diff --git a/src/event/quic/ngx_event_quic.c b/src/event/quic/ngx_event_quic.c
index a1abd26..9b342d7 100644
--- a/src/event/quic/ngx_event_quic.c
+++ b/src/event/quic/ngx_event_quic.c
@@ -15,8 +15,7 @@ static ngx_quic_connection_t *ngx_quic_new_connection(ngx_connection_t *c,
 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_close_timer_handler(ngx_event_t *ev);
+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);
@@ -73,7 +72,7 @@ ngx_quic_connstate_dbg(ngx_connection_t *c)
 
     if (qc) {
 
-        if (qc->error) {
+        if (qc->error != (ngx_uint_t) -1) {
             p = ngx_slprintf(p, last, "%s", qc->error_app ? " app" : "");
             p = ngx_slprintf(p, last, " error:%ui", qc->error);
 
@@ -276,17 +275,18 @@ ngx_quic_new_connection(ngx_connection_t *c, ngx_quic_conf_t *conf,
     qc->pto.log = c->log;
     qc->pto.data = c;
     qc->pto.handler = ngx_quic_pto_handler;
-    qc->pto.cancelable = 1;
 
     qc->push.log = c->log;
     qc->push.data = c;
     qc->push.handler = ngx_quic_push_handler;
-    qc->push.cancelable = 1;
+
+    qc->close.log = c->log;
+    qc->close.data = c;
+    qc->close.handler = ngx_quic_close_handler;
 
     qc->path_validation.log = c->log;
     qc->path_validation.data = c;
     qc->path_validation.handler = ngx_quic_path_validation_handler;
-    qc->path_validation.cancelable = 1;
 
     qc->conf = conf;
 
@@ -337,6 +337,9 @@ ngx_quic_new_connection(ngx_connection_t *c, ngx_quic_conf_t *conf,
         return NULL;
     }
 
+    c->idle = 1;
+    ngx_reusable_connection(c, 1);
+
     ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
                    "quic connection created");
 
@@ -414,23 +417,26 @@ ngx_quic_input_handler(ngx_event_t *rev)
     }
 
     if (c->close) {
-        qc->error_reason = "graceful shutdown";
-        ngx_quic_close_connection(c, NGX_OK);
-        return;
-    }
+        c->close = 0;
 
-    if (!rev->ready) {
-        if (qc->closing) {
-            ngx_quic_close_connection(c, NGX_OK);
+        if (!ngx_exiting) {
+            qc->error = NGX_QUIC_ERR_NO_ERROR;
+            qc->error_reason = "graceful shutdown";
+            ngx_quic_close_connection(c, NGX_ERROR);
+            return;
+        }
 
-        } else if (qc->shutdown) {
-            ngx_quic_shutdown_quic(c);
+        if (!qc->closing && qc->conf->shutdown) {
+            qc->conf->shutdown(c);
         }
 
         return;
     }
 
     b = c->udp->buffer;
+    if (b == NULL) {
+        return;
+    }
 
     rc = ngx_quic_handle_datagram(c, b, NULL);
 
@@ -506,31 +512,21 @@ ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
             qc->error_level = c->ssl ? SSL_quic_read_level(c->ssl->connection)
                                      : ssl_encryption_initial;
 
+            if (qc->error == (ngx_uint_t) -1) {
+                qc->error = NGX_QUIC_ERR_INTERNAL_ERROR;
+                qc->error_app = 0;
+            }
+
+            ngx_log_debug5(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                           "quic close immediate term:%d drain:%d "
+                           "%serror:%ui \"%s\"",
+                           rc == NGX_ERROR ? 1 : 0, qc->draining,
+                           qc->error_app ? "app " : "", qc->error,
+                           qc->error_reason ? qc->error_reason : "");
+
             if (rc == NGX_OK) {
-                ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                               "quic close immediate drain:%d",
-                               qc->draining);
-
-                qc->close.log = c->log;
-                qc->close.data = c;
-                qc->close.handler = ngx_quic_close_timer_handler;
-                qc->close.cancelable = 1;
-
                 ctx = ngx_quic_get_send_ctx(qc, qc->error_level);
-
                 ngx_add_timer(&qc->close, 3 * ngx_quic_pto(c, ctx));
-
-                qc->error = NGX_QUIC_ERR_NO_ERROR;
-
-            } else {
-                if (qc->error == 0 && !qc->error_app) {
-                    qc->error = NGX_QUIC_ERR_INTERNAL_ERROR;
-                }
-
-                ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                               "quic close immediate due to %serror: %ui %s",
-                               qc->error_app ? "app " : "", qc->error,
-                               qc->error_reason ? qc->error_reason : "");
             }
 
             (void) ngx_quic_send_cc(c);
@@ -574,6 +570,10 @@ ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc)
         return;
     }
 
+    if (qc->close.posted) {
+        ngx_delete_posted_event(&qc->close);
+    }
+
     ngx_quic_close_sockets(c);
 
     ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "quic close completed");
@@ -612,12 +612,17 @@ ngx_quic_finalize_connection(ngx_connection_t *c, ngx_uint_t err,
     ngx_quic_connection_t  *qc;
 
     qc = ngx_quic_get_connection(c);
+
+    if (qc->closing) {
+        return;
+    }
+
     qc->error = err;
     qc->error_reason = reason;
     qc->error_app = 1;
     qc->error_ftype = 0;
 
-    ngx_quic_close_connection(c, NGX_ERROR);
+    ngx_post_event(&qc->close, &ngx_posted_events);
 }
 
 
@@ -637,14 +642,15 @@ ngx_quic_shutdown_connection(ngx_connection_t *c, ngx_uint_t err,
 
 
 static void
-ngx_quic_close_timer_handler(ngx_event_t *ev)
+ngx_quic_close_handler(ngx_event_t *ev)
 {
     ngx_connection_t  *c;
 
-    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "quic close timer");
+    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0, "quic close handler");
 
     c = ev->data;
-    ngx_quic_close_connection(c, NGX_DONE);
+
+    ngx_quic_close_connection(c, NGX_OK);
 }
 
 
@@ -939,7 +945,7 @@ ngx_quic_handle_payload(ngx_connection_t *c, ngx_quic_header_t *pkt)
 
     qc = ngx_quic_get_connection(c);
 
-    qc->error = 0;
+    qc->error = (ngx_uint_t) -1;
     qc->error_reason = 0;
 
     c->log->action = "decrypting packet";
@@ -1429,31 +1435,10 @@ ngx_quic_push_handler(ngx_event_t *ev)
 void
 ngx_quic_shutdown_quic(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);
-
-    if (qc->closing) {
-        return;
+    if (c->reusable) {
+        qc = ngx_quic_get_connection(c);
+        ngx_quic_finalize_connection(c, qc->shutdown_code, qc->shutdown_reason);
     }
-
-    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_quic_finalize_connection(c, qc->shutdown_code, qc->shutdown_reason);
 }
diff --git a/src/event/quic/ngx_event_quic.h b/src/event/quic/ngx_event_quic.h
index 92c9eca..d13adbd 100644
--- a/src/event/quic/ngx_event_quic.h
+++ b/src/event/quic/ngx_event_quic.h
@@ -28,6 +28,10 @@
 #define NGX_QUIC_STREAM_UNIDIRECTIONAL       0x02
 
 
+typedef ngx_int_t (*ngx_quic_init_pt)(ngx_connection_t *c);
+typedef void (*ngx_quic_shutdown_pt)(ngx_connection_t *c);
+
+
 typedef enum {
     NGX_QUIC_STREAM_SEND_READY = 0,
     NGX_QUIC_STREAM_SEND_SEND,
@@ -74,6 +78,9 @@ 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;
@@ -85,6 +92,7 @@ struct ngx_quic_stream_s {
     ngx_connection_t              *parent;
     ngx_connection_t              *connection;
     uint64_t                       id;
+    uint64_t                       sent;
     uint64_t                       acked;
     uint64_t                       send_max_data;
     uint64_t                       send_offset;
@@ -98,7 +106,8 @@ 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;
-    ngx_uint_t                     cancelable;  /* unsigned  cancelable:1; */
+    unsigned                       cancelable:1;
+    unsigned                       fin_acked:1;
 };
 
 
@@ -113,6 +122,7 @@ void ngx_quic_shutdown_connection(ngx_connection_t *c, ngx_uint_t err,
     const char *reason);
 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_handle_read_event(ngx_event_t *rev, ngx_uint_t flags);
 ngx_int_t ngx_quic_handle_write_event(ngx_event_t *wev, size_t lowat);
 ngx_int_t ngx_quic_get_packet_dcid(ngx_log_t *log, u_char *data, size_t len,
diff --git a/src/event/quic/ngx_event_quic_ack.c b/src/event/quic/ngx_event_quic_ack.c
index ebbcf72..d236deb 100644
--- a/src/event/quic/ngx_event_quic_ack.c
+++ b/src/event/quic/ngx_event_quic_ack.c
@@ -253,6 +253,7 @@ ngx_quic_handle_ack_frame_range(ngx_connection_t *c, ngx_quic_send_ctx_t *ctx,
                 break;
 
             case NGX_QUIC_FT_STREAM:
+            case NGX_QUIC_FT_RESET_STREAM:
                 ngx_quic_handle_stream_ack(c, f);
                 break;
             }
diff --git a/src/event/quic/ngx_event_quic_streams.c b/src/event/quic/ngx_event_quic_streams.c
index 73272ff..2b613ac 100644
--- a/src/event/quic/ngx_event_quic_streams.c
+++ b/src/event/quic/ngx_event_quic_streams.c
@@ -21,6 +21,7 @@ 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);
@@ -33,6 +34,7 @@ static ngx_chain_t *ngx_quic_stream_send_chain(ngx_connection_t *c,
 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);
@@ -51,6 +53,10 @@ ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi)
     pc = c->quic ? c->quic->parent : c;
     qc = ngx_quic_get_connection(pc);
 
+    if (qc->closing) {
+        return NULL;
+    }
+
     if (bidi) {
         if (qc->streams.server_streams_bidi
             >= qc->streams.server_max_streams_bidi)
@@ -161,13 +167,10 @@ ngx_quic_close_streams(ngx_connection_t *c, ngx_quic_connection_t *qc)
     ngx_pool_t         *pool;
     ngx_queue_t        *q;
     ngx_rbtree_t       *tree;
+    ngx_connection_t   *sc;
     ngx_rbtree_node_t  *node;
     ngx_quic_stream_t  *qs;
 
-#if (NGX_DEBUG)
-    ngx_uint_t          ns;
-#endif
-
     while (!ngx_queue_empty(&qc->streams.uninitialized)) {
         q = ngx_queue_head(&qc->streams.uninitialized);
         ngx_queue_remove(q);
@@ -185,34 +188,34 @@ ngx_quic_close_streams(ngx_connection_t *c, ngx_quic_connection_t *qc)
         return NGX_OK;
     }
 
-#if (NGX_DEBUG)
-    ns = 0;
-#endif
-
     node = ngx_rbtree_min(tree->root, tree->sentinel);
 
     while (node) {
         qs = (ngx_quic_stream_t *) node;
         node = ngx_rbtree_next(tree, node);
+        sc = qs->connection;
 
         qs->recv_state = NGX_QUIC_STREAM_RECV_RESET_RECVD;
         qs->send_state = NGX_QUIC_STREAM_SEND_RESET_SENT;
 
-        if (qs->connection == NULL) {
+        if (sc == NULL) {
             ngx_quic_close_stream(qs);
             continue;
         }
 
-        ngx_quic_set_event(qs->connection->read);
-        ngx_quic_set_event(qs->connection->write);
+        ngx_quic_set_event(sc->read);
+        ngx_quic_set_event(sc->write);
 
-#if (NGX_DEBUG)
-        ns++;
-#endif
+        sc->close = 1;
+        sc->read->handler(sc->read);
     }
 
-    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                   "quic connection has %ui active streams", ns);
+    if (tree->root == tree->sentinel) {
+        return NGX_OK;
+    }
+
+    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "quic connection has active streams");
 
     return NGX_AGAIN;
 }
@@ -553,14 +556,21 @@ ngx_quic_init_streams(ngx_connection_t *c)
         return NGX_OK;
     }
 
-    ngx_quic_init_streams_handler(c);
-
-    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);
+    }
+}
+
+
+static ngx_int_t
+ngx_quic_do_init_streams(ngx_connection_t *c)
 {
     ngx_queue_t            *q;
     ngx_quic_stream_t      *qs;
@@ -570,6 +580,12 @@ ngx_quic_init_streams_handler(ngx_connection_t *c)
 
     qc = ngx_quic_get_connection(c);
 
+    if (qc->conf->init) {
+        if (qc->conf->init(c) != NGX_OK) {
+            return NGX_ERROR;
+        }
+    }
+
     for (q = ngx_queue_head(&qc->streams.uninitialized);
          q != ngx_queue_sentinel(&qc->streams.uninitialized);
          q = ngx_queue_next(q))
@@ -579,6 +595,8 @@ ngx_quic_init_streams_handler(ngx_connection_t *c)
     }
 
     qc->streams.initialized = 1;
+
+    return NGX_OK;
 }
 
 
@@ -587,6 +605,7 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
 {
     ngx_log_t              *log;
     ngx_pool_t             *pool;
+    ngx_uint_t              reusable;
     ngx_queue_t            *q;
     ngx_connection_t       *sc;
     ngx_quic_stream_t      *qs;
@@ -639,10 +658,14 @@ ngx_quic_create_stream(ngx_connection_t *c, uint64_t id)
     *log = *c->log;
     pool->log = log;
 
+    reusable = c->reusable;
+    ngx_reusable_connection(c, 0);
+
     sc = ngx_get_connection(c->fd, log);
     if (sc == NULL) {
         ngx_destroy_pool(pool);
         ngx_queue_insert_tail(&qc->streams.free, &qs->queue);
+        ngx_reusable_connection(c, reusable);
         return NULL;
     }
 
@@ -712,6 +735,7 @@ 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;
     }
 
@@ -724,6 +748,31 @@ 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)
 {
@@ -854,7 +903,7 @@ ngx_quic_stream_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
 
     qs->send_state = NGX_QUIC_STREAM_SEND_SEND;
 
-    flow = qs->acked + qc->conf->stream_buffer_size - c->sent;
+    flow = qs->acked + qc->conf->stream_buffer_size - qs->sent;
 
     if (flow == 0) {
         wev->ready = 0;
@@ -867,13 +916,14 @@ ngx_quic_stream_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
 
     n = qs->send.size;
 
-    in = ngx_quic_write_buffer(pc, &qs->send, in, limit, c->sent);
+    in = ngx_quic_write_buffer(pc, &qs->send, in, limit, qs->sent);
     if (in == NGX_CHAIN_ERROR) {
         return NGX_CHAIN_ERROR;
     }
 
     n = qs->send.size - n;
     c->sent += n;
+    qs->sent += n;
     qc->streams.sent += n;
 
     if (flow == n) {
@@ -1012,9 +1062,12 @@ ngx_quic_close_stream(ngx_quic_stream_t *qs)
     if (!qc->closing) {
         /* make sure everything is sent and final size is received */
 
-        if (qs->recv_state == NGX_QUIC_STREAM_RECV_RECV
-            || qs->send_state == NGX_QUIC_STREAM_SEND_READY
-            || qs->send_state == NGX_QUIC_STREAM_SEND_SEND)
+        if (qs->recv_state == NGX_QUIC_STREAM_RECV_RECV) {
+            return NGX_OK;
+        }
+
+        if (qs->send_state != NGX_QUIC_STREAM_SEND_DATA_RECVD
+            && qs->send_state != NGX_QUIC_STREAM_SEND_RESET_RECVD)
         {
             return NGX_OK;
         }
@@ -1031,7 +1084,16 @@ ngx_quic_close_stream(ngx_quic_stream_t *qs)
 
     if (qc->closing) {
         /* schedule handler call to continue ngx_quic_close_connection() */
-        ngx_post_event(pc->read, &ngx_posted_events);
+        ngx_post_event(&qc->close, &ngx_posted_events);
+        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;
     }
 
@@ -1056,9 +1118,34 @@ ngx_quic_close_stream(ngx_quic_stream_t *qs)
         ngx_quic_queue_frame(qc, frame);
     }
 
-    if (qc->shutdown) {
-        ngx_post_event(pc->read, &ngx_posted_events);
-    }
+    return NGX_OK;
+}
+
+
+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;
 }
@@ -1422,36 +1509,70 @@ ngx_quic_handle_max_streams_frame(ngx_connection_t *c,
 void
 ngx_quic_handle_stream_ack(ngx_connection_t *c, ngx_quic_frame_t *f)
 {
-    uint64_t                sent, unacked;
+    uint64_t                acked;
     ngx_quic_stream_t      *qs;
     ngx_quic_connection_t  *qc;
 
     qc = ngx_quic_get_connection(c);
 
-    qs = ngx_quic_find_stream(&qc->streams.tree, f->u.stream.stream_id);
-    if (qs == NULL) {
+    switch (f->type) {
+
+    case NGX_QUIC_FT_RESET_STREAM:
+
+        qs = ngx_quic_find_stream(&qc->streams.tree, f->u.reset_stream.id);
+        if (qs == NULL) {
+            return;
+        }
+
+        qs->send_state = NGX_QUIC_STREAM_SEND_RESET_RECVD;
+
+        ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                       "quic stream id:0x%xL ack reset final_size:%uL",
+                       qs->id, f->u.reset_stream.final_size);
+
+        break;
+
+    case NGX_QUIC_FT_STREAM:
+
+        qs = ngx_quic_find_stream(&qc->streams.tree, f->u.stream.stream_id);
+        if (qs == NULL) {
+            return;
+        }
+
+        acked = qs->acked;
+        qs->acked += f->u.stream.length;
+
+        if (f->u.stream.fin) {
+            qs->fin_acked = 1;
+        }
+
+        if (qs->send_state == NGX_QUIC_STREAM_SEND_DATA_SENT
+            && qs->acked == qs->sent && qs->fin_acked)
+        {
+            qs->send_state = NGX_QUIC_STREAM_SEND_DATA_RECVD;
+        }
+
+        ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                       "quic stream id:0x%xL ack len:%uL fin:%d unacked:%uL",
+                       qs->id, f->u.stream.length, f->u.stream.fin,
+                       qs->sent - qs->acked);
+
+        if (qs->connection
+            && qs->sent - acked == qc->conf->stream_buffer_size
+            && f->u.stream.length > 0)
+        {
+            ngx_quic_set_event(qs->connection->write);
+        }
+
+        break;
+
+    default:
         return;
     }
 
     if (qs->connection == NULL) {
-        qs->acked += f->u.stream.length;
-        return;
+        ngx_quic_close_stream(qs);
     }
-
-    sent = qs->connection->sent;
-    unacked = sent - qs->acked;
-    qs->acked += f->u.stream.length;
-
-    ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
-                   "quic stream id:0x%xL ack len:%uL acked:%uL unacked:%uL",
-                   qs->id, f->u.stream.length, qs->acked, sent - qs->acked);
-
-    if (unacked != qc->conf->stream_buffer_size) {
-        /* not blocked on buffer size */
-        return;
-    }
-
-    ngx_quic_set_event(qs->connection->write);
 }
 
 
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 86da942..8cc3cff 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -326,7 +326,7 @@ ngx_http_init_connection(ngx_connection_t *c)
 
 #if (NGX_HTTP_V3)
     if (hc->addr_conf->http3) {
-        ngx_http_v3_init(c);
+        ngx_http_v3_init_stream(c);
         return;
     }
 #endif
@@ -3786,7 +3786,7 @@ ngx_http_close_connection(ngx_connection_t *c)
 
 #if (NGX_HTTP_V3)
     if (c->quic) {
-        ngx_http_v3_reset_connection(c);
+        ngx_http_v3_reset_stream(c);
     }
 #endif
 
diff --git a/src/http/v3/ngx_http_v3.c b/src/http/v3/ngx_http_v3.c
index 84bb8f6..b0cf15b 100644
--- a/src/http/v3/ngx_http_v3.c
+++ b/src/http/v3/ngx_http_v3.c
@@ -17,21 +17,18 @@ static void ngx_http_v3_cleanup_session(void *data);
 ngx_int_t
 ngx_http_v3_init_session(ngx_connection_t *c)
 {
-    ngx_connection_t       *pc;
-    ngx_pool_cleanup_t     *cln;
-    ngx_http_connection_t  *hc;
-    ngx_http_v3_session_t  *h3c;
+    ngx_pool_cleanup_t      *cln;
+    ngx_http_connection_t   *hc;
+    ngx_http_v3_session_t   *h3c;
+#if (NGX_HTTP_V3_HQ)
+    ngx_http_v3_srv_conf_t  *h3scf;
+#endif
 
-    pc = c->quic->parent;
-    hc = pc->data;
-
-    if (hc->v3_session) {
-        return NGX_OK;
-    }
+    hc = c->data;
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init session");
 
-    h3c = ngx_pcalloc(pc->pool, sizeof(ngx_http_v3_session_t));
+    h3c = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_session_t));
     if (h3c == NULL) {
         goto failed;
     }
@@ -39,19 +36,25 @@ ngx_http_v3_init_session(ngx_connection_t *c)
     h3c->max_push_id = (uint64_t) -1;
     h3c->goaway_push_id = (uint64_t) -1;
 
+#if (NGX_HTTP_V3_HQ)
+    h3scf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_v3_module);
+    if (h3scf->hq) {
+        h3c->hq = 1;
+    }
+#endif
+
     ngx_queue_init(&h3c->blocked);
     ngx_queue_init(&h3c->pushing);
 
-    h3c->keepalive.log = pc->log;
-    h3c->keepalive.data = pc;
+    h3c->keepalive.log = c->log;
+    h3c->keepalive.data = c;
     h3c->keepalive.handler = ngx_http_v3_keepalive_handler;
-    h3c->keepalive.cancelable = 1;
 
-    h3c->table.send_insert_count.log = pc->log;
-    h3c->table.send_insert_count.data = pc;
+    h3c->table.send_insert_count.log = c->log;
+    h3c->table.send_insert_count.data = c;
     h3c->table.send_insert_count.handler = ngx_http_v3_inc_insert_count_handler;
 
-    cln = ngx_pool_cleanup_add(pc->pool, 0);
+    cln = ngx_pool_cleanup_add(c->pool, 0);
     if (cln == NULL) {
         goto failed;
     }
@@ -61,7 +64,7 @@ ngx_http_v3_init_session(ngx_connection_t *c)
 
     hc->v3_session = h3c;
 
-    return ngx_http_v3_send_settings(c);
+    return NGX_OK;
 
 failed:
 
diff --git a/src/http/v3/ngx_http_v3.h b/src/http/v3/ngx_http_v3.h
index a3544eb..207a8c2 100644
--- a/src/http/v3/ngx_http_v3.h
+++ b/src/http/v3/ngx_http_v3.h
@@ -141,20 +141,26 @@ struct ngx_http_v3_session_s {
     uint64_t                      next_push_id;
     uint64_t                      max_push_id;
     uint64_t                      goaway_push_id;
+    uint64_t                      next_request_id;
 
     off_t                         total_bytes;
     off_t                         payload_bytes;
 
-    ngx_uint_t                    goaway;  /* unsigned  goaway:1; */
+    unsigned                      goaway:1;
+#if (NGX_HTTP_V3_HQ)
+    unsigned                      hq:1;
+#endif
 
     ngx_connection_t             *known_streams[NGX_HTTP_V3_MAX_KNOWN_STREAM];
 };
 
 
-void ngx_http_v3_init(ngx_connection_t *c);
-void ngx_http_v3_reset_connection(ngx_connection_t *c);
+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);
 
 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_module.c b/src/http/v3/ngx_http_v3_module.c
index d274a3b..ed6becf 100644
--- a/src/http/v3/ngx_http_v3_module.c
+++ b/src/http/v3/ngx_http_v3_module.c
@@ -249,6 +249,9 @@ 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;
 }
 
diff --git a/src/http/v3/ngx_http_v3_request.c b/src/http/v3/ngx_http_v3_request.c
index 969fdf3..f051989 100644
--- a/src/http/v3/ngx_http_v3_request.c
+++ b/src/http/v3/ngx_http_v3_request.c
@@ -10,11 +10,9 @@
 #include <ngx_http.h>
 
 
-#if (NGX_HTTP_V3_HQ)
-static void ngx_http_v3_init_hq_stream(ngx_connection_t *c);
-#endif
 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,
@@ -58,20 +56,31 @@ static const struct {
 
 
 void
-ngx_http_v3_init(ngx_connection_t *c)
+ngx_http_v3_init_stream(ngx_connection_t *c)
 {
+    ngx_http_v3_session_t     *h3c;
     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;
 
     hc->ssl = 1;
 
     clcf = ngx_http_get_module_loc_conf(hc->conf_ctx, ngx_http_core_module);
+    cscf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_core_module);
     h3scf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_v3_module);
 
     if (c->quic == NULL) {
+        if (ngx_http_v3_init_session(c) != NGX_OK) {
+            ngx_http_close_connection(c);
+            return;
+        }
+
+        h3c = hc->v3_session;
+        ngx_add_timer(&h3c->keepalive, cscf->client_header_timeout);
+
         h3scf->quic.timeout = clcf->keepalive_timeout;
         ngx_quic_run(c, &h3scf->quic);
         return;
@@ -89,18 +98,6 @@ ngx_http_v3_init(ngx_connection_t *c)
         ngx_set_connection_log(c, clcf->error_log);
     }
 
-#if (NGX_HTTP_V3_HQ)
-    if (h3scf->hq) {
-        ngx_http_v3_init_hq_stream(c);
-        return;
-    }
-#endif
-
-    if (ngx_http_v3_init_session(c) != NGX_OK) {
-        ngx_http_close_connection(c);
-        return;
-    }
-
     if (c->quic->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) {
         ngx_http_v3_init_uni_stream(c);
 
@@ -110,76 +107,57 @@ ngx_http_v3_init(ngx_connection_t *c)
 }
 
 
-#if (NGX_HTTP_V3_HQ)
-
-static void
-ngx_http_v3_init_hq_stream(ngx_connection_t *c)
+ngx_int_t
+ngx_http_v3_init(ngx_connection_t *c)
 {
-    uint64_t                   n;
-    ngx_event_t               *rev;
-    ngx_http_connection_t     *hc;
+    ngx_http_v3_session_t     *h3c;
     ngx_http_core_loc_conf_t  *clcf;
-    ngx_http_core_srv_conf_t  *cscf;
 
-    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init hq stream");
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init");
 
-#if (NGX_STAT_STUB)
-    (void) ngx_atomic_fetch_add(ngx_stat_active, 1);
+    h3c = ngx_http_v3_get_session(c);
+    clcf = ngx_http_v3_get_module_loc_conf(c, ngx_http_core_module);
+    ngx_add_timer(&h3c->keepalive, clcf->keepalive_timeout);
+
+#if (NGX_HTTP_V3_HQ)
+    if (h3c->hq) {
+        return NGX_OK;
+    }
 #endif
 
-    hc = c->data;
-
-    /* Use HTTP/3 General Protocol Error Code 0x101 for finalization */
-
-    if (c->quic->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) {
-        ngx_quic_finalize_connection(c->quic->parent,
-                                     NGX_HTTP_V3_ERR_GENERAL_PROTOCOL_ERROR,
-                                     "unexpected uni stream");
-        ngx_http_close_connection(c);
-        return;
-    }
-
-    clcf = ngx_http_get_module_loc_conf(hc->conf_ctx, ngx_http_core_module);
-
-    n = c->quic->id >> 2;
-
-    if (n >= clcf->keepalive_requests) {
-        ngx_quic_finalize_connection(c->quic->parent,
-                                     NGX_HTTP_V3_ERR_GENERAL_PROTOCOL_ERROR,
-                                     "reached maximum number of requests");
-        ngx_http_close_connection(c);
-        return;
-    }
-
-    if (ngx_current_msec - c->quic->parent->start_time
-        > clcf->keepalive_time)
-    {
-        ngx_quic_finalize_connection(c->quic->parent,
-                                     NGX_HTTP_V3_ERR_GENERAL_PROTOCOL_ERROR,
-                                     "reached maximum time for requests");
-        ngx_http_close_connection(c);
-        return;
-    }
-
-    rev = c->read;
-
-    if (rev->ready) {
-        rev->handler(rev);
-        return;
-    }
-
-    cscf = ngx_http_get_module_srv_conf(hc->conf_ctx, ngx_http_core_module);
-
-    ngx_add_timer(rev, cscf->client_header_timeout);
-    ngx_reusable_connection(c, 1);
-
-    if (ngx_handle_read_event(rev, 0) != NGX_OK) {
-        ngx_http_close_connection(c);
-        return;
-    }
+    return ngx_http_v3_send_settings(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 (NGX_HTTP_V3_HQ)
+        if (!h3c->hq)
 #endif
+        {
+            (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
@@ -187,6 +165,8 @@ ngx_http_v3_init_request_stream(ngx_connection_t *c)
 {
     uint64_t                   n;
     ngx_event_t               *rev;
+    ngx_connection_t          *pc;
+    ngx_pool_cleanup_t        *cln;
     ngx_http_connection_t     *hc;
     ngx_http_v3_session_t     *h3c;
     ngx_http_core_loc_conf_t  *clcf;
@@ -219,24 +199,53 @@ ngx_http_v3_init_request_stream(ngx_connection_t *c)
         return;
     }
 
+    pc = c->quic->parent;
+
+    h3c->next_request_id = c->quic->id + 0x04;
+
     if (n + 1 == clcf->keepalive_requests
-        || ngx_current_msec - c->quic->parent->start_time
-           > clcf->keepalive_time)
+        || ngx_current_msec - pc->start_time > clcf->keepalive_time)
     {
         h3c->goaway = 1;
 
-        if (ngx_http_v3_send_goaway(c, (n + 1) << 2) != NGX_OK) {
-            ngx_http_close_connection(c);
-            return;
+#if (NGX_HTTP_V3_HQ)
+        if (!h3c->hq)
+#endif
+        {
+            if (ngx_http_v3_send_goaway(c, h3c->next_request_id) != NGX_OK) {
+                ngx_http_close_connection(c);
+                return;
+            }
         }
 
         ngx_http_v3_shutdown_connection(c, NGX_HTTP_V3_ERR_NO_ERROR,
                                         "reached maximum number of requests");
     }
 
+    cln = ngx_pool_cleanup_add(c->pool, 0);
+    if (cln == NULL) {
+        ngx_http_close_connection(c);
+        return;
+    }
+
+    cln->handler = ngx_http_v3_cleanup_connection;
+    cln->data = c;
+
+    h3c->nrequests++;
+
+    if (h3c->keepalive.timer_set) {
+        ngx_del_timer(&h3c->keepalive);
+    }
+
     rev = c->read;
-    rev->handler = ngx_http_v3_wait_request_handler;
-    c->write->handler = ngx_http_empty_handler;
+
+#if (NGX_HTTP_V3_HQ)
+    if (!h3c->hq)
+#endif
+    {
+        rev->handler = ngx_http_v3_wait_request_handler;
+        c->write->handler = ngx_http_empty_handler;
+    }
 
     if (rev->ready) {
         rev->handler(rev);
@@ -265,7 +274,6 @@ ngx_http_v3_wait_request_handler(ngx_event_t *rev)
     ngx_pool_cleanup_t        *cln;
     ngx_http_request_t        *r;
     ngx_http_connection_t     *hc;
-    ngx_http_v3_session_t     *h3c;
     ngx_http_core_srv_conf_t  *cscf;
 
     c = rev->data;
@@ -385,32 +393,22 @@ ngx_http_v3_wait_request_handler(ngx_event_t *rev)
     cln->handler = ngx_http_v3_cleanup_request;
     cln->data = r;
 
-    h3c = ngx_http_v3_get_session(c);
-    h3c->nrequests++;
-
-    if (h3c->keepalive.timer_set) {
-        ngx_del_timer(&h3c->keepalive);
-    }
-
     rev->handler = ngx_http_v3_process_request;
     ngx_http_v3_process_request(rev);
 }
 
 
 void
-ngx_http_v3_reset_connection(ngx_connection_t *c)
+ngx_http_v3_reset_stream(ngx_connection_t *c)
 {
     ngx_http_v3_srv_conf_t  *h3scf;
 
     h3scf = ngx_http_v3_get_module_srv_conf(c, ngx_http_v3_module);
 
-#if (NGX_HTTP_V3_HQ)
-    if (h3scf->hq) {
-        return;
-    }
-#endif
-
     if (h3scf->max_table_capacity > 0 && !c->read->eof
+#if (NGX_HTTP_V3_HQ)
+        && !h3scf->hq
+#endif
         && (c->quic->id & NGX_QUIC_STREAM_UNIDIRECTIONAL) == 0)
     {
         (void) ngx_http_v3_send_cancel_stream(c, c->quic->id);
@@ -429,20 +427,13 @@ ngx_http_v3_reset_connection(ngx_connection_t *c)
 
 
 static void
-ngx_http_v3_cleanup_request(void *data)
+ngx_http_v3_cleanup_connection(void *data)
 {
-    ngx_http_request_t  *r = data;
+    ngx_connection_t  *c = data;
 
-    ngx_connection_t          *c;
     ngx_http_v3_session_t     *h3c;
     ngx_http_core_loc_conf_t  *clcf;
 
-    c = r->connection;
-
-    if (!r->response_sent) {
-        c->error = 1;
-    }
-
     h3c = ngx_http_v3_get_session(c);
 
     if (--h3c->nrequests == 0) {
@@ -452,6 +443,17 @@ ngx_http_v3_cleanup_request(void *data)
 }
 
 
+static void
+ngx_http_v3_cleanup_request(void *data)
+{
+    ngx_http_request_t  *r = data;
+
+    if (!r->response_sent) {
+        r->connection->error = 1;
+    }
+}
+
+
 static void
 ngx_http_v3_process_request(ngx_event_t *rev)
 {
diff --git a/src/http/v3/ngx_http_v3_uni.c b/src/http/v3/ngx_http_v3_uni.c
index 96b7d7e..d0e392d 100644
--- a/src/http/v3/ngx_http_v3_uni.c
+++ b/src/http/v3/ngx_http_v3_uni.c
@@ -37,8 +37,23 @@ void
 ngx_http_v3_init_uni_stream(ngx_connection_t *c)
 {
     uint64_t                   n;
+#if (NGX_HTTP_V3_HQ)
+    ngx_http_v3_session_t     *h3c;
+#endif
     ngx_http_v3_uni_stream_t  *us;
 
+#if (NGX_HTTP_V3_HQ)
+    h3c = ngx_http_v3_get_session(c);
+    if (h3c->hq) {
+        ngx_http_v3_finalize_connection(c,
+                                        NGX_HTTP_V3_ERR_STREAM_CREATION_ERROR,
+                                        "uni stream in hq mode");
+        c->data = NULL;
+        ngx_http_v3_close_uni_stream(c);
+        return;
+    }
+#endif
+
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init uni stream");
 
     n = c->quic->id >> 2;
@@ -52,7 +67,7 @@ ngx_http_v3_init_uni_stream(ngx_connection_t *c)
         return;
     }
 
-    c->quic->cancelable = 1;
+    ngx_quic_cancelable_stream(c);
 
     us = ngx_pcalloc(c->pool, sizeof(ngx_http_v3_uni_stream_t));
     if (us == NULL) {
@@ -182,6 +197,11 @@ ngx_http_v3_uni_read_handler(ngx_event_t *rev)
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 read handler");
 
+    if (c->close) {
+        ngx_http_v3_close_uni_stream(c);
+        return;
+    }
+
     ngx_memzero(&b, sizeof(ngx_buf_t));
 
     while (rev->ready) {
@@ -262,6 +282,11 @@ ngx_http_v3_uni_dummy_read_handler(ngx_event_t *rev)
 
     ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 dummy read handler");
 
+    if (c->close) {
+        ngx_http_v3_close_uni_stream(c);
+        return;
+    }
+
     if (rev->ready) {
         if (c->recv(c, &ch, 1) != 0) {
             ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR, NULL);
@@ -404,7 +429,7 @@ ngx_http_v3_get_uni_stream(ngx_connection_t *c, ngx_uint_t type)
         goto failed;
     }
 
-    sc->quic->cancelable = 1;
+    ngx_quic_cancelable_stream(sc);
 
     ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
                    "http3 create uni stream, type:%ui", type);