diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/event/quic/ngx_event_quic_migration.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/event/quic/ngx_event_quic_migration.c b/src/event/quic/ngx_event_quic_migration.c index e66a402c8..d1a5cf7a0 100644 --- a/src/event/quic/ngx_event_quic_migration.c +++ b/src/event/quic/ngx_event_quic_migration.c @@ -255,6 +255,7 @@ ngx_quic_set_path(ngx_connection_t *c, ngx_quic_header_t *pkt) ngx_queue_t *q; ngx_quic_path_t *path, *probe; ngx_quic_socket_t *qsock; + ngx_quic_send_ctx_t *ctx; ngx_quic_client_id_t *cid; ngx_quic_connection_t *qc; @@ -291,6 +292,16 @@ ngx_quic_set_path(ngx_connection_t *c, ngx_quic_header_t *pkt) /* packet from new path, drop current probe, if any */ + ctx = ngx_quic_get_send_ctx(qc, pkt->level); + + /* + * only accept highest-numbered packets to prevent connection id + * exhaustion by excessive probing packets from unknown paths + */ + if (pkt->pn != ctx->largest_pn) { + return NGX_DONE; + } + if (probe && ngx_quic_free_path(c, probe) != NGX_OK) { return NGX_ERROR; } |