# HG changeset patch
# User Vladimir Homutov <vl@nginx.com>
# Date 1599029655 -10800
# Node ID eb5aa85294e9540521a58ebb9c91abffb6accb2d
# Parent  985f9351dd871ee8ab336441c6b09e08bd1b017a
QUIC: discard unrecognized long packes.

While there, updated comment about discarded packets.

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
@@ -1593,7 +1593,7 @@ ngx_quic_input(ngx_connection_t *c, ngx_
             } else {
                 ngx_log_error(NGX_LOG_INFO, c->log, 0,
                               "quic unknown long packet type");
-                return NGX_ERROR;
+                rc = NGX_DECLINED;
             }
 
         } else {
@@ -1618,6 +1618,9 @@ ngx_quic_input(ngx_connection_t *c, ngx_
          * not available or any other reason), the receiver MAY either
          * discard or buffer the packet for later processing and MUST
          * attempt to process the remaining packets.
+         *
+         * We also skip packets that don't match connection state
+         * or cannot be parsed properly.
          */
 
         /* b->pos is at header end, adjust by actual packet length */