         /* RETIRE_CONNECTION_ID */  0x33,
+         /* PATH_CHALLENGE */        0x33,
+         /* PATH_RESPONSE */         0x11,
+         /* CONNECTION_CLOSE */      0xFF,
+         /* CONNECTION_CLOSE2 */     0x33,
+         /* HANDSHAKE_DONE */        0x01, /* only sent by server */
     };
 
     if (ngx_quic_long_pkt(pkt->flags)) {
@@ -1217,6 +1238,10 @@ ngx_quic_frame_allowed(ngx_quic_header_t *pkt, ngx_uint_t frame_type)
         ptype = 1; /* application data */
     }
 
+    if (is_server) {
+        ptype <<= 4;
+    }
+
     if (ptype & ngx_quic_frame_masks[frame_type]) {
         return NGX_OK;
     }
@@ -1723,7 +1748,7 @@ ngx_quic_parse_transport_param(u_char *p, u_char *end, uint16_t id,
 
 ngx_int_t
 ngx_quic_parse_transport_params(u_char *p, u_char *end, ngx_quic_tp_t *tp,
-    ngx_log_t *log)
+    ngx_uint_t is_server, ngx_log_t *log)
 {
     uint64_t   id, len;
     ngx_int_t  rc;
@@ -1736,15 +1761,17 @@ ngx_quic_parse_transport_params(u_char *p, u_char *end, ngx_quic_tp_t *tp,
             return NGX_ERROR;
         }
 
-        switch (id) {
-        case NGX_QUIC_TP_ORIGINAL_DCID:
-        case NGX_QUIC_TP_PREFERRED_ADDRESS:
-        case NGX_QUIC_TP_RETRY_SCID:
-        case NGX_QUIC_TP_SR_TOKEN:
-            ngx_log_error(NGX_LOG_INFO, log, 0,
-                          "quic client sent forbidden transport param"
-                          " id:0x%xL", id);
-            return NGX_ERROR;
+        if (is_server) {
+            switch (id) {
+            case NGX_QUIC_TP_ORIGINAL_DCID:
+            case NGX_QUIC_TP_PREFERRED_ADDRESS:
+            case NGX_QUIC_TP_RETRY_SCID:
+            case NGX_QUIC_TP_SR_TOKEN:
+                ngx_log_error(NGX_LOG_INFO, log, 0,
+                              "quic client sent forbidden transport param"
+                              " id:0x%xL", id);
+                return NGX_ERROR;
+            }
         }
 
         p = ngx_quic_parse_int(p, end, &len);
@@ -2028,7 +2055,7 @@ ngx_quic_init_transport_params(ngx_quic_tp_t *tp, ngx_quic_conf_t *qcf)
 
 ssize_t
 ngx_quic_create_transport_params(u_char *pos, u_char *end, ngx_quic_tp_t *tp,
-    size_t *clen)
+    size_t *clen, ngx_uint_t is_server)
 {
     u_char  *p;
     size_t   len;
@@ -2099,16 +2126,19 @@ ngx_quic_create_transport_params(u_char *pos, u_char *end, ngx_quic_tp_t *tp,
     len += ngx_quic_tp_len(NGX_QUIC_TP_ACK_DELAY_EXPONENT,
                            tp->ack_delay_exponent);
 
-    len += ngx_quic_tp_strlen(NGX_QUIC_TP_ORIGINAL_DCID, tp->original_dcid);
     len += ngx_quic_tp_strlen(NGX_QUIC_TP_INITIAL_SCID, tp->initial_scid);
 
-    if (tp->retry_scid.len) {
-        len += ngx_quic_tp_strlen(NGX_QUIC_TP_RETRY_SCID, tp->retry_scid);
-    }
+    if (is_server) {
+        len += ngx_quic_tp_strlen(NGX_QUIC_TP_ORIGINAL_DCID, tp->original_dcid);
 
-    len += ngx_quic_varint_len(NGX_QUIC_TP_SR_TOKEN);
-    len += ngx_quic_varint_len(NGX_QUIC_SR_TOKEN_LEN);
-    len += NGX_QUIC_SR_TOKEN_LEN;
+        if (tp->retry_scid.len) {
+            len += ngx_quic_tp_strlen(NGX_QUIC_TP_RETRY_SCID, tp->retry_scid);
+        }
+
+        len += ngx_quic_varint_len(NGX_QUIC_TP_SR_TOKEN);
+        len += ngx_quic_varint_len(NGX_QUIC_SR_TOKEN_LEN);
+        len += NGX_QUIC_SR_TOKEN_LEN;
+    }
 
     if (pos == NULL) {
         return len;
@@ -2154,16 +2184,19 @@ ngx_quic_create_transport_params(u_char *pos, u_char *end, ngx_quic_tp_t *tp,
     ngx_quic_tp_vint(NGX_QUIC_TP_ACK_DELAY_EXPONENT,
                      tp->ack_delay_exponent);
 
-    ngx_quic_tp_str(NGX_QUIC_TP_ORIGINAL_DCID, tp->original_dcid);
     ngx_quic_tp_str(NGX_QUIC_TP_INITIAL_SCID, tp->initial_scid);
 
-    if (tp->retry_scid.len) {
-        ngx_quic_tp_str(NGX_QUIC_TP_RETRY_SCID, tp->retry_scid);
-    }
+    if (is_server) {
+        ngx_quic_tp_str(NGX_QUIC_TP_ORIGINAL_DCID, tp->original_dcid);
+
+        if (tp->retry_scid.len) {
+            ngx_quic_tp_str(NGX_QUIC_TP_RETRY_SCID, tp->retry_scid);
+        }
 
-    ngx_quic_build_int(&p, NGX_QUIC_TP_SR_TOKEN);
-    ngx_quic_build_int(&p, NGX_QUIC_SR_TOKEN_LEN);
-    p = ngx_cpymem(p, tp->sr_token, NGX_QUIC_SR_TOKEN_LEN);
+        ngx_quic_build_int(&p, NGX_QUIC_TP_SR_TOKEN);
+        ngx_quic_build_int(&p, NGX_QUIC_SR_TOKEN_LEN);
+        p = ngx_cpymem(p, tp->sr_token, NGX_QUIC_SR_TOKEN_LEN);
+    }
 
     return p - pos;
 }
diff --git a/src/event/quic/ngx_event_quic_transport.h b/src/event/quic/ngx_event_quic_transport.h
index 656cb09fb..2319d6bdf 100644
--- a/src/event/quic/ngx_event_quic_transport.h
+++ b/src/event/quic/ngx_event_quic_transport.h
@@ -112,6 +112,9 @@
 
 #define NGX_QUIC_ERR_CRYPTO(e)  (NGX_QUIC_ERR_CRYPTO_ERROR + (e))
 
+/* The special code to close connection without any response */
+#define NGX_QUIC_ERR_CLOSE                         0x10000000
+
 
 /* 22.3.  QUIC Transport Parameters Registry */
 #define NGX_QUIC_TP_ORIGINAL_DCID                        0x00
@@ -379,7 +382,7 @@ size_t ngx_quic_create_retry_itag(ngx_quic_header_t *pkt, u_char *out,
     u_char **start);
 
 ssize_t ngx_quic_parse_frame(ngx_quic_header_t *pkt, u_char *start, u_char *end,
-    ngx_quic_frame_t *frame);
+    ngx_quic_frame_t *frame, ngx_uint_t is_server);
 ssize_t ngx_quic_create_frame(u_char *p, ngx_quic_frame_t *f);
 
 ssize_t ngx_quic_parse_ack_range(ngx_log_t *log, u_char *start,
@@ -389,9 +392,9 @@ size_t ngx_quic_create_ack_range(u_char *p, uint64_t gap, uint64_t range);
 ngx_int_t ngx_quic_init_transport_params(ngx_quic_tp_t *tp,
     ngx_quic_conf_t *qcf);
 ngx_int_t ngx_quic_parse_transport_params(u_char *p, u_char *end,
-    ngx_quic_tp_t *tp, ngx_log_t *log);
+    ngx_quic_tp_t *tp, ngx_uint_t is_server, ngx_log_t *log);
 ssize_t ngx_quic_create_transport_params(u_char *p, u_char *end,
-    ngx_quic_tp_t *tp, size_t *clen);
+    ngx_quic_tp_t *tp, size_t *clen, ngx_uint_t is_server);
 
 void ngx_quic_dcid_encode_key(u_char *dcid, uint64_t key);
 
diff --git a/src/event/quic/ngx_event_quic_udp.c b/src/event/quic/ngx_event_quic_udp.c
index 15b54bc82..95933359c 100644
--- a/src/event/quic/ngx_event_quic_udp.c
+++ b/src/event/quic/ngx_event_quic_udp.c
@@ -174,6 +174,8 @@ ngx_quic_recvmsg(ngx_event_t *ev)
             }
 #endif
 
+            c->log->action = "handling quic input";
+
             ngx_memzero(&buf, sizeof(ngx_buf_t));
 
             buf.pos = buffer;
@@ -186,20 +188,12 @@ ngx_quic_recvmsg(ngx_event_t *ev)
             ngx_memcpy(&qsock->sockaddr, sockaddr, socklen);
             qsock->socklen = socklen;
 
-            c->udp->buffer = &buf;
-
-            rev = c->read;
-            rev->ready = 1;
-            rev->active = 0;
-
-            rev->handler(rev);
-
-            if (c->udp) {
-                c->udp->buffer = NULL;
+            if (ngx_quic_handle_datagram(c, &buf) == NGX_ERROR) {
+                ngx_quic_set_error(c, NGX_QUIC_ERR_INTERNAL_ERROR,
+                                   "datagram handling error");
             }
 
-            rev->ready = 0;
-            rev->active = 1;
+            ngx_quic_end_handler(c);
 
             goto next;
         }
@@ -291,8 +285,6 @@ ngx_quic_recvmsg(ngx_event_t *ev)
 
         c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1);
 
-        c->start_time = ngx_current_msec;
-
 #if (NGX_STAT_STUB)
         (void) ngx_atomic_fetch_add(ngx_stat_handled, 1);
 #endif
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index 7897b3f4b..ea09fcf61 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -10,6 +10,10 @@
 #include <ngx_http.h>
 #include <ngx_http_proxy_module.h>
 
+#if (NGX_QUIC_OPENSSL_COMPAT)
+#include <ngx_event_quic_openssl_compat.h>
+#endif
+
 
 #define  NGX_HTTP_PROXY_COOKIE_SECURE           0x0001
 #define  NGX_HTTP_PROXY_COOKIE_SECURE_ON        0x0002
@@ -200,6 +204,9 @@ static ngx_conf_enum_t  ngx_http_proxy_http_version[] = {
     { ngx_string("1.1"), NGX_HTTP_VERSION_11 },
 #if (NGX_HTTP_V2)
     { ngx_string("2"), NGX_HTTP_VERSION_20 },
+#endif
+#if (NGX_HTTP_V3)
+    { ngx_string("3"), NGX_HTTP_VERSION_30 },
 #endif
     { ngx_null_string, 0 }
 };
@@ -706,6 +713,24 @@ static ngx_command_t  ngx_http_proxy_commands[] = {
       offsetof(ngx_http_proxy_loc_conf_t, ssl_conf_commands),
       &ngx_http_proxy_ssl_conf_command_post },
 
+#endif
+
+#if (NGX_QUIC)
+
+    { ngx_string("proxy_quic_idle_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_proxy_loc_conf_t, quic_idle_timeout),
+      NULL },
+
+    { ngx_string("proxy_quic_stream_buffer_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_proxy_loc_conf_t, quic_stream_buffer_size),
+      NULL },
+
 #endif
 
       ngx_null_command
@@ -886,6 +911,12 @@ ngx_http_proxy_handler(ngx_http_request_t *r)
     }
 #endif
 
+#if (NGX_HTTP_V3)
+    if (plcf->http_version == NGX_HTTP_VERSION_30) {
+        return ngx_http_v3_proxy_handler(r);
+    }
+#endif
+
     if (ngx_http_upstream_create(r) != NGX_OK) {
         return NGX_HTTP_INTERNAL_SERVER_ERROR;
     }
@@ -3605,6 +3636,11 @@ ngx_http_proxy_create_loc_conf(ngx_conf_t *cf)
     conf->ssl_conf_commands = NGX_CONF_UNSET_PTR;
 #endif
 
+#if (NGX_QUIC)
+    conf->quic_idle_timeout = NGX_CONF_UNSET_MSEC;
+    conf->quic_stream_buffer_size = NGX_CONF_UNSET_SIZE;
+#endif
+
     /* the hardcoded values */
     conf->upstream.cyclic_temp_file = 0;
     conf->upstream.change_buffering = 1;
@@ -3968,6 +4004,28 @@ ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
         return NGX_CONF_ERROR;
     }
 
+#endif
+
+#if (NGX_QUIC)
+
+    ngx_conf_merge_msec_value(conf->quic_idle_timeout,
+                              prev->quic_idle_timeout, 60000);
+    ngx_conf_merge_size_value(conf->quic_stream_buffer_size,
+                              prev->quic_stream_buffer_size, 65536);
+
+    conf->upstream.quic = ngx_pcalloc(cf->pool, sizeof(ngx_quic_conf_t));
+    if (conf->upstream.quic == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    conf->upstream.quic->max_concurrent_streams_bidi = 0;
+    conf->upstream.quic->max_concurrent_streams_uni = 3;
+    conf->upstream.quic->stream_close_code = NGX_HTTP_V3_ERR_NO_ERROR;
+    conf->upstream.quic->active_connection_id_limit = 2;
+    conf->upstream.quic->stream_buffer_size = conf->quic_stream_buffer_size;
+    conf->upstream.quic->idle_timeout = conf->quic_idle_timeout;
+    conf->upstream.quic->ssl = conf->upstream.ssl;
+
 #endif
 
     ngx_conf_merge_ptr_value(conf->method, prev->method, NULL);
@@ -5374,6 +5432,12 @@ ngx_http_proxy_set_ssl(ngx_conf_t *cf, ngx_http_proxy_loc_conf_t *plcf)
         return NGX_ERROR;
     }
 
+#if (NGX_QUIC_OPENSSL_COMPAT)
+    if (ngx_quic_compat_init(cf, plcf->upstream.ssl->ctx) != NGX_OK) {
+        return NGX_ERROR;
+    }
+#endif
+
     return NGX_OK;
 }
 
diff --git a/src/http/modules/ngx_http_proxy_module.h b/src/http/modules/ngx_http_proxy_module.h
index a0f79bc13..77de83e0d 100644
--- a/src/http/modules/ngx_http_proxy_module.h
+++ b/src/http/modules/ngx_http_proxy_module.h
@@ -85,6 +85,11 @@ typedef struct {
     ngx_str_t                      ssl_crl;
     ngx_array_t                   *ssl_conf_commands;
 #endif
+
+#if (NGX_QUIC || NGX_COMPAT)
+    ngx_msec_t                     quic_idle_timeout;
+    size_t                         quic_stream_buffer_size;
+#endif
 } ngx_http_proxy_loc_conf_t;
 
 
@@ -120,6 +125,10 @@ ngx_int_t ngx_http_proxy_rewrite_cookie(ngx_http_request_t *r,
 ngx_int_t ngx_http_proxy_v2_handler(ngx_http_request_t *r);
 #endif
 
+#if (NGX_HTTP_V3)
+ngx_int_t ngx_http_v3_proxy_handler(ngx_http_request_t *r);
+#endif
+
 
 extern ngx_module_t  ngx_http_proxy_module;
 
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 41c1cda04..35117e30d 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -4002,7 +4002,7 @@ ngx_http_close_connection(ngx_connection_t *c)
 #endif
 
 #if (NGX_HTTP_V3)
-    if (c->quic) {
+    if (c->quic && c->quic->stream) {
         ngx_http_v3_reset_stream(c);
     }
 #endif
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index 2e4b2b48f..4023811f2 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -1658,6 +1658,16 @@ ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
         }
     }
 
+    c->sockaddr = ngx_palloc(c->pool, u->peer.socklen);
+    if (c->sockaddr == NULL) {
+        ngx_http_upstream_finalize_request(r, u,
+                                           NGX_HTTP_INTERNAL_SERVER_ERROR);
+        return;
+    }
+
+    ngx_memcpy(c->sockaddr, u->peer.sockaddr, u->peer.socklen);
+    c->socklen = u->peer.socklen;
+
     c->log = r->connection->log;
     c->pool->log = c->log;
     c->read->log = c->log;
@@ -1742,10 +1752,18 @@ ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
         return;
     }
 
-    if (ngx_ssl_create_connection(u->conf->ssl, c,
-                                  NGX_SSL_BUFFER|NGX_SSL_CLIENT)
-        != NGX_OK)
+#if (NGX_QUIC)
+    if (u->quic) {
+        rc = ngx_quic_create_connection(u->conf->quic, c, NGX_SSL_CLIENT);
+
+    } else
+#endif
     {
+        rc = ngx_ssl_create_connection(u->conf->ssl, c,
+                                       NGX_SSL_BUFFER|NGX_SSL_CLIENT);
+    }
+
+    if (rc != NGX_OK) {
         ngx_http_upstream_finalize_request(r, u,
                                            NGX_HTTP_INTERNAL_SERVER_ERROR);
         return;
@@ -1808,9 +1826,19 @@ ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
         }
     }
 
-    r->connection->log->action = "SSL handshaking to upstream";
+#if (NGX_QUIC)
+    if (u->quic) {
+        r->connection->log->action = "QUIC handshaking to upstream";
+
+        rc = ngx_quic_handshake(c);
+
+    } else
+#endif
+    {
+        r->connection->log->action = "SSL handshaking to upstream";
 
-    rc = ngx_ssl_handshake(c);
+        rc = ngx_ssl_handshake(c);
+    }
 
     if (rc == NGX_AGAIN) {
 
@@ -1875,6 +1903,14 @@ ngx_http_upstream_ssl_handshake(ngx_http_request_t *r, ngx_http_upstream_t *u,
             }
         }
 
+        if (u->create_stream) {
+            if (u->create_stream(r) != NGX_OK) {
+                goto failed;
+            }
+
+            c = u->peer.connection;
+        }
+
         if (!c->ssl->sendfile) {
             c->sendfile = 0;
             u->output.sendfile = 0;
@@ -2232,6 +2268,16 @@ ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u,
         u->write_event_handler = ngx_http_upstream_dummy_handler;
     }
 
+#if (NGX_QUIC)
+    if (u->quic) {
+        if (ngx_quic_shutdown_stream(c, NGX_WRITE_SHUTDOWN) != NGX_OK) {
+            ngx_http_upstream_finalize_request(r, u,
+                                           NGX_HTTP_INTERNAL_SERVER_ERROR);
+            return;
+        }
+    }
+#endif
+
     if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
         ngx_http_upstream_finalize_request(r, u,
                                            NGX_HTTP_INTERNAL_SERVER_ERROR);
@@ -4694,7 +4740,15 @@ ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
             u->peer.connection->ssl->no_wait_shutdown = 1;
             u->peer.connection->ssl->no_send_shutdown = 1;
 
-            (void) ngx_ssl_shutdown(u->peer.connection);
+#if (NGX_QUIC)
+            if (u->quic) {
+                (void) ngx_quic_shutdown(u->peer.connection);
+
+            } else
+#endif
+            {
+                (void) ngx_ssl_shutdown(u->peer.connection);
+            }
         }
 #endif
 
@@ -4782,7 +4836,15 @@ ngx_http_upstream_finalize_request(ngx_http_request_t *r,
 
             u->peer.connection->ssl->no_wait_shutdown = 1;
 
-            (void) ngx_ssl_shutdown(u->peer.connection);
+#if (NGX_QUIC)
+            if (u->quic) {
+                (void) ngx_quic_shutdown(u->peer.connection);
+
+            } else
+#endif
+            {
+                (void) ngx_ssl_shutdown(u->peer.connection);
+            }
         }
 #endif
 
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
index 3afe6e8f9..dc6b20e40 100644
--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -251,6 +251,10 @@ typedef struct {
     ngx_array_t                     *ssl_passwords;
 #endif
 
+#if (NGX_QUIC || NGX_COMPAT)
+    ngx_quic_conf_t                 *quic;
+#endif
+
     ngx_str_t                        module;
 
     NGX_COMPAT_BEGIN(6)
@@ -370,6 +374,7 @@ struct ngx_http_upstream_s {
     ngx_int_t                      (*create_key)(ngx_http_request_t *r);
 #endif
     ngx_int_t                      (*create_request)(ngx_http_request_t *r);
+    ngx_int_t                      (*create_stream)(ngx_http_request_t *r);
     ngx_int_t                      (*reinit_request)(ngx_http_request_t *r);
     ngx_int_t                      (*process_header)(ngx_http_request_t *r);
     void                           (*abort_request)(ngx_http_request_t *r);
@@ -399,6 +404,7 @@ struct ngx_http_upstream_s {
     unsigned                         cacheable:1;
     unsigned                         accel:1;
     unsigned                         ssl:1;
+    unsigned                         quic:1;
 #if (NGX_HTTP_CACHE)
     unsigned                         cache_status:3;
 #endif
diff --git a/src/http/v3/ngx_http_v3.c b/src/http/v3/ngx_http_v3.c
index d8597ec5c..43cd1f39d 100644
--- a/src/http/v3/ngx_http_v3.c
+++ b/src/http/v3/ngx_http_v3.c
@@ -10,7 +10,6 @@
 #include <ngx_http.h>
 
 
-static void ngx_http_v3_keepalive_handler(ngx_event_t *ev);
 static void ngx_http_v3_cleanup_session(void *data);
 
 
@@ -18,11 +17,8 @@ ngx_int_t
 ngx_http_v3_init_session(ngx_connection_t *c)
 {
     ngx_pool_cleanup_t     *cln;
-    ngx_http_connection_t  *hc;
     ngx_http_v3_session_t  *h3c;
 
-    hc = c->data;
-
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init session");
 
     h3c = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_session_t));
@@ -30,13 +26,9 @@ ngx_http_v3_init_session(ngx_connection_t *c)
         goto failed;
     }
 
-    h3c->http_connection = hc;
-
-    ngx_queue_init(&h3c->blocked);
+    h3c->connection = c;
 
-    h3c->keepalive.log = c->log;
-    h3c->keepalive.data = c;
-    h3c->keepalive.handler = ngx_http_v3_keepalive_handler;
+    ngx_queue_init(&h3c->queue);
 
     h3c->table.send_insert_count.log = c->log;
     h3c->table.send_insert_count.data = c;
@@ -61,20 +53,6 @@ failed:
 }
 
 
-static void
-ngx_http_v3_keepalive_handler(ngx_event_t *ev)
-{
-    ngx_connection_t  *c;
-
-    c = ev->data;
-
-    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 keepalive handler");
-
-    ngx_http_v3_shutdown_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
-                                    "keepalive timeout");
-}
-
-
 static void
 ngx_http_v3_cleanup_session(void *data)
 {
@@ -82,10 +60,6 @@ ngx_http_v3_cleanup_session(void *data)
 
     ngx_http_v3_cleanup_table(h3c);
 
-    if (h3c->keepalive.timer_set) {
-        ngx_del_timer(&h3c->keepalive);
-    }
-
     if (h3c->table.send_insert_count.posted) {
         ngx_delete_posted_event(&h3c->table.send_insert_count);
     }
@@ -109,3 +83,27 @@ ngx_http_v3_check_flood(ngx_connection_t *c)
 
     return NGX_OK;
 }
+
+
+void
+ngx_http_v3_close_connection(ngx_connection_t *c)
+{
+    ngx_pool_t  *pool;
+
+    if (ngx_quic_shutdown(c) == NGX_AGAIN) {
+        c->ssl->handler = ngx_http_v3_close_connection;
+        return;
+    }
+
+#if (NGX_STAT_STUB)
+    (void) ngx_atomic_fetch_add(ngx_stat_active, -1);
+#endif
+
+    c->destroyed = 1;
+
+    pool = c->pool;
+
+    ngx_close_connection(c);
+
+    ngx_destroy_pool(pool);
+}
diff --git a/src/http/v3/ngx_http_v3.h b/src/http/v3/ngx_http_v3.h
index 8fd212c1f..b43ad7253 100644
--- a/src/http/v3/ngx_http_v3.h
+++ b/src/http/v3/ngx_http_v3.h
@@ -79,11 +79,12 @@
 
 
 #define ngx_http_v3_get_session(c)                                            \
-    ((ngx_http_v3_session_t *) ((c)->quic ? (c)->quic->parent->data           \
-                                          : (c)->data))
+    ((ngx_http_v3_session_t *) ((c)->quic->stream                             \
+                                     ? (c)->quic->stream->parent->data        \
+                                     : (c)->data))
 
 #define ngx_http_quic_get_connection(c)                                       \
-    (ngx_http_v3_get_session(c)->http_connection)
+    ((ngx_http_connection_t *) ngx_http_v3_get_session(c)->data)
 
 #define ngx_http_v3_get_module_loc_conf(c, module)                            \
     ngx_http_get_module_loc_conf(ngx_http_quic_get_connection(c)->conf_ctx,   \
@@ -94,12 +95,11 @@
                                  module)
 
 #define ngx_http_v3_finalize_connection(c, code, reason)                      \
-    ngx_quic_finalize_connection((c)->quic ? (c)->quic->parent : (c),         \
-                                 code, reason)
-
-#define ngx_http_v3_shutdown_connection(c, code, reason)                      \
-    ngx_quic_shutdown_connection((c)->quic ? (c)->quic->parent : (c),         \
-                                 code, reason)
+    ngx_quic_set_app_error((c)->quic->stream ? (c)->quic->stream->parent      \
+                                             : (c), code, reason);            \
+    ngx_post_event((c)->quic->stream ? (c)->quic->stream->parent->read        \
+                                     : (c)->read,                             \
+                   &ngx_posted_events)
 
 
 typedef struct {
@@ -121,15 +121,19 @@ struct ngx_http_v3_parse_s {
 
 
 struct ngx_http_v3_session_s {
-    ngx_http_connection_t        *http_connection;
+    ngx_connection_t             *connection;
+
+    void                         *data;
 
     ngx_http_v3_dynamic_table_t   table;
 
-    ngx_event_t                   keepalive;
-    ngx_uint_t                    nrequests;
+    ngx_queue_t                   queue;
 
-    ngx_queue_t                   blocked;
+    size_t                        max_table_capacity;
+    ngx_uint_t                    max_blocked_streams;
+    ngx_uint_t                    nrequests;
     ngx_uint_t                    nblocked;
+    ngx_uint_t                    max_literal;
 
     uint64_t                      next_request_id;
 
@@ -147,8 +151,7 @@ void ngx_http_v3_init_stream(ngx_connection_t *c);
 void ngx_http_v3_reset_stream(ngx_connection_t *c);
 ngx_int_t ngx_http_v3_init_session(ngx_connection_t *c);
 ngx_int_t ngx_http_v3_check_flood(ngx_connection_t *c);
-ngx_int_t ngx_http_v3_init(ngx_connection_t *c);
-void ngx_http_v3_shutdown(ngx_connection_t *c);
+void ngx_http_v3_close_connection(ngx_connection_t *c);
 
 ngx_int_t ngx_http_v3_read_request_body(ngx_http_request_t *r);
 ngx_int_t ngx_http_v3_read_unbuffered_request_body(ngx_http_request_t *r);
diff --git a/src/http/v3/ngx_http_v3_encode.c b/src/http/v3/ngx_http_v3_encode.c
index fb089c413..763792914 100644
--- a/src/http/v3/ngx_http_v3_encode.c
+++ b/src/http/v3/ngx_http_v3_encode.c
@@ -180,7 +180,8 @@ ngx_http_v3_encode_field_lri(u_char *p, ngx_uint_t dynamic, ngx_uint_t index,
 
 
 uintptr_t
-ngx_http_v3_encode_field_l(u_char *p, ngx_str_t *name, ngx_str_t *value)
+ngx_http_v3_encode_field_l(u_char *p, u_char *name, size_t name_len,
+    u_char *value, size_t value_len)
 {
     size_t   hlen;
     u_char  *p1, *p2;
@@ -188,18 +189,18 @@ ngx_http_v3_encode_field_l(u_char *p, ngx_str_t *name, ngx_str_t *value)
     /* Literal Field Line With Literal Name */
 
     if (p == NULL) {
-        return ngx_http_v3_encode_prefix_int(NULL, name->len, 3)
-               + name->len
-               + ngx_http_v3_encode_prefix_int(NULL, value->len, 7)
-               + value->len;
+        return ngx_http_v3_encode_prefix_int(NULL, name_len, 3)
+               + name_len
+               + ngx_http_v3_encode_prefix_int(NULL, value_len, 7)
+               + value_len;
     }
 
     p1 = p;
     *p = 0x20;
-    p = (u_char *) ngx_http_v3_encode_prefix_int(p, name->len, 3);
+    p = (u_char *) ngx_http_v3_encode_prefix_int(p, name_len, 3);
 
     p2 = p;
-    hlen = ngx_http_huff_encode(name->data, name->len, p, 1);
+    hlen = ngx_http_huff_encode(name, name_len, p, 1);
 
     if (hlen) {
         p = p1;
@@ -213,16 +214,16 @@ ngx_http_v3_encode_field_l(u_char *p, ngx_str_t *name, ngx_str_t *value)
         p += hlen;
 
     } else {
-        ngx_strlow(p, name->data, name->len);
-        p += name->len;
+        ngx_strlow(p, name, name_len);
+        p += name_len;
     }
 
     p1 = p;
     *p = 0;
-    p = (u_char *) ngx_http_v3_encode_prefix_int(p, value->len, 7);
+    p = (u_char *) ngx_http_v3_encode_prefix_int(p, value_len, 7);
 
     p2 = p;
-    hlen = ngx_http_huff_encode(value->data, value->len, p, 0);
+    hlen = ngx_http_huff_encode(value, value_len, p, 0);
 
     if (hlen) {
         p = p1;
@@ -236,7 +237,7 @@ ngx_http_v3_encode_field_l(u_char *p, ngx_str_t *name, ngx_str_t *value)
         p += hlen;
 
     } else {
-        p = ngx_cpymem(p, value->data, value->len);
+        p = ngx_cpymem(p, value, value_len);
     }
 
     return (uintptr_t) p;
diff --git a/src/http/v3/ngx_http_v3_encode.h b/src/http/v3/ngx_http_v3_encode.h
index fca376da5..e227b6f77 100644
--- a/src/http/v3/ngx_http_v3_encode.h
+++ b/src/http/v3/ngx_http_v3_encode.h
@@ -24,8 +24,8 @@ uintptr_t ngx_http_v3_encode_field_ri(u_char *p, ngx_uint_t dynamic,
     ngx_uint_t index);
 uintptr_t ngx_http_v3_encode_field_lri(u_char *p, ngx_uint_t dynamic,
     ngx_uint_t index, u_char *data, size_t len);
-uintptr_t ngx_http_v3_encode_field_l(u_char *p, ngx_str_t *name,
-    ngx_str_t *value);
+uintptr_t ngx_http_v3_encode_field_l(u_char *p, u_char *name, size_t name_len,
+    u_char *data, size_t value_len);
 uintptr_t ngx_http_v3_encode_field_pbi(u_char *p, ngx_uint_t index);
 uintptr_t ngx_http_v3_encode_field_lpbi(u_char *p, ngx_uint_t index,
     u_char *data, size_t len);
diff --git a/src/http/v3/ngx_http_v3_filter_module.c b/src/http/v3/ngx_http_v3_filter_module.c
index e3f15368f..cb1938b7d 100644
--- a/src/http/v3/ngx_http_v3_filter_module.c
+++ b/src/http/v3/ngx_http_v3_filter_module.c
@@ -10,26 +10,6 @@
 #include <ngx_http.h>
 
 
-/* static table indices */
-#define NGX_HTTP_V3_HEADER_AUTHORITY                 0
-#define NGX_HTTP_V3_HEADER_PATH_ROOT                 1
-#define NGX_HTTP_V3_HEADER_CONTENT_LENGTH_ZERO       4
-#define NGX_HTTP_V3_HEADER_DATE                      6
-#define NGX_HTTP_V3_HEADER_LAST_MODIFIED             10
-#define NGX_HTTP_V3_HEADER_LOCATION                  12
-#define NGX_HTTP_V3_HEADER_METHOD_GET                17
-#define NGX_HTTP_V3_HEADER_SCHEME_HTTP               22
-#define NGX_HTTP_V3_HEADER_SCHEME_HTTPS              23
-#define NGX_HTTP_V3_HEADER_STATUS_103                24
-#define NGX_HTTP_V3_HEADER_STATUS_200                25
-#define NGX_HTTP_V3_HEADER_ACCEPT_ENCODING           31
-#define NGX_HTTP_V3_HEADER_CONTENT_TYPE_TEXT_PLAIN   53
-#define NGX_HTTP_V3_HEADER_VARY_ACCEPT_ENCODING      59
-#define NGX_HTTP_V3_HEADER_ACCEPT_LANGUAGE           72
-#define NGX_HTTP_V3_HEADER_SERVER                    92
-#define NGX_HTTP_V3_HEADER_USER_AGENT                95
-
-
 typedef struct {
     ngx_chain_t         *free;
     ngx_chain_t         *busy;
@@ -313,8 +293,9 @@ ngx_http_v3_header_filter(ngx_http_request_t *r)
             continue;
         }
 
-        len += ngx_http_v3_encode_field_l(NULL, &header[i].key,
-                                          &header[i].value);
+        len += ngx_http_v3_encode_field_l(NULL,
+                                    header[i].key.data, header[i].key.len,
+                                    header[i].value.data, header[i].value.len);
     }
 
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 header len:%uz", len);
@@ -500,8 +481,8 @@ ngx_http_v3_header_filter(ngx_http_request_t *r)
                        &header[i].key, &header[i].value);
 
         b->last = (u_char *) ngx_http_v3_encode_field_l(b->last,
-                                                        &header[i].key,
-                                                        &header[i].value);
+                                    header[i].key.data, header[i].key.len,
+                                    header[i].value.data, header[i].value.len);
     }
 
     if (r->header_only) {
@@ -631,8 +612,9 @@ ngx_http_v3_early_hints_filter(ngx_http_request_t *r)
             continue;
         }
 
-        len += ngx_http_v3_encode_field_l(NULL, &header[i].key,
-                                          &header[i].value);
+        len += ngx_http_v3_encode_field_l(NULL,
+                                    header[i].key.data, header[i].key.len,
+                                    header[i].value.data, header[i].value.len);
     }
 
     if (len == 0) {
@@ -685,8 +667,8 @@ ngx_http_v3_early_hints_filter(ngx_http_request_t *r)
                        &header[i].key, &header[i].value);
 
         b->last = (u_char *) ngx_http_v3_encode_field_l(b->last,
-                                                        &header[i].key,
-                                                        &header[i].value);
+                                    header[i].key.data, header[i].key.len,
+                                    header[i].value.data, header[i].value.len);
     }
 
     b->flush = 1;
@@ -888,8 +870,9 @@ ngx_http_v3_create_trailers(ngx_http_request_t *r,
             continue;
         }
 
-        len += ngx_http_v3_encode_field_l(NULL, &header[i].key,
-                                          &header[i].value);
+        len += ngx_http_v3_encode_field_l(NULL,
+                                    header[i].key.data, header[i].key.len,
+                                    header[i].value.data, header[i].value.len);
     }
 
     cl = ngx_chain_get_free_buf(r->pool, &ctx->free);
@@ -945,8 +928,8 @@ ngx_http_v3_create_trailers(ngx_http_request_t *r,
                        &header[i].key, &header[i].value);
 
         b->last = (u_char *) ngx_http_v3_encode_field_l(b->last,
-                                                        &header[i].key,
-                                                        &header[i].value);
+                                    header[i].key.data, header[i].key.len,
+                                    header[i].value.data, header[i].value.len);
     }
 
     n = b->last - b->pos;
diff --git a/src/http/v3/ngx_http_v3_module.c b/src/http/v3/ngx_http_v3_module.c
index 139bd65f3..ea2587435 100644
--- a/src/http/v3/ngx_http_v3_module.c
+++ b/src/http/v3/ngx_http_v3_module.c
@@ -210,9 +210,6 @@ ngx_http_v3_create_srv_conf(ngx_conf_t *cf)
     h3scf->quic.stream_reject_code_bidi = NGX_HTTP_V3_ERR_REQUEST_REJECTED;
     h3scf->quic.active_connection_id_limit = NGX_CONF_UNSET_UINT;
 
-    h3scf->quic.init = ngx_http_v3_init;
-    h3scf->quic.shutdown = ngx_http_v3_shutdown;
-
     return h3scf;
 }
 
@@ -223,8 +220,7 @@ ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
     ngx_http_v3_srv_conf_t *prev = parent;
     ngx_http_v3_srv_conf_t *conf = child;
 
-    ngx_http_ssl_srv_conf_t   *sscf;
-    ngx_http_core_srv_conf_t  *cscf;
+    ngx_http_ssl_srv_conf_t  *sscf;
 
     ngx_conf_merge_value(conf->enable, prev->enable, 1);
 
@@ -282,9 +278,6 @@ ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
         return NGX_CONF_ERROR;
     }
 
-    cscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_core_module);
-    conf->quic.handshake_timeout = cscf->client_header_timeout;
-
     sscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_ssl_module);
     conf->quic.ssl = &sscf->ssl;
 
diff --git a/src/http/v3/ngx_http_v3_parse.c b/src/http/v3/ngx_http_v3_parse.c
index bcbf0dbe1..e37a7de5e 100644
--- a/src/http/v3/ngx_http_v3_parse.c
+++ b/src/http/v3/ngx_http_v3_parse.c
@@ -20,8 +20,6 @@ static void ngx_http_v3_parse_end_local(ngx_buf_t *b, ngx_buf_t *loc,
     ngx_uint_t *n);
 static ngx_int_t ngx_http_v3_parse_skip(ngx_buf_t *b, ngx_uint_t *length);
 
-static ngx_int_t ngx_http_v3_parse_varlen_int(ngx_connection_t *c,
-    ngx_http_v3_parse_varlen_int_t *st, ngx_buf_t *b);
 static ngx_int_t ngx_http_v3_parse_prefix_int(ngx_connection_t *c,
     ngx_http_v3_parse_prefix_int_t *st, ngx_uint_t prefix, ngx_buf_t *b);
 
@@ -42,24 +40,14 @@ static ngx_int_t ngx_http_v3_parse_field_pbi(ngx_connection_t *c,
 static ngx_int_t ngx_http_v3_parse_field_lpbi(ngx_connection_t *c,
     ngx_http_v3_parse_field_t *st, ngx_buf_t *b);
 
-static ngx_int_t ngx_http_v3_parse_control(ngx_connection_t *c,
-    ngx_http_v3_parse_control_t *st, ngx_buf_t *b);
 static ngx_int_t ngx_http_v3_parse_settings(ngx_connection_t *c,
     ngx_http_v3_parse_settings_t *st, ngx_buf_t *b);
 
-static ngx_int_t ngx_http_v3_parse_encoder(ngx_connection_t *c,
-    ngx_http_v3_parse_encoder_t *st, ngx_buf_t *b);
 static ngx_int_t ngx_http_v3_parse_field_inr(ngx_connection_t *c,
     ngx_http_v3_parse_field_t *st, ngx_buf_t *b);
 static ngx_int_t ngx_http_v3_parse_field_iln(ngx_connection_t *c,
     ngx_http_v3_parse_field_t *st, ngx_buf_t *b);
 
-static ngx_int_t ngx_http_v3_parse_decoder(ngx_connection_t *c,
-    ngx_http_v3_parse_decoder_t *st, ngx_buf_t *b);
-
-static ngx_int_t ngx_http_v3_parse_lookup(ngx_connection_t *c,
-    ngx_uint_t dynamic, ngx_uint_t index, ngx_str_t *name, ngx_str_t *value);
-
 
 static void
 ngx_http_v3_parse_start_local(ngx_buf_t *b, ngx_buf_t *loc, ngx_uint_t n)
@@ -94,7 +82,7 @@ ngx_http_v3_parse_skip(ngx_buf_t *b, ngx_uint_t *length)
 }
 
 
-static ngx_int_t
+ngx_int_t
 ngx_http_v3_parse_varlen_int(ngx_connection_t *c,
     ngx_http_v3_parse_varlen_int_t *st, ngx_buf_t *b)
 {
@@ -220,8 +208,6 @@ ngx_http_v3_parse_prefix_int(ngx_connection_t *c,
             if (st->shift == 56
                 && ((ch & 0x80) || (st->value & 0xc000000000000000)))
             {
-                ngx_log_error(NGX_LOG_INFO, c->log, 0,
-                              "client exceeded integer size limit");
                 return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
             }
 
@@ -248,8 +234,10 @@ ngx_int_t
 ngx_http_v3_parse_headers(ngx_connection_t *c, ngx_http_v3_parse_headers_t *st,
     ngx_buf_t *b)
 {
-    ngx_buf_t  loc;
-    ngx_int_t  rc;
+    ngx_buf_t                   loc;
+    ngx_int_t                   rc;
+    ngx_http_v3_parse_field_t  *f;
+
     enum {
         sw_start = 0,
         sw_type,
@@ -348,14 +336,32 @@ ngx_http_v3_parse_headers(ngx_connection_t *c, ngx_http_v3_parse_headers_t *st,
                 return rc;
             }
 
+            st->field_rep.max_literal = st->max_literal;
+
             st->state = sw_verify;
             break;
 
         case sw_verify:
 
-            rc = ngx_http_v3_check_insert_count(c, st->prefix.insert_count);
-            if (rc != NGX_OK) {
-                return rc;
+            if (st->prefix.insert_count > 0) {
+                rc = st->process_insert_count(st->data,
+                                              &st->prefix.insert_count);
+                if (rc != NGX_OK) {
+                    return rc;
+                }
+
+                st->insert_count = st->prefix.insert_count;
+
+                if (st->prefix.sign) {
+                    if (st->insert_count <= st->prefix.delta_base) {
+                        return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED;
+                    }
+
+                    st->base = st->insert_count - st->prefix.delta_base - 1;
+
+                } else {
+                    st->base = st->insert_count + st->prefix.delta_base;
+                }
             }
 
             st->state = sw_field_rep;
@@ -366,8 +372,7 @@ ngx_http_v3_parse_headers(ngx_connection_t *c, ngx_http_v3_parse_headers_t *st,
 
             ngx_http_v3_parse_start_local(b, &loc, st->length);
 
-            rc = ngx_http_v3_parse_field_rep(c, &st->field_rep, st->prefix.base,
-                                             &loc);
+            rc = ngx_http_v3_parse_field_rep(c, &st->field_rep, st->base, &loc);
 
             ngx_http_v3_parse_end_local(b, &loc, &st->length);
 
@@ -379,11 +384,20 @@ ngx_http_v3_parse_headers(ngx_connection_t *c, ngx_http_v3_parse_headers_t *st,
                 return rc;
             }
 
+            f = &st->field_rep.field;
+
+            rc = st->process_header(st->data, f->has_name ? &f->name : NULL,
+                                    f->has_value ? &f->value : NULL,
+                                    f->index, f->dynamic);
+            if (rc != NGX_OK) {
+                return rc;
+            }
+
             if (st->length == 0) {
                 goto done;
             }
 
-            return NGX_OK;
+            break;
         }
     }
 
@@ -391,14 +405,6 @@ done:
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse headers done");
 
-    if (st->prefix.insert_count > 0) {
-        if (ngx_http_v3_send_ack_section(c, c->quic->id) != NGX_OK) {
-            return NGX_ERROR;
-        }
-
-        ngx_http_v3_ack_insert_count(c, st->prefix.insert_count);
-    }
-
     st->state = sw_start;
     return NGX_DONE;
 }
@@ -468,27 +474,10 @@ ngx_http_v3_parse_field_section_prefix(ngx_connection_t *c,
 
 done:
 
-    rc = ngx_http_v3_decode_insert_count(c, &st->insert_count);
-    if (rc != NGX_OK) {
-        return rc;
-    }
-
-    if (st->sign) {
-        if (st->insert_count <= st->delta_base) {
-            ngx_log_error(NGX_LOG_INFO, c->log, 0, "client sent negative base");
-            return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED;
-        }
-
-        st->base = st->insert_count - st->delta_base - 1;
-
-    } else {
-        st->base = st->insert_count + st->delta_base;
-    }
-
-    ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0,
+    ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0,
                   "http3 parse field section prefix done "
-                  "insert_count:%ui, sign:%ui, delta_base:%ui, base:%ui",
-                  st->insert_count, st->sign, st->delta_base, st->base);
+                  "insert_count:%ui, sign:%ui, delta_base:%ui",
+                  st->insert_count, st->sign, st->delta_base);
 
     st->state = sw_start;
     return NGX_DONE;
@@ -521,9 +510,8 @@ ngx_http_v3_parse_field_rep(ngx_connection_t *c,
 
         ch = *b->pos;
 
-        ngx_memzero(&st->field, sizeof(ngx_http_v3_parse_field_t));
-
         st->field.base = base;
+        st->field.max_literal = st->max_literal;
 
         if (ch & 0x80) {
             /* Indexed Field Line */
@@ -594,9 +582,8 @@ static ngx_int_t
 ngx_http_v3_parse_literal(ngx_connection_t *c, ngx_http_v3_parse_literal_t *st,
     ngx_buf_t *b)
 {
-    u_char                     ch;
-    ngx_uint_t                 n;
-    ngx_http_core_srv_conf_t  *cscf;
+    u_char      ch;
+    ngx_uint_t  n;
     enum {
         sw_start = 0,
         sw_value
@@ -614,14 +601,6 @@ ngx_http_v3_parse_literal(ngx_connection_t *c, ngx_http_v3_parse_literal_t *st,
 
             n = st->length;
 
-            cscf = ngx_http_v3_get_module_srv_conf(c, ngx_http_core_module);
-
-            if (n > cscf->large_client_header_buffers.size) {
-                ngx_log_error(NGX_LOG_INFO, c->log, 0,
-                              "client sent too large field line");
-                return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
-            }
-
             if (st->huffman) {
                 if (n > NGX_MAX_INT_T_VALUE / 8) {
                     ngx_log_error(NGX_LOG_INFO, c->log, 0,
@@ -633,6 +612,7 @@ ngx_http_v3_parse_literal(ngx_connection_t *c, ngx_http_v3_parse_literal_t *st,
                 st->huffstate = 0;
             }
 
+            /* XXX this allocation is bad in uni streams */
             st->last = ngx_pnalloc(c->pool, n + 1);
             if (st->last == NULL) {
                 return NGX_ERROR;
@@ -656,8 +636,6 @@ ngx_http_v3_parse_literal(ngx_connection_t *c, ngx_http_v3_parse_literal_t *st,
                                          st->length == 1, c->log)
                     != NGX_OK)
                 {
-                    ngx_log_error(NGX_LOG_INFO, c->log, 0,
-                                  "client sent invalid encoded field line");
                     return NGX_ERROR;
                 }
 
@@ -734,16 +712,13 @@ done:
                    "http3 parse field ri done %s%ui]",
                    st->dynamic ? "dynamic[-" : "static[", st->index);
 
+    st->has_name = 0;
+    st->has_value = 0;
+
     if (st->dynamic) {
         st->index = st->base - st->index - 1;
     }
 
-    rc = ngx_http_v3_parse_lookup(c, st->dynamic, st->index, &st->name,
-                                  &st->value);
-    if (rc != NGX_OK) {
-        return rc;
-    }
-
     st->state = sw_start;
     return NGX_DONE;
 }
@@ -820,6 +795,11 @@ ngx_http_v3_parse_field_lri(ngx_connection_t *c,
                 goto done;
             }
 
+            if (st->literal.length > st->max_literal) {
+                ngx_log_error(NGX_LOG_INFO, c->log, 0, "field value too large");
+                return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
+            }
+
             st->state = sw_value;
             break;
 
@@ -842,15 +822,13 @@ done:
                    st->dynamic ? "dynamic[-" : "static[",
                    st->index, &st->value);
 
+    st->has_name = 0;
+    st->has_value = 1;
+
     if (st->dynamic) {
         st->index = st->base - st->index - 1;
     }
 
-    rc = ngx_http_v3_parse_lookup(c, st->dynamic, st->index, &st->name, NULL);
-    if (rc != NGX_OK) {
-        return rc;
-    }
-
     st->state = sw_start;
     return NGX_DONE;
 }
@@ -903,6 +881,11 @@ ngx_http_v3_parse_field_l(ngx_connection_t *c,
                 return NGX_ERROR;
             }
 
+            if (st->literal.length > st->max_literal) {
+                ngx_log_error(NGX_LOG_INFO, c->log, 0, "field name too large");
+                return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
+            }
+
             st->state = sw_name;
             break;
 
@@ -943,6 +926,11 @@ ngx_http_v3_parse_field_l(ngx_connection_t *c,
                 goto done;
             }
 
+            if (st->literal.length > st->max_literal) {
+                ngx_log_error(NGX_LOG_INFO, c->log, 0, "field value too large");
+                return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
+            }
+
             st->state = sw_value;
             break;
 
@@ -964,6 +952,11 @@ done:
                    "http3 parse field l done \"%V\" \"%V\"",
                    &st->name, &st->value);
 
+    st->has_name = 1;
+    st->has_value = 1;
+    st->index = 0;
+    st->dynamic = 0;
+
     st->state = sw_start;
     return NGX_DONE;
 }
@@ -1009,11 +1002,10 @@ done:
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
                    "http3 parse field pbi done dynamic[+%ui]", st->index);
 
-    rc = ngx_http_v3_parse_lookup(c, 1, st->base + st->index, &st->name,
-                                  &st->value);
-    if (rc != NGX_OK) {
-        return rc;
-    }
+    st->has_name = 0;
+    st->has_value = 0;
+    st->index += st->base;
+    st->dynamic = 1;
 
     st->state = sw_start;
     return NGX_DONE;
@@ -1084,6 +1076,11 @@ ngx_http_v3_parse_field_lpbi(ngx_connection_t *c,
                 goto done;
             }
 
+            if (st->literal.length > st->max_literal) {
+                ngx_log_error(NGX_LOG_INFO, c->log, 0, "field value too large");
+                return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
+            }
+
             st->state = sw_value;
             break;
 
@@ -1105,61 +1102,17 @@ done:
                    "http3 parse field lpbi done dynamic[+%ui] \"%V\"",
                    st->index, &st->value);
 
-    rc = ngx_http_v3_parse_lookup(c, 1, st->base + st->index, &st->name, NULL);
-    if (rc != NGX_OK) {
-        return rc;
-    }
+    st->has_name = 0;
+    st->has_value = 1;
+    st->index += st->base;
+    st->dynamic = 1;
 
     st->state = sw_start;
     return NGX_DONE;
 }
 
 
-static ngx_int_t
-ngx_http_v3_parse_lookup(ngx_connection_t *c, ngx_uint_t dynamic,
-    ngx_uint_t index, ngx_str_t *name, ngx_str_t *value)
-{
-    u_char  *p;
-
-    if (!dynamic) {
-        if (ngx_http_v3_lookup_static(c, index, name, value) != NGX_OK) {
-            return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED;
-        }
-
-        return NGX_OK;
-    }
-
-    if (ngx_http_v3_lookup(c, index, name, value) != NGX_OK) {
-        return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED;
-    }
-
-    if (name) {
-        p = ngx_pnalloc(c->pool, name->len + 1);
-        if (p == NULL) {
-            return NGX_ERROR;
-        }
-
-        ngx_memcpy(p, name->data, name->len);
-        p[name->len] = '\0';
-        name->data = p;
-    }
-
-    if (value) {
-        p = ngx_pnalloc(c->pool, value->len + 1);
-        if (p == NULL) {
-            return NGX_ERROR;
-        }
-
-        ngx_memcpy(p, value->data, value->len);
-        p[value->len] = '\0';
-        value->data = p;
-    }
-
-    return NGX_OK;
-}
-
-
-static ngx_int_t
+ngx_int_t
 ngx_http_v3_parse_control(ngx_connection_t *c, ngx_http_v3_parse_control_t *st,
     ngx_buf_t *b)
 {
@@ -1246,6 +1199,9 @@ ngx_http_v3_parse_control(ngx_connection_t *c, ngx_http_v3_parse_control_t *st,
             switch (st->type) {
 
             case NGX_HTTP_V3_FRAME_SETTINGS:
+                st->settings.set_param = st->set_param;
+                st->settings.data = st->data;
+
                 st->state = sw_settings;
                 break;
 
@@ -1335,7 +1291,7 @@ ngx_http_v3_parse_settings(ngx_connection_t *c,
                 return rc;
             }
 
-            if (ngx_http_v3_set_param(c, st->id, st->vlint.value) != NGX_OK) {
+            if (st->set_param(st->data, st->id, st->vlint.value) != NGX_OK) {
                 return NGX_HTTP_V3_ERR_SETTINGS_ERROR;
             }
 
@@ -1352,7 +1308,7 @@ done:
 }
 
 
-static ngx_int_t
+ngx_int_t
 ngx_http_v3_parse_encoder(ngx_connection_t *c, ngx_http_v3_parse_encoder_t *st,
     ngx_buf_t *b)
 {
@@ -1377,6 +1333,8 @@ ngx_http_v3_parse_encoder(ngx_connection_t *c, ngx_http_v3_parse_encoder_t *st,
                 return NGX_AGAIN;
             }
 
+            st->field.max_literal = st->max_literal;
+
             ch = *b->pos;
 
             if (ch & 0x80) {
@@ -1410,6 +1368,12 @@ ngx_http_v3_parse_encoder(ngx_connection_t *c, ngx_http_v3_parse_encoder_t *st,
                 return rc;
             }
 
+            rc = st->ref_insert(st->data, st->field.dynamic, st->field.index,
+                                &st->field.value);
+            if (rc != NGX_OK) {
+                return rc;
+            }
+
             st->state = sw_start;
             break;
 
@@ -1420,6 +1384,11 @@ ngx_http_v3_parse_encoder(ngx_connection_t *c, ngx_http_v3_parse_encoder_t *st,
                 return rc;
             }
 
+            rc = st->insert(st->data, &st->field.name, &st->field.value);
+            if (rc != NGX_OK) {
+                return rc;
+            }
+
             st->state = sw_start;
             break;
 
@@ -1430,7 +1399,7 @@ ngx_http_v3_parse_encoder(ngx_connection_t *c, ngx_http_v3_parse_encoder_t *st,
                 return rc;
             }
 
-            rc = ngx_http_v3_set_capacity(c, st->pint.value);
+            rc = st->set_capacity(st->data, st->pint.value);
             if (rc != NGX_OK) {
                 return rc;
             }
@@ -1445,7 +1414,7 @@ ngx_http_v3_parse_encoder(ngx_connection_t *c, ngx_http_v3_parse_encoder_t *st,
                 return rc;
             }
 
-            rc = ngx_http_v3_duplicate(c, st->pint.value);
+            rc = st->duplicate(st->data, st->pint.value);
             if (rc != NGX_OK) {
                 return rc;
             }
@@ -1528,6 +1497,11 @@ ngx_http_v3_parse_field_inr(ngx_connection_t *c,
                 goto done;
             }
 
+            if (st->literal.length > st->max_literal) {
+                ngx_log_error(NGX_LOG_INFO, c->log, 0, "field value too large");
+                return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
+            }
+
             st->state = sw_value;
             break;
 
@@ -1550,11 +1524,6 @@ done:
                    st->dynamic ? "dynamic" : "static",
                    st->index, &st->value);
 
-    rc = ngx_http_v3_ref_insert(c, st->dynamic, st->index, &st->value);
-    if (rc != NGX_OK) {
-        return rc;
-    }
-
     st->state = sw_start;
     return NGX_DONE;
 }
@@ -1607,6 +1576,11 @@ ngx_http_v3_parse_field_iln(ngx_connection_t *c,
                 return NGX_ERROR;
             }
 
+            if (st->literal.length > st->max_literal) {
+                ngx_log_error(NGX_LOG_INFO, c->log, 0, "field name too large");
+                return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
+            }
+
             st->state = sw_name;
             break;
 
@@ -1647,6 +1621,11 @@ ngx_http_v3_parse_field_iln(ngx_connection_t *c,
                 goto done;
             }
 
+            if (st->literal.length > st->max_literal) {
+                ngx_log_error(NGX_LOG_INFO, c->log, 0, "field value too large");
+                return NGX_HTTP_V3_ERR_EXCESSIVE_LOAD;
+            }
+
             st->state = sw_value;
             break;
 
@@ -1668,17 +1647,12 @@ done:
                    "http3 parse field iln done \"%V\":\"%V\"",
                    &st->name, &st->value);
 
-    rc = ngx_http_v3_insert(c, &st->name, &st->value);
-    if (rc != NGX_OK) {
-        return rc;
-    }
-
     st->state = sw_start;
     return NGX_DONE;
 }
 
 
-static ngx_int_t
+ngx_int_t
 ngx_http_v3_parse_decoder(ngx_connection_t *c, ngx_http_v3_parse_decoder_t *st,
     ngx_buf_t *b)
 {
@@ -1730,7 +1704,7 @@ ngx_http_v3_parse_decoder(ngx_connection_t *c, ngx_http_v3_parse_decoder_t *st,
                 return rc;
             }
 
-            rc = ngx_http_v3_ack_section(c, st->pint.value);
+            rc = st->ack_section(st->data, st->pint.value);
             if (rc != NGX_OK) {
                 return rc;
             }
@@ -1745,7 +1719,7 @@ ngx_http_v3_parse_decoder(ngx_connection_t *c, ngx_http_v3_parse_decoder_t *st,
                 return rc;
             }
 
-            rc = ngx_http_v3_cancel_stream(c, st->pint.value);
+            rc = st->cancel_stream(st->data, st->pint.value);
             if (rc != NGX_OK) {
                 return rc;
             }
@@ -1760,7 +1734,7 @@ ngx_http_v3_parse_decoder(ngx_connection_t *c, ngx_http_v3_parse_decoder_t *st,
                 return rc;
             }
 
-            rc = ngx_http_v3_inc_insert_count(c, st->pint.value);
+            rc = st->inc_insert_count(st->data, st->pint.value);
             if (rc != NGX_OK) {
                 return rc;
             }
@@ -1806,7 +1780,8 @@ ngx_http_v3_parse_data(ngx_connection_t *c, ngx_http_v3_parse_data_t *st,
             st->type = st->vlint.value;
 
             if (st->type == NGX_HTTP_V3_FRAME_HEADERS) {
-                /* trailers */
+                /* parse trailers later */
+                b->pos--;
                 goto done;
             }
 
@@ -1863,80 +1838,3 @@ done:
     st->state = sw_start;
     return NGX_DONE;
 }
-
-
-ngx_int_t
-ngx_http_v3_parse_uni(ngx_connection_t *c, ngx_http_v3_parse_uni_t *st,
-    ngx_buf_t *b)
-{
-    ngx_int_t  rc;
-    enum {
-        sw_start = 0,
-        sw_type,
-        sw_control,
-        sw_encoder,
-        sw_decoder,
-        sw_unknown
-    };
-
-    for ( ;; ) {
-
-        switch (st->state) {
-        case sw_start:
-
-            ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse uni");
-
-            st->state = sw_type;
-
-            /* fall through */
-
-        case sw_type:
-
-            rc = ngx_http_v3_parse_varlen_int(c, &st->vlint, b);
-            if (rc != NGX_DONE) {
-                return rc;
-            }
-
-            rc = ngx_http_v3_register_uni_stream(c, st->vlint.value);
-            if (rc != NGX_OK) {
-                return rc;
-            }
-
-            switch (st->vlint.value) {
-            case NGX_HTTP_V3_STREAM_CONTROL:
-                st->state = sw_control;
-                break;
-
-            case NGX_HTTP_V3_STREAM_ENCODER:
-                st->state = sw_encoder;
-                break;
-
-            case NGX_HTTP_V3_STREAM_DECODER:
-                st->state = sw_decoder;
-                break;
-
-            default:
-                st->state = sw_unknown;
-            }
-
-            break;
-
-        case sw_control:
-
-            return ngx_http_v3_parse_control(c, &st->u.control, b);
-
-        case sw_encoder:
-
-            return ngx_http_v3_parse_encoder(c, &st->u.encoder, b);
-
-        case sw_decoder:
-
-            return ngx_http_v3_parse_decoder(c, &st->u.decoder, b);
-
-        case sw_unknown:
-
-            b->pos = b->last;
-            return NGX_AGAIN;
-        }
-    }
-}
diff --git a/src/http/v3/ngx_http_v3_parse.h b/src/http/v3/ngx_http_v3_parse.h
index ba004db5d..af484093e 100644
--- a/src/http/v3/ngx_http_v3_parse.h
+++ b/src/http/v3/ngx_http_v3_parse.h
@@ -14,6 +14,31 @@
 #include <ngx_http.h>
 
 
+typedef ngx_int_t (*ngx_http_v3_process_insert_count_pt)(void *data,
+    ngx_uint_t *insert_count);
+typedef ngx_int_t (*ngx_http_v3_process_header_pt)(void *data, ngx_str_t *name,
+    ngx_str_t *value, ngx_uint_t index, ngx_uint_t dynamic);
+
+typedef ngx_int_t (*ngx_http_v3_set_param_pt)(void *data, uint64_t id,
+    uint64_t value);
+
+typedef ngx_int_t (*ngx_http_v3_ref_insert_pt)(void *data, ngx_uint_t dynamic,
+    ngx_uint_t index, ngx_str_t *value);
+typedef ngx_int_t (*ngx_http_v3_insert_pt)(void *data, ngx_str_t *name,
+    ngx_str_t *value);
+typedef ngx_int_t (*ngx_http_v3_duplicate_pt)(void *data, ngx_uint_t index);
+typedef ngx_int_t (*ngx_http_v3_set_capacity_pt)(void *data,
+    ngx_uint_t capacity);
+
+
+typedef ngx_int_t (*ngx_http_v3_ack_section_pt)(void *data,
+    ngx_uint_t stream_id);
+typedef ngx_int_t (*ngx_http_v3_cancel_stream_pt)(void *data,
+    ngx_uint_t stream_id);
+typedef ngx_int_t (*ngx_http_v3_inc_insert_count_pt)(void *data,
+    ngx_uint_t inc);
+
+
 typedef struct {
     ngx_uint_t                      state;
     uint64_t                        value;
@@ -31,6 +56,9 @@ typedef struct {
     ngx_uint_t                      state;
     uint64_t                        id;
     ngx_http_v3_parse_varlen_int_t  vlint;
+
+    ngx_http_v3_set_param_pt        set_param;
+    void                           *data;
 } ngx_http_v3_parse_settings_t;
 
 
@@ -59,18 +87,23 @@ typedef struct {
     ngx_uint_t                      index;
     ngx_uint_t                      base;
     ngx_uint_t                      dynamic;
+    ngx_uint_t                      max_literal;
 
     ngx_str_t                       name;
     ngx_str_t                       value;
 
     ngx_http_v3_parse_prefix_int_t  pint;
     ngx_http_v3_parse_literal_t     literal;
+
+    unsigned                        has_name:1;
+    unsigned                        has_value:1;
 } ngx_http_v3_parse_field_t;
 
 
 typedef struct {
     ngx_uint_t                      state;
     ngx_http_v3_parse_field_t       field;
+    ngx_uint_t                      max_literal;
 } ngx_http_v3_parse_field_rep_t;
 
 
@@ -78,22 +111,44 @@ typedef struct {
     ngx_uint_t                      state;
     ngx_uint_t                      type;
     ngx_uint_t                      length;
+    ngx_uint_t                      base;
+    ngx_uint_t                      insert_count;
     ngx_http_v3_parse_varlen_int_t  vlint;
     ngx_http_v3_parse_field_section_prefix_t  prefix;
     ngx_http_v3_parse_field_rep_t   field_rep;
+    ngx_uint_t                      max_literal;
+
+    ngx_http_v3_process_insert_count_pt
+                                    process_insert_count;
+    ngx_http_v3_process_header_pt   process_header;
+    void                           *data;
 } ngx_http_v3_parse_headers_t;
 
 
 typedef struct {
     ngx_uint_t                      state;
+    ngx_uint_t                      max_literal;
     ngx_http_v3_parse_field_t       field;
     ngx_http_v3_parse_prefix_int_t  pint;
+
+    ngx_http_v3_ref_insert_pt       ref_insert;
+    ngx_http_v3_insert_pt           insert;
+    ngx_http_v3_duplicate_pt        duplicate;
+    ngx_http_v3_set_capacity_pt     set_capacity;
+    void                           *data;
 } ngx_http_v3_parse_encoder_t;
 
 
 typedef struct {
     ngx_uint_t                      state;
+    ngx_uint_t                      max_literal;
     ngx_http_v3_parse_prefix_int_t  pint;
+
+    ngx_http_v3_ack_section_pt      ack_section;
+    ngx_http_v3_cancel_stream_pt    cancel_stream;
+    ngx_http_v3_inc_insert_count_pt
+                                    inc_insert_count;
+    void                           *data;
 } ngx_http_v3_parse_decoder_t;
 
 
@@ -101,20 +156,13 @@ typedef struct {
     ngx_uint_t                      state;
     ngx_uint_t                      type;
     ngx_uint_t                      length;
+    ngx_uint_t                      max_literal;
     ngx_http_v3_parse_varlen_int_t  vlint;
     ngx_http_v3_parse_settings_t    settings;
-} ngx_http_v3_parse_control_t;
-
 
-typedef struct {
-    ngx_uint_t                      state;
-    ngx_http_v3_parse_varlen_int_t  vlint;
-    union {
-        ngx_http_v3_parse_encoder_t  encoder;
-        ngx_http_v3_parse_decoder_t  decoder;
-        ngx_http_v3_parse_control_t  control;
-    } u;
-} ngx_http_v3_parse_uni_t;
+    ngx_http_v3_set_param_pt        set_param;
+    void                           *data;
+} ngx_http_v3_parse_control_t;
 
 
 typedef struct {
@@ -139,8 +187,15 @@ ngx_int_t ngx_http_v3_parse_headers(ngx_connection_t *c,
     ngx_http_v3_parse_headers_t *st, ngx_buf_t *b);
 ngx_int_t ngx_http_v3_parse_data(ngx_connection_t *c,
     ngx_http_v3_parse_data_t *st, ngx_buf_t *b);
-ngx_int_t ngx_http_v3_parse_uni(ngx_connection_t *c,
-    ngx_http_v3_parse_uni_t *st, ngx_buf_t *b);
+
+ngx_int_t ngx_http_v3_parse_varlen_int(ngx_connection_t *c,
+    ngx_http_v3_parse_varlen_int_t *st, ngx_buf_t *b);
+ngx_int_t ngx_http_v3_parse_control(ngx_connection_t *c,
+    ngx_http_v3_parse_control_t *st, ngx_buf_t *b);
+ngx_int_t ngx_http_v3_parse_encoder(ngx_connection_t *c,
+    ngx_http_v3_parse_encoder_t *st, ngx_buf_t *b);
+ngx_int_t ngx_http_v3_parse_decoder(ngx_connection_t *c,
+    ngx_http_v3_parse_decoder_t *st, ngx_buf_t *b);
 
 
 #endif /* _NGX_HTTP_V3_PARSE_H_INCLUDED_ */
diff --git a/src/http/v3/ngx_http_v3_proxy_module.c b/src/http/v3/ngx_http_v3_proxy_module.c
new file mode 100644
index 000000000..71e5abc38
--- /dev/null
+++ b/src/http/v3/ngx_http_v3_proxy_module.c
@@ -0,0 +1,1773 @@
+
+/*
+ * Copyright (C) Roman Arutyunyan
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+#include <ngx_http_proxy_module.h>
+
+
+typedef struct {
+    ngx_http_proxy_ctx_t          ctx;
+    ngx_http_v3_parse_headers_t   parse_headers;
+    ngx_http_v3_parse_data_t      parse_data;
+    off_t                         body_received;
+    ngx_uint_t                    pseudo_done; /* unsigned  pseudo_done:1; */
+} ngx_http_v3_proxy_ctx_t;
+
+
+static ngx_int_t ngx_http_v3_proxy_create_request(ngx_http_request_t *r);
+static ngx_int_t ngx_http_v3_proxy_create_stream(ngx_http_request_t *r);
+static void ngx_http_v3_proxy_quic_handler(ngx_connection_t *c);
+static ngx_int_t ngx_http_v3_proxy_handle_quic_connection(ngx_connection_t *c);
+static ngx_int_t ngx_http_v3_proxy_reinit_request(ngx_http_request_t *r);
+static ngx_int_t ngx_http_v3_proxy_body_output_filter(void *data,
+     ngx_chain_t *in);
+static ngx_int_t ngx_http_v3_proxy_process_response(ngx_http_request_t *r);
+static ngx_int_t ngx_http_v3_proxy_process_header(void *data,
+    ngx_str_t *name, ngx_str_t *value, ngx_uint_t index, ngx_uint_t dynamic);
+static ngx_int_t ngx_http_v3_proxy_process_insert_count(void *data,
+    ngx_uint_t *insert_count);
+static ngx_int_t ngx_http_v3_proxy_input_filter_init(void *data);
+static ngx_int_t ngx_http_v3_proxy_body_filter(ngx_event_pipe_t *p,
+    ngx_buf_t *buf);
+static ngx_int_t ngx_http_v3_proxy_non_buffered_body_filter(void *data,
+    ssize_t bytes);
+static ngx_int_t ngx_http_v3_proxy_process_trailer(ngx_http_request_t *r,
+    ngx_buf_t *buf);
+static void ngx_http_v3_proxy_abort_request(ngx_http_request_t *r);
+static void ngx_http_v3_proxy_finalize_request(ngx_http_request_t *r,
+    ngx_int_t rc);
+
+
+ngx_module_t  ngx_http_v3_proxy_module;
+
+
+static ngx_http_module_t  ngx_http_v3_proxy_module_ctx = {
+    NULL,                                  /* preconfiguration */
+    NULL,                                  /* postconfiguration */
+
+    NULL,                                  /* create main configuration */
+    NULL,                                  /* init main configuration */
+
+    NULL,                                  /* create server configuration */
+    NULL,                                  /* merge server configuration */
+
+    NULL,                                  /* create location configuration */
+    NULL                                   /* merge location configuration */
+};
+
+
+ngx_module_t  ngx_http_v3_proxy_module = {
+    NGX_MODULE_V1,
+    &ngx_http_v3_proxy_module_ctx,         /* module context */
+    NULL,                                  /* module directives */
+    NGX_HTTP_MODULE,                       /* module type */
+    NULL,                                  /* init master */
+    NULL,                                  /* init module */
+    NULL,                                  /* init process */
+    NULL,                                  /* init thread */
+    NULL,                                  /* exit thread */
+    NULL,                                  /* exit process */
+    NULL,                                  /* exit master */
+    NGX_MODULE_V1_PADDING
+};
+
+
+ngx_int_t
+ngx_http_v3_proxy_handler(ngx_http_request_t *r)
+{
+    ngx_int_t                     rc;
+    ngx_http_upstream_t          *u;
+    ngx_http_v3_proxy_ctx_t      *ctx;
+    ngx_http_proxy_loc_conf_t    *plcf;
+#if (NGX_HTTP_CACHE)
+    ngx_http_proxy_main_conf_t   *pmcf;
+#endif
+    ngx_http_v3_parse_headers_t  *st;
+
+    if (ngx_http_upstream_create(r) != NGX_OK) {
+        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+    }
+
+    plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
+
+    if (!plcf->ssl) {
+        ngx_log_error(NGX_LOG_EMERG, r->connection->log, 0,
+                      "unsupported \"http\" scheme");
+        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+    }
+
+    ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_v3_proxy_ctx_t));
+    if (ctx == NULL) {
+        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+    }
+
+    st = &ctx->parse_headers;
+    st->max_literal = plcf->upstream.buffer_size;
+    st->process_insert_count = ngx_http_v3_proxy_process_insert_count;
+    st->process_header = ngx_http_v3_proxy_process_header;
+    st->data = r;
+
+    ngx_http_set_ctx(r, ctx, ngx_http_v3_proxy_module);
+
+    ngx_http_set_ctx(r, &ctx->ctx, ngx_http_proxy_module);
+
+    u = r->upstream;
+
+    if (plcf->proxy_lengths == NULL) {
+        ctx->ctx.vars = plcf->vars;
+        u->schema = plcf->vars.schema;
+        u->ssl = 1;
+
+    } else {
+        if (ngx_http_proxy_eval(r, &ctx->ctx, plcf) != NGX_OK) {
+            return NGX_HTTP_INTERNAL_SERVER_ERROR;
+        }
+
+        if (!u->ssl) {
+            ngx_log_error(NGX_LOG_EMERG, r->connection->log, 0,
+                          "unsupported \"http\" scheme");
+            return NGX_HTTP_INTERNAL_SERVER_ERROR;
+        }
+    }
+
+    ngx_str_set(&u->ssl_alpn_protocol, NGX_HTTP_V3_ALPN_PROTO);
+
+    u->output.tag = (ngx_buf_tag_t) &ngx_http_proxy_module;
+
+    u->conf = &plcf->upstream;
+
+#if (NGX_HTTP_CACHE)
+    pmcf = ngx_http_get_module_main_conf(r, ngx_http_proxy_module);
+
+    u->caches = &pmcf->caches;
+    u->create_key = ngx_http_proxy_create_key;
+#endif
+
+    u->create_request = ngx_http_v3_proxy_create_request;
+    u->create_stream = ngx_http_v3_proxy_create_stream;
+    u->reinit_request = ngx_http_v3_proxy_reinit_request;
+    u->process_header = ngx_http_v3_proxy_process_response;
+    u->abort_request = ngx_http_v3_proxy_abort_request;
+    u->finalize_request = ngx_http_v3_proxy_finalize_request;
+    r->state = 0;
+
+    if (plcf->redirects) {
+        u->rewrite_redirect = ngx_http_proxy_rewrite_redirect;
+    }
+
+    if (plcf->cookie_domains || plcf->cookie_paths || plcf->cookie_flags) {
+        u->rewrite_cookie = ngx_http_proxy_rewrite_cookie;
+    }
+
+    u->buffering = plcf->upstream.buffering;
+
+    u->pipe = ngx_pcalloc(r->pool, sizeof(ngx_event_pipe_t));
+    if (u->pipe == NULL) {
+        return NGX_HTTP_INTERNAL_SERVER_ERROR;
+    }
+
+    u->pipe->input_filter = ngx_http_v3_proxy_body_filter;
+    u->pipe->input_ctx = r;
+
+    u->input_filter_init = ngx_http_v3_proxy_input_filter_init;
+    u->input_filter = ngx_http_v3_proxy_non_buffered_body_filter;
+    u->input_filter_ctx = r;
+
+    u->accel = 1;
+    u->quic = 1;
+    u->peer.type = SOCK_DGRAM;
+
+    if (!plcf->upstream.request_buffering
+        && plcf->body_values == NULL && plcf->upstream.pass_request_body)
+    {
+        r->request_body_no_buffering = 1;
+    }
+
+    rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init);
+
+    if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
+        return rc;
+    }
+
+    return NGX_DONE;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_create_request(ngx_http_request_t *r)
+{
+    u_char                       *p, *key, *val;
+    size_t                        len, uri_len, loc_len, header_len, body_len,
+                                  key_len, val_len;
+    uintptr_t                     escape;
+    ngx_buf_t                    *b;
+    ngx_str_t                     method, *host;
+    ngx_uint_t                    i, unparsed_uri, internal_chunked;
+    ngx_chain_t                  *cl, *body;
+    ngx_list_part_t              *part;
+    ngx_table_elt_t              *header;
+    ngx_http_upstream_t          *u;
+    ngx_http_v3_proxy_ctx_t      *ctx;
+    ngx_http_script_code_pt       code;
+    ngx_http_proxy_headers_t     *headers;
+    ngx_http_script_engine_t      e, le;
+    ngx_http_proxy_loc_conf_t    *plcf;
+    ngx_http_script_len_code_pt   lcode;
+
+    u = r->upstream;
+
+    plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
+
+#if (NGX_HTTP_CACHE)
+    headers = u->cacheable ? &plcf->headers_cache : &plcf->headers;
+#else
+    headers = &plcf->headers;
+#endif
+
+    if (u->method.len) {
+        /* HEAD was changed to GET to cache response */
+        method = u->method;
+
+    } else if (plcf->method) {
+        if (ngx_http_complex_value(r, plcf->method, &method) != NGX_OK) {
+            return NGX_ERROR;
+        }
+
+    } else {
+        method = r->method_name;
+    }
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    len = ngx_http_v3_encode_field_section_prefix(NULL, 0, 0, 0);
+
+    /* :method header */
+
+    if (method.len == 4
+        && ngx_strncasecmp(method.data, (u_char *) "HEAD", 4) == 0)
+    {
+        ctx->ctx.head = 1;
+
+        len += ngx_http_v3_encode_field_ri(NULL, 0,
+                                           NGX_HTTP_V3_HEADER_METHOD_HEAD);
+
+    } else if (method.len == sizeof("GET") - 1
+               && ngx_strncasecmp(method.data, (u_char *) "GET", 3) == 0)
+    {
+        len += ngx_http_v3_encode_field_ri(NULL, 0,
+                                           NGX_HTTP_V3_HEADER_METHOD_GET);
+
+    } else if (method.len == sizeof("POST") - 1
+               && ngx_strncasecmp(method.data, (u_char *) "POST", 4) == 0)
+    {
+        len += ngx_http_v3_encode_field_ri(NULL, 0,
+                                           NGX_HTTP_V3_HEADER_METHOD_POST);
+
+    } else if (method.len == sizeof("PUT") - 1
+               && ngx_strncasecmp(method.data, (u_char *) "PUT", 3) == 0)
+    {
+        len += ngx_http_v3_encode_field_ri(NULL, 0,
+                                           NGX_HTTP_V3_HEADER_METHOD_PUT);
+
+    } else {
+        len += ngx_http_v3_encode_field_lri(NULL, 0,
+                                           NGX_HTTP_V3_HEADER_METHOD_GET,
+                                           NULL, method.len);
+    }
+
+    /* :scheme header */
+
+    len += ngx_http_v3_encode_field_ri(NULL, 0,
+                                       NGX_HTTP_V3_HEADER_SCHEME_HTTPS);
+
+    /* :path header */
+
+    escape = 0;
+    loc_len = 0;
+    unparsed_uri = 0;
+    internal_chunked = 0;
+
+    if (plcf->proxy_lengths && ctx->ctx.vars.uri.len) {
+        uri_len = ctx->ctx.vars.uri.len;
+
+    } else if (ctx->ctx.vars.uri.len == 0 && r->valid_unparsed_uri) {
+        unparsed_uri = 1;
+        uri_len = r->unparsed_uri.len;
+
+    } else {
+        loc_len = (r->valid_location && ctx->ctx.vars.uri.len)
+                  ? ngx_min(plcf->location.len, r->uri.len) : 0;
+
+        if (r->quoted_uri || r->internal) {
+            escape = 2 * ngx_escape_uri(NULL, r->uri.data + loc_len,
+                                        r->uri.len - loc_len, NGX_ESCAPE_URI);
+        }
+
+        uri_len = ctx->ctx.vars.uri.len + r->uri.len - loc_len + escape
+                  + sizeof("?") - 1 + r->args.len;
+    }
+
+    if (uri_len == 0) {
+        ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                      "zero length URI to proxy");
+        return NGX_ERROR;
+    }
+
+    len += ngx_http_v3_encode_field_lri(NULL, 0, NGX_HTTP_V3_HEADER_PATH_ROOT,
+                                        NULL, uri_len);
+
+    /* :authority header */
+
+    host = &ctx->ctx.vars.host_header;
+
+    if (!plcf->host_set) {
+        len += ngx_http_v3_encode_field_lri(NULL, 0,
+                                            NGX_HTTP_V3_HEADER_AUTHORITY,
+                                            NULL, host->len);
+    }
+
+    /* other headers */
+
+    ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
+
+    ngx_http_script_flush_no_cacheable_variables(r, plcf->body_flushes);
+    ngx_http_script_flush_no_cacheable_variables(r, headers->flushes);
+
+    body_len = 0;
+
+    if (plcf->body_lengths) {
+        le.ip = plcf->body_lengths->elts;
+        le.request = r;
+        le.flushed = 1;
+
+        while (*(uintptr_t *) le.ip) {
+            lcode = *(ngx_http_script_len_code_pt *) le.ip;
+            body_len += lcode(&le);
+        }
+
+        ctx->ctx.internal_body_length = body_len;
+
+        len += ngx_http_v3_encode_varlen_int(NULL, NGX_HTTP_V3_FRAME_DATA);
+        len += ngx_http_v3_encode_varlen_int(NULL, body_len);
+
+    } else if (r->headers_in.chunked && r->reading_body) {
+        ctx->ctx.internal_body_length = -1;
+        internal_chunked = 1;
+
+    } else {
+        ctx->ctx.internal_body_length = r->headers_in.content_length_n;
+
+        len += ngx_http_v3_encode_varlen_int(NULL, NGX_HTTP_V3_FRAME_DATA);
+        len += ngx_http_v3_encode_varlen_int(NULL,
+                                                ctx->ctx.internal_body_length);
+    }
+
+
+    le.ip = headers->lengths->elts;
+    le.request = r;
+    le.flushed = 1;
+
+    while (*(uintptr_t *) le.ip) {
+
+        lcode = *(ngx_http_script_len_code_pt *) le.ip;
+        key_len = lcode(&le);
+
+        for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
+            lcode = *(ngx_http_script_len_code_pt *) le.ip;
+        }
+        le.ip += sizeof(uintptr_t);
+
+        if (val_len == 0) {
+            continue;
+        }
+
+        len += ngx_http_v3_encode_field_l(NULL, NULL, key_len, NULL, val_len)
+               * 2;
+    }
+
+    if (plcf->upstream.pass_request_headers) {
+        part = &r->headers_in.headers.part;
+        header = part->elts;
+
+        for (i = 0; /* void */; i++) {
+
+            if (i >= part->nelts) {
+                if (part->next == NULL) {
+                    break;
+                }
+
+                part = part->next;
+                header = part->elts;
+                i = 0;
+            }
+
+            if (ngx_hash_find(&headers->hash, header[i].hash,
+                              header[i].lowcase_key, header[i].key.len))
+            {
+                continue;
+            }
+
+            len += ngx_http_v3_encode_field_l(NULL, NULL, header[i].key.len,
+                                              NULL, header[i].value.len);
+        }
+    }
+
+    header_len = len;
+
+    len += ngx_http_v3_encode_varlen_int(NULL, NGX_HTTP_V3_FRAME_HEADERS)
+          + ngx_http_v3_encode_varlen_int(NULL, header_len);
+
+    b = ngx_create_temp_buf(r->pool, len);
+    if (b == NULL) {
+        return NGX_ERROR;
+    }
+
+    cl = ngx_alloc_chain_link(r->pool);
+    if (cl == NULL) {
+        return NGX_ERROR;
+    }
+
+    cl->buf = b;
+
+    b->last += ngx_http_v3_encode_varlen_int(NULL, NGX_HTTP_V3_FRAME_HEADERS)
+               + ngx_http_v3_encode_varlen_int(NULL, header_len);
+
+    p = b->last;
+
+    b->last = (u_char *) ngx_http_v3_encode_field_section_prefix(b->last,
+                                                                 0, 0, 0);
+
+    if (method.len == 4
+        && ngx_strncasecmp(method.data, (u_char *) "HEAD", 4) == 0)
+    {
+        b->last = (u_char *) ngx_http_v3_encode_field_ri(b->last, 0,
+                                                NGX_HTTP_V3_HEADER_METHOD_HEAD);
+
+        ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http proxy header: \":method: HEAD\"");
+
+    } else if (method.len == sizeof("GET") - 1
+               && ngx_strncasecmp(method.data, (u_char *) "GET", 3) == 0)
+    {
+        b->last = (u_char *) ngx_http_v3_encode_field_ri(b->last, 0,
+                                                NGX_HTTP_V3_HEADER_METHOD_GET);
+
+        ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http proxy header: \":method: GET\"");
+
+    } else if (method.len == sizeof("POST") - 1
+               && ngx_strncasecmp(method.data, (u_char *) "POST", 4) == 0)
+    {
+        b->last = (u_char *) ngx_http_v3_encode_field_ri(b->last, 0,
+                                                NGX_HTTP_V3_HEADER_METHOD_POST);
+
+        ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http proxy header: \":method: POST\"");
+
+    } else if (method.len == sizeof("PUT") - 1
+               && ngx_strncasecmp(method.data, (u_char *) "PUT", 3) == 0)
+    {
+        b->last = (u_char *) ngx_http_v3_encode_field_ri(b->last, 0,
+                                                NGX_HTTP_V3_HEADER_METHOD_PUT);
+
+        ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http proxy header: \":method: PUT\"");
+
+    } else {
+        b->last = (u_char *) ngx_http_v3_encode_field_lri(b->last, 0,
+                                                NGX_HTTP_V3_HEADER_METHOD_GET,
+                                                method.data, method.len);
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http proxy header: \":method: %V\"", &method);
+    }
+
+    b->last = (u_char *) ngx_http_v3_encode_field_ri(b->last, 0,
+                                              NGX_HTTP_V3_HEADER_SCHEME_HTTPS);
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http proxy header: \":scheme: https\"");
+
+    b->last = (u_char *) ngx_http_v3_encode_field_lri(b->last, 0,
+                                                NGX_HTTP_V3_HEADER_PATH_ROOT,
+                                                NULL, uri_len);
+    u->uri.data = b->last;
+
+    if (plcf->proxy_lengths && ctx->ctx.vars.uri.len) {
+        b->last = ngx_copy(b->last, ctx->ctx.vars.uri.data,
+                           ctx->ctx.vars.uri.len);
+
+    } else if (unparsed_uri) {
+        b->last = ngx_copy(b->last, r->unparsed_uri.data, r->unparsed_uri.len);
+
+    } else {
+        if (r->valid_location) {
+            b->last = ngx_copy(b->last, ctx->ctx.vars.uri.data,
+                               ctx->ctx.vars.uri.len);
+        }
+
+        if (escape) {
+            ngx_escape_uri(b->last, r->uri.data + loc_len,
+                           r->uri.len - loc_len, NGX_ESCAPE_URI);
+            b->last += r->uri.len - loc_len + escape;
+
+        } else {
+            b->last = ngx_copy(b->last, r->uri.data + loc_len,
+                               r->uri.len - loc_len);
+        }
+
+        if (r->args.len > 0) {
+            *b->last++ = '?';
+            b->last = ngx_copy(b->last, r->args.data, r->args.len);
+        }
+    }
+
+    u->uri.len = b->last - u->uri.data;
+
+    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http proxy header: \":path: %V\"", &u->uri);
+
+    if (!plcf->host_set) {
+        b->last = (u_char *) ngx_http_v3_encode_field_lri(b->last, 0,
+                                                NGX_HTTP_V3_HEADER_AUTHORITY,
+                                                host->data, host->len);
+
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http proxy header: \":authority: %V\"", host);
+    }
+
+    ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
+
+    e.ip = headers->values->elts;
+    e.pos = b->last;
+    e.request = r;
+    e.flushed = 1;
+
+    le.ip = headers->lengths->elts;
+
+    while (*(uintptr_t *) le.ip) {
+
+        lcode = *(ngx_http_script_len_code_pt *) le.ip;
+        key_len = lcode(&le);
+
+        for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) {
+            lcode = *(ngx_http_script_len_code_pt *) le.ip;
+        }
+        le.ip += sizeof(uintptr_t);
+
+        if (val_len == 0) {
+            e.skip = 1;
+
+            while (*(uintptr_t *) e.ip) {
+                code = *(ngx_http_script_code_pt *) e.ip;
+                code((ngx_http_script_engine_t *) &e);
+            }
+            e.ip += sizeof(uintptr_t);
+
+            e.skip = 0;
+
+            continue;
+        }
+
+        e.pos += ngx_http_v3_encode_field_l(NULL, NULL, key_len, NULL, val_len);
+        key = e.pos;
+
+        code = *(ngx_http_script_code_pt *) e.ip;
+        code((ngx_http_script_engine_t *) &e);
+
+        val = e.pos;
+
+        while (*(uintptr_t *) e.ip) {
+            code = *(ngx_http_script_code_pt *) e.ip;
+            code((ngx_http_script_engine_t *) &e);
+        }
+        e.ip += sizeof(uintptr_t);
+
+        b->last = (u_char *) ngx_http_v3_encode_field_l(b->last, key, key_len,
+                                                        val, val_len);
+        e.pos = b->last;
+    }
+
+    b->last = e.pos;
+
+
+    if (plcf->upstream.pass_request_headers) {
+        part = &r->headers_in.headers.part;
+        header = part->elts;
+
+        for (i = 0; /* void */; i++) {
+
+            if (i >= part->nelts) {
+                if (part->next == NULL) {
+                    break;
+                }
+
+                part = part->next;
+                header = part->elts;
+                i = 0;
+            }
+
+            if (ngx_hash_find(&headers->hash, header[i].hash,
+                              header[i].lowcase_key, header[i].key.len))
+            {
+                continue;
+            }
+
+            b->last = (u_char *) ngx_http_v3_encode_field_l(b->last,
+                                    header[i].key.data, header[i].key.len,
+                                    header[i].value.data, header[i].value.len);
+
+            ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                           "http3 proxy header: \"%V: %V\"",
+                           &header[i].key, &header[i].value);
+        }
+    }
+
+    len = b->last - p;
+    b->pos += (ngx_http_v3_encode_varlen_int(NULL, header_len)
+               - ngx_http_v3_encode_varlen_int(NULL, len));
+    p = (u_char *) ngx_http_v3_encode_varlen_int(b->pos,
+                                                 NGX_HTTP_V3_FRAME_HEADERS);
+    (void) ngx_http_v3_encode_varlen_int(p, len);
+
+    if (plcf->body_values) {
+        b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last,
+                                                       NGX_HTTP_V3_FRAME_DATA);
+        b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last, body_len);
+
+        e.ip = plcf->body_values->elts;
+        e.pos = b->last;
+        e.skip = 0;
+
+        while (*(uintptr_t *) e.ip) {
+            code = *(ngx_http_script_code_pt *) e.ip;
+            code((ngx_http_script_engine_t *) &e);
+        }
+
+        b->last = e.pos;
+    }
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http3 proxy header:%N\"%*xs\"",
+                   (size_t) (b->last - b->pos), b->pos);
+
+    if (r->request_body_no_buffering) {
+
+        u->request_bufs = cl;
+
+        if (internal_chunked) {
+            u->output.output_filter = ngx_http_v3_proxy_body_output_filter;
+            u->output.filter_ctx = r;
+
+        } else {
+            b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last,
+                                                NGX_HTTP_V3_FRAME_DATA);
+            b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last,
+                                                ctx->ctx.internal_body_length);
+        }
+
+    } else if (plcf->body_values == NULL && plcf->upstream.pass_request_body) {
+
+        body = u->request_bufs;
+        body_len = 0;
+
+        while (body) {
+            body_len += ngx_buf_size(body->buf);
+            body = body->next;
+        }
+
+        body = u->request_bufs;
+        u->request_bufs = cl;
+
+        len = ngx_http_v3_encode_varlen_int(NULL, NGX_HTTP_V3_FRAME_DATA)
+              + ngx_http_v3_encode_varlen_int(NULL, body_len);
+
+        b = ngx_create_temp_buf(r->pool, len);
+        if (b == NULL) {
+            return NGX_ERROR;
+        }
+
+        b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last,
+                                                   NGX_HTTP_V3_FRAME_DATA);
+        b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last, body_len);
+
+        cl->next = ngx_alloc_chain_link(r->pool);
+        if (cl->next == NULL) {
+            return NGX_ERROR;
+        }
+
+        cl = cl->next;
+        cl->buf = b;
+
+        while (body) {
+            b = ngx_alloc_buf(r->pool);
+            if (b == NULL) {
+                return NGX_ERROR;
+            }
+
+            ngx_memcpy(b, body->buf, sizeof(ngx_buf_t));
+
+            cl->next = ngx_alloc_chain_link(r->pool);
+            if (cl->next == NULL) {
+                return NGX_ERROR;
+            }
+
+            cl = cl->next;
+            cl->buf = b;
+
+            body = body->next;
+        }
+
+    } else {
+        u->request_bufs = cl;
+    }
+
+    b->flush = 1;
+    cl->next = NULL;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_create_stream(ngx_http_request_t *r)
+{
+    ngx_log_t              *log;
+    ngx_connection_t       *c, *sc;
+    ngx_http_upstream_t    *u;
+    ngx_http_v3_session_t  *h3c;
+
+    u = r->upstream;
+    c = u->peer.connection;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 proxy create stream");
+
+    c->ssl->handler = ngx_http_v3_proxy_quic_handler;
+
+    if (ngx_http_v3_init_session(c) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    h3c = ngx_http_v3_get_session(c);
+    h3c->max_literal = u->conf->buffer_size;
+
+    /*
+     * h3c->max_table_capacity = 0;
+     * h3c->max_blocked_streams = 0;
+     */
+
+    if (ngx_http_v3_send_settings(c) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    log = ngx_palloc(c->pool, sizeof(ngx_log_t));
+    if (log == NULL) {
+        return NGX_ERROR;
+    }
+
+    /* XXX */
+    *log = r->connection->listening->log;
+    log->connection = c->number;
+
+    /* XXX do not create log here */
+    sc = ngx_quic_open_stream(c, 1);
+    if (sc == NULL) {
+        return NGX_ERROR;
+    }
+
+    sc->log = c->log;
+    sc->pool->log = sc->log;
+    sc->read->log = sc->log;
+    sc->write->log = sc->log;
+
+    /* QUIC connection may outlive client connection */
+
+    c->log = log;
+    c->pool->log = c->log;
+    c->read->log = c->log;
+    c->write->log = c->log;
+
+    sc->data = r;
+
+    sc->requests++;
+    c->requests++;
+
+    if (c->read->timer_set) {
+        ngx_del_timer(c->read);
+    }
+
+    u->peer.connection = sc;
+    u->writer.connection = sc;
+
+    if (ngx_http_v3_proxy_handle_quic_connection(c) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    return NGX_OK;
+}
+
+
+static void
+ngx_http_v3_proxy_quic_handler(ngx_connection_t *c)
+{
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 proxy handler");
+
+    if (c->close) {
+        ngx_http_v3_close_connection(c);
+        return;
+    }
+
+    if (ngx_http_v3_proxy_handle_quic_connection(c) != NGX_OK) {
+        ngx_http_v3_close_connection(c);
+    }
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_handle_quic_connection(ngx_connection_t *c)
+{
+    ngx_connection_t  *sc;
+
+    if (c->read->timedout) {
+        ngx_quic_set_app_error(c, NGX_HTTP_V3_ERR_NO_ERROR,
+                               "keepalive shutdown");
+        return NGX_DONE;
+    }
+
+    while (!ngx_quic_get_error(c)) {
+
+        sc = ngx_quic_accept_stream(c);
+        if (sc == NULL) {
+            break;
+        }
+
+        if (!(sc->quic->stream->id & NGX_QUIC_STREAM_UNIDIRECTIONAL)) {
+            ngx_log_error(NGX_LOG_INFO, c->log, 0,
+                          "upstream opened a quic bidi stream");
+            return NGX_ERROR;
+        }
+
+        ngx_http_v3_init_uni_stream(sc);
+    }
+
+    if (ngx_quic_has_streams(c, 1, 1) == NGX_DECLINED) {
+        ngx_quic_set_app_error(c, NGX_HTTP_V3_ERR_NO_ERROR, "shutdown");
+        return NGX_DONE;
+    }
+
+    if (ngx_quic_get_error(c)) {
+        return NGX_ERROR;
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_reinit_request(ngx_http_request_t *r)
+{
+    ngx_http_v3_proxy_ctx_t  *ctx;
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    if (ctx == NULL) {
+        return NGX_OK;
+    }
+
+    ctx->pseudo_done = 0;
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_body_output_filter(void *data, ngx_chain_t *in)
+{
+    ngx_http_request_t  *r = data;
+
+    off_t                  size;
+    size_t                 len;
+    u_char                *chunk;
+    ngx_int_t              rc;
+    ngx_buf_t             *b;
+    ngx_chain_t           *out, *cl, *tl, **ll, **fl;
+    ngx_http_proxy_ctx_t  *ctx;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http3 proxy output filter");
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    if (in == NULL) {
+        out = in;
+        goto out;
+    }
+
+    out = NULL;
+    ll = &out;
+
+    if (!ctx->header_sent) {
+        /* first buffer contains headers, pass it unmodified */
+
+        ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http3 proxy output header");
+
+        ctx->header_sent = 1;
+
+        tl = ngx_alloc_chain_link(r->pool);
+        if (tl == NULL) {
+            return NGX_ERROR;
+        }
+
+        tl->buf = in->buf;
+        *ll = tl;
+        ll = &tl->next;
+
+        in = in->next;
+
+        if (in == NULL) {
+            tl->next = NULL;
+            goto out;
+        }
+    }
+
+    size = 0;
+    cl = in;
+    fl = ll;
+
+    for ( ;; ) {
+        ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                       "http3 proxy output chunk: %O", ngx_buf_size(cl->buf));
+
+        size += ngx_buf_size(cl->buf);
+
+        if (cl->buf->flush
+            || cl->buf->sync
+            || ngx_buf_in_memory(cl->buf)
+            || cl->buf->in_file)
+        {
+            tl = ngx_alloc_chain_link(r->pool);
+            if (tl == NULL) {
+                return NGX_ERROR;
+            }
+
+            tl->buf = cl->buf;
+            *ll = tl;
+            ll = &tl->next;
+        }
+
+        if (cl->next == NULL) {
+            break;
+        }
+
+        cl = cl->next;
+    }
+
+    if (size) {
+        tl = ngx_chain_get_free_buf(r->pool, &ctx->free);
+        if (tl == NULL) {
+            return NGX_ERROR;
+        }
+
+        b = tl->buf;
+        chunk = b->start;
+
+        if (chunk == NULL) {
+            len = ngx_http_v3_encode_varlen_int(NULL, NGX_HTTP_V3_FRAME_DATA)
+                  + ngx_http_v3_encode_varlen_int(NULL, 0xffffffffffffffffull);
+
+            chunk = ngx_palloc(r->pool, len);
+            if (chunk == NULL) {
+                return NGX_ERROR;
+            }
+
+            b->start = chunk;
+            b->end = chunk + len;
+        }
+
+        b->tag = (ngx_buf_tag_t) &ngx_http_v3_proxy_body_output_filter;
+        b->memory = 0;
+        b->temporary = 1;
+        b->pos = chunk;
+        b->last_buf = cl->buf->last_buf;
+
+        b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last,
+                                                       NGX_HTTP_V3_FRAME_DATA);
+        b->last = (u_char *) ngx_http_v3_encode_varlen_int(b->last, size);
+
+        cl->buf->last_buf = 0;
+
+        tl->next = *fl;
+        *fl = tl;
+
+    } else if (cl->buf->last_buf) {
+
+        tl = ngx_chain_get_free_buf(r->pool, &ctx->free);
+        if (tl == NULL) {
+            return NGX_ERROR;
+        }
+
+        b = tl->buf;
+
+        b->tag = (ngx_buf_tag_t) &ngx_http_v3_proxy_body_output_filter;
+        b->temporary = 0;
+        b->memory = 0;
+        b->last_buf = 1;
+        b->pos = b->last;
+
+        cl->buf->last_buf = 0;
+
+        *ll = tl;
+    }
+
+    *ll = NULL;
+
+out:
+
+    rc = ngx_chain_writer(&r->upstream->writer, out);
+
+    ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out,
+                        (ngx_buf_tag_t) &ngx_http_v3_proxy_body_output_filter);
+
+    return rc;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_process_response(ngx_http_request_t *r)
+{
+    ngx_int_t                 rc;
+    ngx_table_elt_t          *h;
+    ngx_connection_t         *c;
+    ngx_http_upstream_t      *u;
+    ngx_http_v3_proxy_ctx_t  *ctx;
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    if (ctx == NULL) {
+        return NGX_ERROR;
+    }
+
+    c = r->connection;
+    u = r->upstream;
+
+    rc = ngx_http_v3_parse_headers(c, &ctx->parse_headers, &u->buffer);
+
+    if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
+        return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+    }
+
+    if (rc > 0) {
+        if (u->peer.connection) {
+            ngx_quic_reset_stream(u->peer.connection, rc);
+            ngx_log_error(NGX_LOG_ERR, c->log, 0,
+                          "upstream sent invalid header");
+        }
+
+        return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+    }
+
+    /* XXX flood check */
+
+    if (rc != NGX_DONE) {
+        return rc;
+    }
+
+    /* a whole header has been parsed successfully */
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 proxy header done");
+
+    if (u->headers_in.status_n == 0) {
+        return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+    }
+
+    if (u->headers_in.status_n == NGX_HTTP_EARLY_HINTS) {
+        ctx->pseudo_done = 0;
+        return NGX_HTTP_UPSTREAM_EARLY_HINTS;
+    }
+
+    /*
+     * if no "Server" and "Date" in header line,
+     * then add the special empty headers
+     */
+
+    if (r->upstream->headers_in.server == NULL) {
+        h = ngx_list_push(&r->upstream->headers_in.headers);
+        if (h == NULL) {
+            return NGX_ERROR;
+        }
+
+        h->hash = ngx_hash(ngx_hash(ngx_hash(ngx_hash(
+                            ngx_hash('s', 'e'), 'r'), 'v'), 'e'), 'r');
+
+        ngx_str_set(&h->key, "Server");
+        ngx_str_null(&h->value);
+        h->lowcase_key = (u_char *) "server";
+        h->next = NULL;
+    }
+
+    if (r->upstream->headers_in.date == NULL) {
+        h = ngx_list_push(&r->upstream->headers_in.headers);
+        if (h == NULL) {
+            return NGX_ERROR;
+        }
+
+        h->hash = ngx_hash(ngx_hash(ngx_hash('d', 'a'), 't'), 'e');
+
+        ngx_str_set(&h->key, "Date");
+        ngx_str_null(&h->value);
+        h->lowcase_key = (u_char *) "date";
+        h->next = NULL;
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_process_header(void *data, ngx_str_t *name, ngx_str_t *value,
+    ngx_uint_t index, ngx_uint_t dynamic)
+{
+    ngx_http_request_t  *r = data;
+
+    ngx_int_t                       rc;
+    ngx_str_t                       namet, valuet;
+    ngx_table_elt_t                *h;
+    ngx_http_upstream_t            *u;
+    ngx_http_v3_proxy_ctx_t        *ctx;
+    ngx_http_upstream_header_t     *hh;
+    ngx_http_upstream_main_conf_t  *umcf;
+
+    if (name == NULL) {
+
+        if (dynamic) {
+            ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                          "upstream is using dynamic table");
+            return NGX_ERROR;
+        }
+
+        if (ngx_http_v3_lookup_static(r->connection, index, &namet, &valuet)
+            != NGX_OK)
+        {
+            return NGX_ERROR;
+        }
+
+        name = &namet;
+
+        if (value == NULL) {
+            value = &valuet;
+        }
+    }
+
+    umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
+
+    u = r->upstream;
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    if (name->len && name->data[0] == ':') {
+
+        if (ctx->pseudo_done) {
+            return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+        }
+
+        if (name->len == 7 && ngx_strncmp(name->data, ":status", 7)
+            == 0)
+        {
+            rc = ngx_atoi(value->data, value->len);
+
+            if (rc == NGX_ERROR) {
+                return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+            }
+
+            u->headers_in.status_n = rc;
+
+            ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                           "http3 proxy status %ui",
+                           u->headers_in.status_n);
+
+        } else {
+            ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                           "http3 proxy pseudo header: \"%V: %V\"",
+                           name, value);
+        }
+
+        return NGX_OK;
+    }
+
+    ctx->pseudo_done = 1;
+
+    h = ngx_list_push(ctx->ctx.trailers ? &r->upstream->headers_in.trailers
+                                       : &r->upstream->headers_in.headers);
+    if (h == NULL) {
+        return NGX_ERROR;
+    }
+
+    h->hash = r->header_hash;
+
+    h->key.len = name->len;
+    h->value.len = value->len;
+
+    h->key.data = ngx_pnalloc(r->pool,
+                              h->key.len + 1 + h->value.len + 1 + h->key.len);
+    if (h->key.data == NULL) {
+        h->hash = 0;
+        return NGX_ERROR;
+    }
+
+    h->value.data = h->key.data + h->key.len + 1;
+    h->lowcase_key = h->key.data + h->key.len + 1 + h->value.len + 1;
+
+    ngx_memcpy(h->key.data, name->data, h->key.len);
+    h->key.data[h->key.len] = '\0';
+    ngx_memcpy(h->value.data, value->data, h->value.len);
+    h->value.data[h->value.len] = '\0';
+
+    if (h->key.len == r->lowcase_index) {
+        ngx_memcpy(h->lowcase_key, r->lowcase_header, h->key.len);
+
+    } else {
+        ngx_strlow(h->lowcase_key, h->key.data, h->key.len);
+    }
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http3 proxy header: \"%V: %V\"",
+                   name, value);
+
+    if (u->headers_in.status_n == NGX_HTTP_EARLY_HINTS || ctx->ctx.trailers) {
+        return NGX_OK;
+    }
+
+    hh = ngx_hash_find(&umcf->headers_in_hash, h->hash,
+                       h->lowcase_key, h->key.len);
+
+    if (hh) {
+        rc = hh->handler(r, h, hh->offset);
+
+        if (rc != NGX_OK) {
+            return rc;
+        }
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_process_insert_count(void *data, ngx_uint_t *insert_count)
+{
+    ngx_http_request_t  *r = data;
+
+    ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                  "upstream is using dynamic table");
+
+    return NGX_ERROR;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_input_filter_init(void *data)
+{
+    ngx_http_request_t    *r = data;
+    ngx_http_upstream_t   *u;
+    ngx_http_proxy_ctx_t  *ctx;
+
+    u = r->upstream;
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    if (ctx == NULL) {
+        return NGX_ERROR;
+    }
+
+    ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http3 proxy filter init s:%ui h:%d l:%O",
+                   u->headers_in.status_n, ctx->head,
+                   u->headers_in.content_length_n);
+
+    /* as per RFC9110, 6.4.1. Content Semantics */
+
+    if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
+        || u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED
+        || ctx->head)
+    {
+        /* 1xx, 204, and 304 and replies to HEAD requests */
+        /* no 1xx since we don't send Expect and Upgrade */
+
+        u->pipe->length = 0;
+        u->length = 0;
+
+    } else if (u->headers_in.content_length_n == 0) {
+        /* empty body: special case as filter won't be called */
+
+        u->pipe->length = 0;
+        u->length = 0;
+
+    } else {
+        u->pipe->length = 1;
+        u->length = 1;
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_body_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
+{
+    off_t                       n;
+    ngx_int_t                   rc;
+    ngx_buf_t                  *b, **prev;
+    ngx_chain_t                *cl;
+    ngx_http_request_t         *r;
+    ngx_http_upstream_t        *u;
+    ngx_http_v3_proxy_ctx_t    *ctx;
+    ngx_http_v3_parse_data_t   *st;
+    ngx_http_proxy_loc_conf_t  *plcf;
+
+    if (buf->pos == buf->last) {
+        return NGX_OK;
+    }
+
+    r = p->input_ctx;
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    if (ctx == NULL) {
+        return NGX_ERROR;
+    }
+
+    u = r->upstream;
+
+    st = &ctx->parse_data;
+
+    if (p->upstream_done) {
+        ngx_log_debug0(NGX_LOG_DEBUG_HTTP, p->log, 0,
+                       "http3 proxy data after close");
+        return NGX_OK;
+    }
+
+    if (p->length == 0) {
+
+        ngx_log_error(NGX_LOG_WARN, p->log, 0,
+                      "upstream sent data after trailers");
+
+        p->upstream_done = 1;
+
+        return NGX_OK;
+    }
+
+    b = NULL;
+
+    if (ctx->ctx.trailers) {
+        rc = ngx_http_v3_proxy_process_trailer(r, buf);
+
+        if (rc == NGX_ERROR) {
+            return NGX_ERROR;
+        }
+
+        if (rc == NGX_OK) {
+
+            /* a whole response has been parsed successfully */
+
+            p->length = 0;
+
+            if (buf->pos != buf->last) {
+                ngx_log_error(NGX_LOG_WARN, p->log, 0,
+                              "upstream sent data after trailers");
+            }
+        }
+
+        goto free_buf;
+    }
+
+    n = r->headers_in.content_length_n;
+
+    plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
+
+    prev = &buf->shadow;
+
+    while (buf->pos < buf->last) {
+
+        if (st->length == 0) {
+            rc = ngx_http_v3_parse_data(r->connection, st, buf);
+
+            /* XXX check flood */
+
+            if (rc == NGX_AGAIN) {
+                continue;
+            }
+
+            if (rc == NGX_DONE) {
+
+                if (plcf->upstream.pass_trailers) {
+                    rc = ngx_http_v3_proxy_process_trailer(r, buf);
+
+                    if (rc == NGX_ERROR) {
+                        return NGX_ERROR;
+                    }
+
+                    if (rc == NGX_AGAIN) {
+                        p->length = 1;
+                        goto free_buf;
+                    }
+                }
+
+                p->length = 0;
+                goto free_buf;
+            }
+
+            if (rc > 0) {
+
+                if (u->peer.connection) {
+                    ngx_quic_reset_stream(u->peer.connection, rc);
+                }
+
+                ngx_log_error(NGX_LOG_ERR, p->log, 0,
+                              "upstream sent invalid body");
+                return NGX_ERROR;
+            }
+
+            if (rc == NGX_ERROR) {
+                ngx_log_error(NGX_LOG_ERR, p->log, 0,
+                              "upstream sent invalid body");
+                return NGX_ERROR;
+            }
+
+            /* rc == NGX_OK */
+        }
+
+        if (n != -1 && n - ctx->body_received < (off_t) st->length) {
+            ngx_log_error(NGX_LOG_WARN, p->log, 0,
+                          "upstream sent more data than specified in "
+                          "\"Content-Length\" header");
+            return NGX_ERROR;
+        }
+
+        cl = ngx_chain_get_free_buf(p->pool, &p->free);
+        if (cl == NULL) {
+            return NGX_ERROR;
+        }
+
+        b = cl->buf;
+
+        ngx_memzero(b, sizeof(ngx_buf_t));
+
+        b->pos = buf->pos;
+        b->start = buf->start;
+        b->end = buf->end;
+        b->tag = p->tag;
+        b->temporary = 1;
+        b->recycled = 1;
+
+        *prev = b;
+        prev = &b->shadow;
+
+        if (p->in) {
+            *p->last_in = cl;
+        } else {
+            p->in = cl;
+        }
+        p->last_in = &cl->next;
+
+        if (buf->last - buf->pos > (ssize_t) st->length) {
+            ctx->body_received += st->length;
+            buf->pos += st->length;
+            st->length = 0;
+
+        } else {
+            ctx->body_received += (buf->last - buf->pos);
+            st->length -= buf->last - buf->pos;
+            buf->pos = buf->last;
+        }
+
+        b->last = buf->pos;
+    }
+
+    if (st->length == 0) {
+
+        if (n != -1 && ctx->body_received < n) {
+            p->length = 1;
+
+        } else {
+            /* possible trailers */
+            p->length = -1;
+        }
+
+    } else {
+        p->length = st->length;
+    }
+
+free_buf:
+
+    ngx_log_debug1(NGX_LOG_DEBUG_HTTP, p->log, 0,
+                   "http3 proxy body wait length %O", p->length);
+
+    if (b) {
+        b->shadow = buf;
+        b->last_shadow = 1;
+
+        ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
+                       "input buf %p %z", b->pos, b->last - b->pos);
+
+        return NGX_OK;
+    }
+
+    /* there is no data record in the buf, add it to free chain */
+
+    if (ngx_event_pipe_add_free_buf(p, buf) != NGX_OK) {
+        return NGX_ERROR;
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_non_buffered_body_filter(void *data, ssize_t bytes)
+{
+    ngx_http_request_t   *r = data;
+
+    off_t                       n;
+    ngx_int_t                   rc;
+    ngx_buf_t                  *b, *buf;
+    ngx_chain_t                *cl, **ll;
+    ngx_http_upstream_t        *u;
+    ngx_http_v3_proxy_ctx_t    *ctx;
+    ngx_http_v3_parse_data_t   *st;
+    ngx_http_proxy_loc_conf_t  *plcf;
+
+    plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    if (ctx == NULL) {
+        return NGX_ERROR;
+    }
+
+    u = r->upstream;
+    st = &ctx->parse_data;
+
+    n = r->headers_in.content_length_n;
+
+    buf = &u->buffer;
+
+    buf->pos = buf->last;
+    buf->last += bytes;
+
+    if (ctx->ctx.trailers) {
+        rc = ngx_http_v3_proxy_process_trailer(r, buf);
+
+        if (rc == NGX_ERROR) {
+            return NGX_ERROR;
+        }
+
+        if (rc == NGX_OK) {
+
+            /* a whole response has been parsed successfully */
+
+            r->upstream->keepalive = !u->headers_in.connection_close;
+            u->length = 0;
+
+            if (buf->pos != buf->last) {
+                ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
+                              "upstream sent data after trailers");
+                u->keepalive = 0;
+            }
+        }
+
+        return NGX_OK;
+    }
+
+    for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
+        ll = &cl->next;
+    }
+
+    while (buf->pos < buf->last) {
+
+        if (st->length == 0) {
+            rc = ngx_http_v3_parse_data(r->connection, st, buf);
+
+            /* XXX check flood */
+
+            if (rc == NGX_AGAIN) {
+                continue;
+            }
+
+            if (rc == NGX_DONE) {
+
+                if (plcf->upstream.pass_trailers) {
+                    rc = ngx_http_v3_proxy_process_trailer(r, buf);
+
+                    if (rc == NGX_ERROR) {
+                        return NGX_ERROR;
+                    }
+
+                    if (rc == NGX_AGAIN) {
+                        u->length = 1;
+                        return NGX_OK;
+                    }
+                }
+
+                u->length = 0;
+                return NGX_OK;
+            }
+
+            if (rc > 0) {
+
+                if (u->peer.connection) {
+                    ngx_quic_reset_stream(u->peer.connection, rc);
+                }
+
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "upstream sent invalid body");
+                return NGX_ERROR;
+            }
+
+            if (rc == NGX_ERROR) {
+                ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                              "upstream sent invalid body");
+                return NGX_ERROR;
+            }
+
+            /* rc == NGX_OK */
+        }
+
+        if (n != -1 && n - ctx->body_received < (off_t) st->length) {
+            ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
+                          "upstream sent more data than specified in "
+                          "\"Content-Length\" header");
+            return NGX_ERROR;
+        }
+
+        cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
+        if (cl == NULL) {
+            return NGX_ERROR;
+        }
+
+        *ll = cl;
+        ll = &cl->next;
+
+        b = cl->buf;
+
+        b->flush = 1;
+        b->memory = 1;
+
+        b->pos = buf->pos;
+        b->tag = u->output.tag;
+
+        if (buf->last - buf->pos > (ssize_t) st->length) {
+            ctx->body_received += st->length;
+            buf->pos += st->length;
+            st->length = 0;
+
+        } else {
+            ctx->body_received += (buf->last - buf->pos);
+            st->length -= buf->last - buf->pos;
+            buf->pos = buf->last;
+        }
+
+        b->last = buf->pos;
+    }
+
+    if (st->length == 0) {
+
+        if (n != -1 && ctx->body_received < n) {
+            u->length = 1;
+
+        } else {
+            /* possible trailers */
+            u->length = -1;
+        }
+
+    } else {
+        u->length = st->length;
+    }
+
+    return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_http_v3_proxy_process_trailer(ngx_http_request_t *r, ngx_buf_t *buf)
+{
+    size_t                      len;
+    ngx_int_t                   rc;
+    ngx_buf_t                  *b;
+    ngx_http_upstream_t        *u;
+    ngx_http_v3_proxy_ctx_t    *ctx;
+    ngx_http_proxy_loc_conf_t  *plcf;
+
+    plcf = ngx_http_get_module_loc_conf(r, ngx_http_proxy_module);
+
+    ctx = ngx_http_get_module_ctx(r, ngx_http_v3_proxy_module);
+
+    if (ctx->ctx.trailers == NULL) {
+        ctx->ctx.trailers = ngx_create_temp_buf(r->pool,
+                                                plcf->upstream.buffer_size);
+        if (ctx->ctx.trailers == NULL) {
+            return NGX_ERROR;
+        }
+    }
+
+    u = r->upstream;
+
+    b = ctx->ctx.trailers;
+    len = ngx_min(buf->last - buf->pos, b->end - b->last);
+
+    b->last = ngx_cpymem(b->last, buf->pos, len);
+    buf->pos += len;
+
+    rc = ngx_http_v3_parse_headers(r->connection, &ctx->parse_headers, b);
+
+    if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
+        return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+    }
+
+    if (rc > 0) {
+        if (u->peer.connection) {
+            ngx_quic_reset_stream(u->peer.connection, rc);
+            ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
+                          "upstream sent invalid header");
+        }
+
+        return NGX_HTTP_UPSTREAM_INVALID_HEADER;
+    }
+
+    /* XXX flood check */
+
+    if (rc != NGX_DONE) {
+        return rc;
+    }
+
+    /* a whole trailer has been parsed successfully */
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http3 proxy trailer done");
+
+    return NGX_OK;
+}
+
+
+static void
+ngx_http_v3_proxy_abort_request(ngx_http_request_t *r)
+{
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "abort http3 proxy request");
+
+    return;
+}
+
+
+static void
+ngx_http_v3_proxy_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
+{
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "finalize http3 proxy request");
+
+    return;
+}
diff --git a/src/http/v3/ngx_http_v3_request.c b/src/http/v3/ngx_http_v3_request.c
index 6865e1466..325eeb2a2 100644
--- a/src/http/v3/ngx_http_v3_request.c
+++ b/src/http/v3/ngx_http_v3_request.c
@@ -10,13 +10,18 @@
 #include <ngx_http.h>
 
 
+static void ngx_http_v3_handshake_handler(ngx_connection_t *c);
+static ngx_int_t ngx_http_v3_init(ngx_connection_t *c);
+static void ngx_http_v3_handler(ngx_connection_t *c);
 static void ngx_http_v3_init_request_stream(ngx_connection_t *c);
 static void ngx_http_v3_wait_request_handler(ngx_event_t *rev);
 static void ngx_http_v3_cleanup_connection(void *data);
 static void ngx_http_v3_cleanup_request(void *data);
 static void ngx_http_v3_process_request(ngx_event_t *rev);
-static ngx_int_t ngx_http_v3_process_header(ngx_http_request_t *r,
-    ngx_str_t *name, ngx_str_t *value);
+static ngx_int_t ngx_http_v3_process_header(void *data,
+    ngx_str_t *name, ngx_str_t *value, ngx_uint_t index, ngx_uint_t dynamic);
+static ngx_int_t ngx_http_v3_process_insert_count(void *data,
+    ngx_uint_t *insert_count);
 static ngx_int_t ngx_http_v3_validate_header(ngx_http_request_t *r,
     ngx_str_t *name, ngx_str_t *value);
 static ngx_int_t ngx_http_v3_process_pseudo_header(ngx_http_request_t *r,
@@ -58,9 +63,11 @@ static const struct {
 void
 ngx_http_v3_init_stream(ngx_connection_t *c)
 {
+    ngx_int_t                  rc;
     ngx_http_connection_t     *hc, *phc;
     ngx_http_v3_srv_conf_t    *h3scf;
     ngx_http_core_loc_conf_t  *clcf;
+    ngx_http_core_srv_conf_t  *cscf;
 
     hc = c->data;
 
@@ -72,7 +79,25 @@ ngx_http_v3_init_stream(ngx_connection_t *c)
         h3scf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_v3_module);
         h3scf->quic.idle_timeout = clcf->keepalive_timeout;
 
-        ngx_quic_run(c, &h3scf->quic);
+        if (ngx_quic_create_connection(&h3scf->quic, c, 0) != NGX_OK) {
+            ngx_close_connection(c);
+            return;
+        }
+
+        rc = ngx_quic_handshake(c);
+
+        if (rc == NGX_AGAIN) {
+            cscf = ngx_http_get_module_srv_conf(hc->conf_ctx,
+                                                ngx_http_core_module);
+
+            ngx_add_timer(c->read, cscf->client_header_timeout);
+
+            c->ssl->handler = ngx_http_v3_handshake_handler;
+            return;
+        }
+
+        ngx_http_v3_handshake_handler(c);
+
         return;
     }
 
@@ -88,7 +113,7 @@ ngx_http_v3_init_stream(ngx_connection_t *c)
         ngx_set_connection_log(c, clcf->error_log);
     }
 
-    if (c->quic->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) {
+    if (c->quic->stream->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) {
         ngx_http_v3_init_uni_stream(c);
 
     } else  {
@@ -97,27 +122,124 @@ ngx_http_v3_init_stream(ngx_connection_t *c)
 }
 
 
-ngx_int_t
+static void
+ngx_http_v3_handshake_handler(ngx_connection_t *c)
+{
+    if (c->ssl && c->ssl->handshaked) {
+
+        if (ngx_http_v3_init(c) != NGX_OK) {
+            ngx_http_v3_close_connection(c);
+            return;
+        }
+
+        /*TODO read ALPN */
+
+        ngx_reusable_connection(c, 1);
+
+        c->ssl->handler = ngx_http_v3_handler;
+
+        ngx_http_v3_handler(c);
+
+        return;
+    }
+
+    if (c->read->timedout) {
+        ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
+    }
+
+    ngx_http_v3_close_connection(c);
+}
+
+
+static void
+ngx_http_v3_handler(ngx_connection_t *c)
+{
+    ngx_connection_t       *sc;
+    ngx_http_v3_session_t  *h3c;
+
+    h3c = ngx_http_v3_get_session(c);
+
+    if (c->close) {
+        c->close = 0;
+
+        if (!ngx_exiting) {
+            c->ssl->no_wait_shutdown = 1;
+            ngx_http_v3_close_connection(c);
+            return;
+        }
+
+        if (!h3c->goaway) {
+            h3c->goaway = 1;
+
+            if (!h3c->hq) {
+                (void) ngx_http_v3_send_goaway(c, h3c->next_request_id);
+            }
+
+            ngx_quic_reject_streams(c);
+        }
+    }
+
+    if (c->read->timedout) {
+        c->read->timedout = 0;
+
+        ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
+
+        ngx_quic_set_app_error(c, NGX_HTTP_V3_ERR_NO_ERROR,
+                               "keepalive timeout");
+        ngx_http_v3_close_connection(c);
+
+        return;
+    }
+
+    while (!ngx_quic_get_error(c)) {
+
+        sc = ngx_quic_accept_stream(c);
+        if (sc == NULL) {
+            break;
+        }
+
+        ngx_http_init_connection(sc);
+    }
+
+    if (ngx_quic_get_error(c)) {
+        ngx_http_v3_close_connection(c);
+        return;
+    }
+}
+
+
+static ngx_int_t
 ngx_http_v3_init(ngx_connection_t *c)
 {
     unsigned int               len;
     const unsigned char       *data;
+    ngx_http_connection_t     *hc;
     ngx_http_v3_session_t     *h3c;
     ngx_http_v3_srv_conf_t    *h3scf;
+    ngx_http_core_srv_conf_t  *cscf;
     ngx_http_core_loc_conf_t  *clcf;
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init");
 
+    hc = c->data;
+
     if (ngx_http_v3_init_session(c) != NGX_OK) {
         return NGX_ERROR;
     }
 
     h3c = ngx_http_v3_get_session(c);
+    h3c->data = hc;
+
     clcf = ngx_http_v3_get_module_loc_conf(c, ngx_http_core_module);
-    ngx_add_timer(&h3c->keepalive, clcf->keepalive_timeout);
+    ngx_add_timer(c->read, clcf->keepalive_timeout);
 
+    cscf = ngx_http_v3_get_module_srv_conf(c, ngx_http_core_module);
     h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module);
 
+    h3c->max_literal = cscf->large_client_header_buffers.size;
+    h3c->max_table_capacity = h3scf->max_table_capacity;
+    h3c->max_blocked_streams = h3scf->max_blocked_streams;
+
     if (h3scf->enable_hq) {
         if (!h3scf->enable) {
             h3c->hq = 1;
@@ -148,34 +270,6 @@ ngx_http_v3_init(ngx_connection_t *c)
 }
 
 
-void
-ngx_http_v3_shutdown(ngx_connection_t *c)
-{
-    ngx_http_v3_session_t  *h3c;
-
-    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 shutdown");
-
-    h3c = ngx_http_v3_get_session(c);
-
-    if (h3c == NULL) {
-        ngx_quic_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
-                                     "connection shutdown");
-        return;
-    }
-
-    if (!h3c->goaway) {
-        h3c->goaway = 1;
-
-        if (!h3c->hq) {
-            (void) ngx_http_v3_send_goaway(c, h3c->next_request_id);
-        }
-
-        ngx_http_v3_shutdown_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
-                                        "connection shutdown");
-    }
-}
-
-
 static void
 ngx_http_v3_init_request_stream(ngx_connection_t *c)
 {
@@ -197,7 +291,7 @@ ngx_http_v3_init_request_stream(ngx_connection_t *c)
 
     clcf = ngx_http_get_module_loc_conf(hc->conf_ctx, ngx_http_core_module);
 
-    n = c->quic->id >> 2;
+    n = c->quic->stream->id >> 2;
 
     if (n >= clcf->keepalive_requests * 2) {
         ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_EXCESSIVE_LOAD,
@@ -214,7 +308,7 @@ ngx_http_v3_init_request_stream(ngx_connection_t *c)
         return;
     }
 
-    h3c->next_request_id = c->quic->id + 0x04;
+    h3c->next_request_id = c->quic->stream->id + 0x04;
 
     if (n + 1 == clcf->keepalive_requests
         || ngx_current_msec - c->start_time > clcf->keepalive_time)
@@ -228,8 +322,7 @@ ngx_http_v3_init_request_stream(ngx_connection_t *c)
             }
         }
 
-        ngx_http_v3_shutdown_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
-                                        "reached maximum number of requests");
+        ngx_quic_reject_streams(c->quic->stream->parent);
     }
 
     cln = ngx_pool_cleanup_add(c->pool, 0);
@@ -243,8 +336,8 @@ ngx_http_v3_init_request_stream(ngx_connection_t *c)
 
     h3c->nrequests++;
 
-    if (h3c->keepalive.timer_set) {
-        ngx_del_timer(&h3c->keepalive);
+    if (c->quic->stream->parent->read->timer_set) {
+        ngx_del_timer(c->quic->stream->parent->read);
     }
 
     rev = c->read;
@@ -274,14 +367,15 @@ ngx_http_v3_init_request_stream(ngx_connection_t *c)
 static void
 ngx_http_v3_wait_request_handler(ngx_event_t *rev)
 {
-    size_t                     size;
-    ssize_t                    n;
-    ngx_buf_t                 *b;
-    ngx_connection_t          *c;
-    ngx_pool_cleanup_t        *cln;
-    ngx_http_request_t        *r;
-    ngx_http_connection_t     *hc;
-    ngx_http_core_srv_conf_t  *cscf;
+    size_t                        size;
+    ssize_t                       n;
+    ngx_buf_t                    *b;
+    ngx_connection_t             *c;
+    ngx_pool_cleanup_t           *cln;
+    ngx_http_request_t           *r;
+    ngx_http_connection_t        *hc;
+    ngx_http_core_srv_conf_t     *cscf;
+    ngx_http_v3_parse_headers_t  *st;
 
     c = rev->data;
 
@@ -370,6 +464,7 @@ ngx_http_v3_wait_request_handler(ngx_event_t *rev)
     c->log->action = "reading client request";
 
     ngx_reusable_connection(c, 0);
+    ngx_reusable_connection(c->quic->stream->parent, 0);
 
     r = ngx_http_create_request(c);
     if (r == NULL) {
@@ -388,8 +483,15 @@ ngx_http_v3_wait_request_handler(ngx_event_t *rev)
     r->v3_parse->header_limit = cscf->large_client_header_buffers.size
                                 * cscf->large_client_header_buffers.num;
 
+    st = &r->v3_parse->headers;
+
+    st->max_literal = cscf->large_client_header_buffers.size;
+    st->process_insert_count = ngx_http_v3_process_insert_count;
+    st->process_header = ngx_http_v3_process_header;
+    st->data = r;
+
     c->data = r;
-    c->requests = (c->quic->id >> 2) + 1;
+    c->requests = (c->quic->stream->id >> 2) + 1;
 
     cln = ngx_pool_cleanup_add(r->pool, 0);
     if (cln == NULL) {
@@ -414,9 +516,9 @@ ngx_http_v3_reset_stream(ngx_connection_t *c)
 
     if (!c->read->eof && !h3c->hq
         && h3c->known_streams[NGX_HTTP_V3_STREAM_SERVER_DECODER]
-        && (c->quic->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) == 0)
+        && (c->quic->stream->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) == 0)
     {
-        (void) ngx_http_v3_send_cancel_stream(c, c->quic->id);
+        (void) ngx_http_v3_send_cancel_stream(c, c->quic->stream->id);
     }
 
     if (c->timedout) {
@@ -436,15 +538,27 @@ ngx_http_v3_cleanup_connection(void *data)
 {
     ngx_connection_t  *c = data;
 
+    ngx_connection_t          *pc;
     ngx_http_v3_session_t     *h3c;
     ngx_http_core_loc_conf_t  *clcf;
 
     h3c = ngx_http_v3_get_session(c);
 
-    if (--h3c->nrequests == 0) {
-        clcf = ngx_http_v3_get_module_loc_conf(c, ngx_http_core_module);
-        ngx_add_timer(&h3c->keepalive, clcf->keepalive_timeout);
+    if (--h3c->nrequests) {
+        return;
+    }
+
+    if (h3c->goaway) {
+        ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
+                                        "keepalive shutdown");
+        return;
     }
+
+    clcf = ngx_http_v3_get_module_loc_conf(c, ngx_http_core_module);
+
+    pc = c->quic->stream->parent;
+    ngx_add_timer(pc->read, clcf->keepalive_timeout);
+    ngx_reusable_connection(pc, 1);
 }
 
 
@@ -484,10 +598,10 @@ ngx_http_v3_process_request(ngx_event_t *rev)
         return;
     }
 
-    h3c = ngx_http_v3_get_session(c);
-
     st = &r->v3_parse->headers;
 
+    h3c = ngx_http_v3_get_session(c);
+
     b = r->header_in;
 
     for ( ;; ) {
@@ -549,6 +663,10 @@ ngx_http_v3_process_request(ngx_event_t *rev)
             break;
         }
 
+        if (rc == NGX_ABORT) {
+            break;
+        }
+
         r->request_length += b->pos - p;
         h3c->total_bytes += b->pos - p;
 
@@ -576,24 +694,19 @@ ngx_http_v3_process_request(ngx_event_t *rev)
             break;
         }
 
-        if (rc == NGX_AGAIN) {
-            continue;
-        }
-
-        /* rc == NGX_OK || rc == NGX_DONE */
+        if (rc == NGX_DONE) {
 
-        h3c->payload_bytes += ngx_http_v3_encode_field_l(NULL,
-                                                   &st->field_rep.field.name,
-                                                   &st->field_rep.field.value);
+            if (st->insert_count > 0) {
+                if (ngx_http_v3_send_ack_section(c, c->quic->stream->id)
+                    != NGX_OK)
+                {
+                    ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+                    break;
+                }
 
-        if (ngx_http_v3_process_header(r, &st->field_rep.field.name,
-                                       &st->field_rep.field.value)
-            != NGX_OK)
-        {
-            break;
-        }
+                ngx_http_v3_ack_insert_count(c, st->insert_count);
+            }
 
-        if (rc == NGX_DONE) {
             if (ngx_http_v3_process_request_header(r) != NGX_OK) {
                 break;
             }
@@ -601,6 +714,8 @@ ngx_http_v3_process_request(ngx_event_t *rev)
             ngx_http_process_request(r);
             break;
         }
+
+        /* rc == NGX_AGAIN */
     }
 
     ngx_http_run_posted_requests(c);
@@ -610,31 +725,83 @@ ngx_http_v3_process_request(ngx_event_t *rev)
 
 
 static ngx_int_t
-ngx_http_v3_process_header(ngx_http_request_t *r, ngx_str_t *name,
-    ngx_str_t *value)
+ngx_http_v3_process_header(void *data, ngx_str_t *name, ngx_str_t *value,
+    ngx_uint_t index, ngx_uint_t dynamic)
 {
+    ngx_http_request_t  *r = data;
+
+    u_char                     *p;
     size_t                      len;
+    ngx_str_t                   namet, valuet;
     ngx_table_elt_t            *h;
+    ngx_connection_t           *c;
     ngx_http_header_t          *hh;
+    ngx_http_v3_session_t      *h3c;
     ngx_http_core_srv_conf_t   *cscf;
     ngx_http_core_main_conf_t  *cmcf;
 
     static ngx_str_t cookie = ngx_string("cookie");
 
+    c = r->connection;
+    h3c = ngx_http_v3_get_session(c);
+
+    if (name == NULL) {
+
+        if (dynamic) {
+
+            if (ngx_http_v3_lookup(c, index, &namet, &valuet) != NGX_OK) {
+                return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED;
+            }
+
+            p = ngx_pstrdup(c->pool, &namet);
+            if (p == NULL) {
+                return NGX_ERROR;
+            }
+
+            namet.data = p;
+            name = &namet;
+
+            if (value == NULL) {
+                p = ngx_pstrdup(r->pool, &valuet);
+                if (p == NULL) {
+                    return NGX_ERROR;
+                }
+
+                valuet.data = p;
+                value = &valuet;
+            }
+
+        } else {
+            if (ngx_http_v3_lookup_static(c, index, &namet, &valuet) != NGX_OK)
+            {
+                return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED;
+            }
+
+            name = &namet;
+
+            if (value == NULL) {
+                value = &valuet;
+            }
+        }
+    }
+
+    h3c->payload_bytes += ngx_http_v3_encode_field_l(NULL,
+                               name->data, name->len, value->data, value->len);
+
     len = name->len + value->len;
 
     if (len > r->v3_parse->header_limit) {
         ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
                       "client sent too large header");
         ngx_http_finalize_request(r, NGX_HTTP_REQUEST_HEADER_TOO_LARGE);
-        return NGX_ERROR;
+        return NGX_ABORT;
     }
 
     r->v3_parse->header_limit -= len;
 
     if (ngx_http_v3_validate_header(r, name, value) != NGX_OK) {
         ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
-        return NGX_ERROR;
+        return NGX_ABORT;
     }
 
     if (r->invalid_header) {
@@ -653,21 +820,19 @@ ngx_http_v3_process_header(ngx_http_request_t *r, ngx_str_t *name,
     }
 
     if (ngx_http_v3_init_pseudo_headers(r) != NGX_OK) {
-        return NGX_ERROR;
+        return NGX_ABORT;
     }
 
     if (name->len == cookie.len
         && ngx_memcmp(name->data, cookie.data, cookie.len) == 0)
     {
         if (ngx_http_v3_cookie(r, value) != NGX_OK) {
-            ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
             return NGX_ERROR;
         }
 
     } else {
         h = ngx_list_push(&r->headers_in.headers);
         if (h == NULL) {
-            ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
             return NGX_ERROR;
         }
 
@@ -682,7 +847,7 @@ ngx_http_v3_process_header(ngx_http_request_t *r, ngx_str_t *name,
                            h->lowcase_key, h->key.len);
 
         if (hh && hh->handler(r, h, hh->offset) != NGX_OK) {
-            return NGX_ERROR;
+            return NGX_ABORT;
         }
     }
 
@@ -692,6 +857,32 @@ ngx_http_v3_process_header(ngx_http_request_t *r, ngx_str_t *name,
 }
 
 
+static ngx_int_t
+ngx_http_v3_process_insert_count(void *data, ngx_uint_t *insert_count)
+{
+    ngx_http_request_t *r = data;
+
+    ngx_int_t   rc;
+    ngx_uint_t  n;
+
+    n = *insert_count;
+
+    rc = ngx_http_v3_decode_insert_count(r->connection, &n);
+    if (rc != NGX_OK) {
+        return rc;
+    }
+
+    rc = ngx_http_v3_check_insert_count(r->connection, n);
+    if (rc != NGX_OK) {
+        return rc;
+    }
+
+    *insert_count = n;
+
+    return NGX_OK;
+}
+
+
 static ngx_int_t
 ngx_http_v3_validate_header(ngx_http_request_t *r, ngx_str_t *name,
     ngx_str_t *value)
@@ -893,7 +1084,7 @@ ngx_http_v3_process_pseudo_header(ngx_http_request_t *r, ngx_str_t *name,
 failed:
 
     ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
-    return NGX_ERROR;
+    return NGX_ABORT;
 }
 
 
diff --git a/src/http/v3/ngx_http_v3_table.c b/src/http/v3/ngx_http_v3_table.c
index 428e7326b..7cf33c755 100644
--- a/src/http/v3/ngx_http_v3_table.c
+++ b/src/http/v3/ngx_http_v3_table.c
@@ -284,16 +284,14 @@ ngx_http_v3_set_capacity(ngx_connection_t *c, ngx_uint_t capacity)
     ngx_uint_t                     max, prev_max;
     ngx_http_v3_field_t          **elts;
     ngx_http_v3_session_t         *h3c;
-    ngx_http_v3_srv_conf_t        *h3scf;
     ngx_http_v3_dynamic_table_t   *dt;
 
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
                    "http3 set capacity %ui", capacity);
 
     h3c = ngx_http_v3_get_session(c);
-    h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module);
 
-    if (capacity > h3scf->max_table_capacity) {
+    if (capacity > h3c->max_table_capacity) {
         ngx_log_error(NGX_LOG_INFO, c->log, 0,
                       "client exceeded http3_max_table_capacity limit");
         return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR;
@@ -508,7 +506,6 @@ ngx_http_v3_decode_insert_count(ngx_connection_t *c, ngx_uint_t *insert_count)
 {
     ngx_uint_t                    max_entries, full_range, max_value,
                                   max_wrapped, req_insert_count;
-    ngx_http_v3_srv_conf_t       *h3scf;
     ngx_http_v3_session_t        *h3c;
     ngx_http_v3_dynamic_table_t  *dt;
 
@@ -521,9 +518,7 @@ ngx_http_v3_decode_insert_count(ngx_connection_t *c, ngx_uint_t *insert_count)
     h3c = ngx_http_v3_get_session(c);
     dt = &h3c->table;
 
-    h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module);
-
-    max_entries = h3scf->max_table_capacity / 32;
+    max_entries = h3c->max_table_capacity / 32;
     full_range = 2 * max_entries;
 
     if (*insert_count > full_range) {
@@ -563,7 +558,6 @@ ngx_http_v3_check_insert_count(ngx_connection_t *c, ngx_uint_t insert_count)
     ngx_pool_cleanup_t           *cln;
     ngx_http_v3_block_t          *block;
     ngx_http_v3_session_t        *h3c;
-    ngx_http_v3_srv_conf_t       *h3scf;
     ngx_http_v3_dynamic_table_t  *dt;
 
     h3c = ngx_http_v3_get_session(c);
@@ -605,9 +599,7 @@ ngx_http_v3_check_insert_count(ngx_connection_t *c, ngx_uint_t insert_count)
     }
 
     if (block->queue.prev == NULL) {
-        h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module);
-
-        if (h3c->nblocked == h3scf->max_blocked_streams) {
+        if (h3c->nblocked == h3c->max_blocked_streams) {
             ngx_log_error(NGX_LOG_INFO, c->log, 0,
                           "client exceeded http3_max_blocked_streams limit");
 
@@ -618,7 +610,7 @@ ngx_http_v3_check_insert_count(ngx_connection_t *c, ngx_uint_t insert_count)
         }
 
         h3c->nblocked++;
-        ngx_queue_insert_tail(&h3c->blocked, &block->queue);
+        ngx_queue_insert_tail(&h3c->queue, &block->queue);
     }
 
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
@@ -669,8 +661,8 @@ ngx_http_v3_new_entry(ngx_connection_t *c)
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
                    "http3 new dynamic entry, blocked:%ui", h3c->nblocked);
 
-    while (!ngx_queue_empty(&h3c->blocked)) {
-        q = ngx_queue_head(&h3c->blocked);
+    while (!ngx_queue_empty(&h3c->queue)) {
+        q = ngx_queue_head(&h3c->queue);
         block = (ngx_http_v3_block_t *) q;
         bc = block->connection;
 
diff --git a/src/http/v3/ngx_http_v3_table.h b/src/http/v3/ngx_http_v3_table.h
index 1c2fb17b9..b7485931c 100644
--- a/src/http/v3/ngx_http_v3_table.h
+++ b/src/http/v3/ngx_http_v3_table.h
@@ -14,6 +14,29 @@
 #include <ngx_http.h>
 
 
+/* static table indices */
+#define NGX_HTTP_V3_HEADER_AUTHORITY                 0
+#define NGX_HTTP_V3_HEADER_PATH_ROOT                 1
+#define NGX_HTTP_V3_HEADER_CONTENT_LENGTH_ZERO       4
+#define NGX_HTTP_V3_HEADER_DATE                      6
+#define NGX_HTTP_V3_HEADER_LAST_MODIFIED             10
+#define NGX_HTTP_V3_HEADER_LOCATION                  12
+#define NGX_HTTP_V3_HEADER_METHOD_GET                17
+#define NGX_HTTP_V3_HEADER_METHOD_HEAD               18
+#define NGX_HTTP_V3_HEADER_METHOD_POST               20
+#define NGX_HTTP_V3_HEADER_METHOD_PUT                21
+#define NGX_HTTP_V3_HEADER_SCHEME_HTTP               22
+#define NGX_HTTP_V3_HEADER_SCHEME_HTTPS              23
+#define NGX_HTTP_V3_HEADER_STATUS_103                24
+#define NGX_HTTP_V3_HEADER_STATUS_200                25
+#define NGX_HTTP_V3_HEADER_ACCEPT_ENCODING           31
+#define NGX_HTTP_V3_HEADER_CONTENT_TYPE_TEXT_PLAIN   53
+#define NGX_HTTP_V3_HEADER_VARY_ACCEPT_ENCODING      59
+#define NGX_HTTP_V3_HEADER_ACCEPT_LANGUAGE           72
+#define NGX_HTTP_V3_HEADER_SERVER                    92
+#define NGX_HTTP_V3_HEADER_USER_AGENT                95
+
+
 typedef struct {
     ngx_str_t                     name;
     ngx_str_t                     value;
diff --git a/src/http/v3/ngx_http_v3_uni.c b/src/http/v3/ngx_http_v3_uni.c
index 302064b8b..a05e3e706 100644
--- a/src/http/v3/ngx_http_v3_uni.c
+++ b/src/http/v3/ngx_http_v3_uni.c
@@ -10,24 +10,38 @@
 #include <ngx_http.h>
 
 
+typedef ngx_int_t (*ngx_http_v3_uni_parse_pt)(ngx_connection_t *c,
+    void *data, ngx_buf_t *b);
+
+
 typedef struct {
-    ngx_http_v3_parse_uni_t         parse;
-    ngx_int_t                       index;
+    ngx_http_v3_uni_parse_pt   parse;
+    void                      *data;
+    ngx_int_t                  index;
 } ngx_http_v3_uni_stream_t;
 
 
+static ngx_int_t ngx_http_v3_uni_parse_type(ngx_connection_t *c, void *data,
+    ngx_buf_t *b);
+static ngx_int_t ngx_http_v3_parse_unknown(ngx_connection_t *c, void *data,
+    ngx_buf_t *b);
 static void ngx_http_v3_close_uni_stream(ngx_connection_t *c);
+static ngx_int_t ngx_http_v3_register_uni_stream(ngx_connection_t *c,
+    uint64_t type);
 static void ngx_http_v3_uni_read_handler(ngx_event_t *rev);
 static void ngx_http_v3_uni_dummy_read_handler(ngx_event_t *wev);
 static void ngx_http_v3_uni_dummy_write_handler(ngx_event_t *wev);
+static ngx_int_t ngx_http_v3_cancel_stream(ngx_connection_t *c,
+    ngx_uint_t stream_id);
 
 
 void
 ngx_http_v3_init_uni_stream(ngx_connection_t *c)
 {
-    uint64_t                   n;
-    ngx_http_v3_session_t     *h3c;
-    ngx_http_v3_uni_stream_t  *us;
+    uint64_t                         n;
+    ngx_http_v3_session_t           *h3c;
+    ngx_http_v3_uni_stream_t        *us;
+    ngx_http_v3_parse_varlen_int_t  *st;
 
     h3c = ngx_http_v3_get_session(c);
     if (h3c->hq) {
@@ -41,7 +55,7 @@ ngx_http_v3_init_uni_stream(ngx_connection_t *c)
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init uni stream");
 
-    n = c->quic->id >> 2;
+    n = c->quic->stream->id >> 2;
 
     if (n >= NGX_HTTP_V3_MAX_UNI_STREAMS) {
         ngx_http_v3_finalize_connection(c,
@@ -52,8 +66,6 @@ ngx_http_v3_init_uni_stream(ngx_connection_t *c)
         return;
     }
 
-    ngx_quic_cancelable_stream(c);
-
     us = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_uni_stream_t));
     if (us == NULL) {
         ngx_http_v3_finalize_connection(c,
@@ -66,8 +78,20 @@ ngx_http_v3_init_uni_stream(ngx_connection_t *c)
 
     us->index = -1;
 
-    c->data = us;
+    st = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_varlen_int_t));
+    if (st == NULL) {
+        ngx_http_v3_finalize_connection(c,
+                                        NGX_HTTP_V3_ERR_INTERNAL_ERROR,
+                                        "memory allocation error");
+        c->data = NULL;
+        ngx_http_v3_close_uni_stream(c);
+        return;
+    }
 
+    us->parse = ngx_http_v3_uni_parse_type;
+    us->data = st;
+
+    c->data = us;
     c->read->handler = ngx_http_v3_uni_read_handler;
     c->write->handler = ngx_http_v3_uni_dummy_write_handler;
 
@@ -75,6 +99,107 @@ ngx_http_v3_init_uni_stream(ngx_connection_t *c)
 }
 
 
+static ngx_int_t
+ngx_http_v3_uni_parse_type(ngx_connection_t *c, void *data, ngx_buf_t *b)
+{
+    ngx_http_v3_parse_varlen_int_t  *st = data;
+
+    ngx_int_t                     rc;
+    ngx_http_v3_session_t        *h3c;
+    ngx_http_v3_uni_stream_t     *us;
+    ngx_http_v3_parse_control_t  *stc;
+    ngx_http_v3_parse_encoder_t  *ste;
+    ngx_http_v3_parse_decoder_t  *std;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 parse uni");
+
+    us = c->data;
+
+    rc = ngx_http_v3_parse_varlen_int(c, st, b);
+    if (rc != NGX_DONE) {
+        return rc;
+    }
+
+    rc = ngx_http_v3_register_uni_stream(c, st->value);
+    if (rc != NGX_OK) {
+        return rc;
+    }
+
+    h3c = ngx_http_v3_get_session(c);
+
+    switch (st->value) {
+
+    case NGX_HTTP_V3_STREAM_CONTROL:
+        stc = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_control_t));
+        if (stc == NULL) {
+            return NGX_ERROR;
+        }
+
+        stc->set_param = (ngx_http_v3_set_param_pt) ngx_http_v3_set_param;
+        stc->data = c;
+        stc->max_literal = h3c->max_literal;
+
+        us->parse = (ngx_http_v3_uni_parse_pt) ngx_http_v3_parse_control;
+        us->data = stc;
+
+        break;
+
+    case NGX_HTTP_V3_STREAM_ENCODER:
+        ste = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_encoder_t));
+        if (ste == NULL) {
+            return NGX_ERROR;
+        }
+
+        ste->ref_insert = (ngx_http_v3_ref_insert_pt) ngx_http_v3_ref_insert;
+        ste->insert = (ngx_http_v3_insert_pt) ngx_http_v3_insert;
+        ste->duplicate = (ngx_http_v3_duplicate_pt) ngx_http_v3_duplicate;
+        ste->set_capacity =
+                        (ngx_http_v3_set_capacity_pt) ngx_http_v3_set_capacity;
+        ste->data = c;
+        ste->max_literal = h3c->max_literal;
+
+        us->parse = (ngx_http_v3_uni_parse_pt) ngx_http_v3_parse_encoder;
+        us->data = ste;
+
+        break;
+
+    case NGX_HTTP_V3_STREAM_DECODER:
+        std = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_parse_decoder_t));
+        if (std == NULL) {
+            return NGX_ERROR;
+        }
+
+        std->ack_section = (ngx_http_v3_ack_section_pt) ngx_http_v3_ack_section;
+        std->cancel_stream =
+                      (ngx_http_v3_cancel_stream_pt) ngx_http_v3_cancel_stream;
+        std->inc_insert_count =
+                (ngx_http_v3_inc_insert_count_pt) ngx_http_v3_inc_insert_count;
+        std->data = c;
+        std->max_literal = h3c->max_literal;
+
+        us->parse = (ngx_http_v3_uni_parse_pt) ngx_http_v3_parse_decoder;
+        us->data = std;
+
+        break;
+
+    default:
+        us->parse = (ngx_http_v3_uni_parse_pt) ngx_http_v3_parse_unknown;
+        us->data = NULL;
+    }
+
+    return us->parse(c, us->data, b);
+}
+
+
+static ngx_int_t
+ngx_http_v3_parse_unknown(ngx_connection_t *c, void *data, ngx_buf_t *b)
+{
+    b->pos = b->last;
+
+    return NGX_AGAIN;
+}
+
+
 static void
 ngx_http_v3_close_uni_stream(ngx_connection_t *c)
 {
@@ -101,7 +226,7 @@ ngx_http_v3_close_uni_stream(ngx_connection_t *c)
 }
 
 
-ngx_int_t
+static ngx_int_t
 ngx_http_v3_register_uni_stream(ngx_connection_t *c, uint64_t type)
 {
     ngx_int_t                  index;
@@ -224,7 +349,7 @@ ngx_http_v3_uni_read_handler(ngx_event_t *rev)
             return;
         }
 
-        rc = ngx_http_v3_parse_uni(c, &us->parse, &b);
+        rc = us->parse(c, us->data, &b);
 
         if (rc == NGX_DONE) {
             ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
@@ -342,8 +467,6 @@ ngx_http_v3_get_uni_stream(ngx_connection_t *c, ngx_uint_t type)
         goto failed;
     }
 
-    ngx_quic_cancelable_stream(sc);
-
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
                    "http3 create uni stream, type:%ui", type);
 
@@ -393,11 +516,10 @@ failed:
 ngx_int_t
 ngx_http_v3_send_settings(ngx_connection_t *c)
 {
-    u_char                  *p, buf[NGX_HTTP_V3_VARLEN_INT_LEN * 6];
-    size_t                   n;
-    ngx_connection_t        *cc;
-    ngx_http_v3_session_t   *h3c;
-    ngx_http_v3_srv_conf_t  *h3scf;
+    u_char                 *p, buf[NGX_HTTP_V3_VARLEN_INT_LEN * 6];
+    size_t                  n;
+    ngx_connection_t       *cc;
+    ngx_http_v3_session_t  *h3c;
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 send settings");
 
@@ -406,26 +528,25 @@ ngx_http_v3_send_settings(ngx_connection_t *c)
         return NGX_ERROR;
     }
 
-    h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module);
+    h3c = ngx_http_v3_get_session(c);
 
     n = ngx_http_v3_encode_varlen_int(NULL,
                                       NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY);
-    n += ngx_http_v3_encode_varlen_int(NULL, h3scf->max_table_capacity);
+    n += ngx_http_v3_encode_varlen_int(NULL, h3c->max_table_capacity);
     n += ngx_http_v3_encode_varlen_int(NULL, NGX_HTTP_V3_PARAM_BLOCKED_STREAMS);
-    n += ngx_http_v3_encode_varlen_int(NULL, h3scf->max_blocked_streams);
+    n += ngx_http_v3_encode_varlen_int(NULL, h3c->max_blocked_streams);
 
     p = (u_char *) ngx_http_v3_encode_varlen_int(buf,
                                                  NGX_HTTP_V3_FRAME_SETTINGS);
     p = (u_char *) ngx_http_v3_encode_varlen_int(p, n);
     p = (u_char *) ngx_http_v3_encode_varlen_int(p,
                                          NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY);
-    p = (u_char *) ngx_http_v3_encode_varlen_int(p, h3scf->max_table_capacity);
+    p = (u_char *) ngx_http_v3_encode_varlen_int(p, h3c->max_table_capacity);
     p = (u_char *) ngx_http_v3_encode_varlen_int(p,
                                             NGX_HTTP_V3_PARAM_BLOCKED_STREAMS);
-    p = (u_char *) ngx_http_v3_encode_varlen_int(p, h3scf->max_blocked_streams);
+    p = (u_char *) ngx_http_v3_encode_varlen_int(p, h3c->max_blocked_streams);
     n = p - buf;
 
-    h3c = ngx_http_v3_get_session(c);
     h3c->total_bytes += n;
 
     if (cc->send(cc, buf, n) != (ssize_t) n) {
@@ -610,7 +731,7 @@ failed:
 }
 
 
-ngx_int_t
+static ngx_int_t
 ngx_http_v3_cancel_stream(ngx_connection_t *c, ngx_uint_t stream_id)
 {
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
diff --git a/src/http/v3/ngx_http_v3_uni.h b/src/http/v3/ngx_http_v3_uni.h
index 280589469..b424509c6 100644
--- a/src/http/v3/ngx_http_v3_uni.h
+++ b/src/http/v3/ngx_http_v3_uni.h
@@ -15,9 +15,6 @@
 
 
 void ngx_http_v3_init_uni_stream(ngx_connection_t *c);
-ngx_int_t ngx_http_v3_register_uni_stream(ngx_connection_t *c, uint64_t type);
-
-ngx_int_t ngx_http_v3_cancel_stream(ngx_connection_t *c, ngx_uint_t stream_id);
 
 ngx_connection_t *ngx_http_v3_get_uni_stream(ngx_connection_t *c,
     ngx_uint_t type);