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QUIC: added missing check for backup path existence.

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This commit is contained in:
Vladimir Homutov 2021-12-16 11:42:28 +03:00
parent fa4da05854
commit 93230cd8cf
1 changed files with 15 additions and 6 deletions
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21
src/event/quic/ngx_event_quic_migration.c
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@ -81,6 +81,7 @@ ngx_int_t
ngx_quic_handle_path_response_frame(ngx_connection_t *c,
ngx_quic_path_challenge_frame_t *f)
{
ngx_uint_t rst;
ngx_queue_t *q;
ngx_quic_path_t *path, *prev;
ngx_quic_connection_t *qc;
@ -127,13 +128,21 @@ valid:
* unless the only change in the peer's address is its port number.
*/
prev = qc->backup->path;
rst = 1;
if (ngx_cmp_sockaddr(prev->sockaddr, prev->socklen,
path->sockaddr, path->socklen, 0)
!= NGX_OK)
{
/* address has changed */
if (qc->backup) {
prev = qc->backup->path;
if (ngx_cmp_sockaddr(prev->sockaddr, prev->socklen,
path->sockaddr, path->socklen, 0)
== NGX_OK)
{
/* address did not change */
rst = 0;
}
}
if (rst) {
ngx_memzero(&qc->congestion, sizeof(ngx_quic_congestion_t));
qc->congestion.window = ngx_min(10 * qc->tp.max_udp_payload_size,