# HG changeset patch
# User Vladimir Homutov <vl@nginx.com>
# Date 1590064861 -10800
# Node ID 8bec0ac23cf99839f91290eaa1083ee4f0a7ecc0
# Parent  1245e274b9ba38acc8da4aa9bbaf36826e17bd98
Fixed retransmission of frames after closing connection.

Frames in sent queues are discarded, as no acknowledgment is expected
if the connection is closing.

diff --git a/src/event/ngx_event_quic.c b/src/event/ngx_event_quic.c
--- a/src/event/ngx_event_quic.c
+++ b/src/event/ngx_event_quic.c
@@ -1165,6 +1165,7 @@ static ngx_int_t
 ngx_quic_close_quic(ngx_connection_t *c, ngx_int_t rc)
 {
     ngx_uint_t                    i, err;
+    ngx_quic_send_ctx_t          *ctx;
     ngx_quic_connection_t        *qc;
     enum ssl_encryption_level_t   level;
 
@@ -1172,6 +1173,12 @@ ngx_quic_close_quic(ngx_connection_t *c,
 
     if (!qc->closing) {
 
+        /* drop packets from retransmit queues, no ack is expected */
+        for (i = 0; i < NGX_QUIC_SEND_CTX_LAST; i++) {
+            ctx = ngx_quic_get_send_ctx(qc, i);
+            ngx_quic_free_frames(c, &ctx->sent);
+        }
+
         level = (qc->state == ssl_encryption_early_data)
                 ? ssl_encryption_application
                 : qc->state;