# HG changeset patch
# User Vladimir Homutov <vl@nginx.com>
# Date 1619088558 -10800
# Node ID 12f18e0bca09bd678d4d5aed51e9618507cd64a2
# Parent  225e9f1dfe7c13e14434716dc2314e5691da06b3
HTTP/3: adjusted control stream parsing.

7.2.1:
   If a DATA frame is received on a control stream, the recipient MUST
   respond with a connection error of type H3_FRAME_UNEXPECTED;

7.2.2:
   If a HEADERS frame is received on a control stream, the recipient MUST
   respond with a connection error (Section 8) of type H3_FRAME_UNEXPECTED.

diff --git a/src/http/v3/ngx_http_v3_parse.c b/src/http/v3/ngx_http_v3_parse.c
--- a/src/http/v3/ngx_http_v3_parse.c
+++ b/src/http/v3/ngx_http_v3_parse.c
@@ -1069,6 +1069,10 @@ ngx_http_v3_parse_control(ngx_connection
             st->state = sw_max_push_id;
             break;
 
+        case NGX_HTTP_V3_FRAME_DATA:
+        case NGX_HTTP_V3_FRAME_HEADERS:
+            return NGX_HTTP_V3_ERR_FRAME_UNEXPECTED;
+
         default:
             ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
                            "http3 parse skip unknown frame");