# HG changeset patch
# User Vladimir Homutov <vl@nginx.com>
# Date 1584705005 -10800
# Node ID 3f4b407fa0b83e03378f2a42870a5eac6e32fe08
# Parent  abb7c1a4c9d5fbfafa3f9dd38ea811fed4717b74
Added parsing of CONNECTION_CLOSE2 frame (0x1D).

The difference is that error code refers to application namespace, i.e.
quic error names cannot be used to convert it to string.

diff --git a/src/event/ngx_event_quic_transport.c b/src/event/ngx_event_quic_transport.c
--- a/src/event/ngx_event_quic_transport.c
+++ b/src/event/ngx_event_quic_transport.c
@@ -622,6 +622,7 @@ ngx_quic_parse_frame(ngx_quic_header_t *
         break;
 
     case NGX_QUIC_FT_CONNECTION_CLOSE:
+    case NGX_QUIC_FT_CONNECTION_CLOSE2:
 
         p = ngx_quic_parse_int_multi(p, end, &f->u.close.error_code,
                                      &f->u.close.frame_type,
@@ -640,19 +641,28 @@ ngx_quic_parse_frame(ngx_quic_header_t *
             return NGX_ERROR;
         }
 
-        if (f->u.close.error_code >= NGX_QUIC_ERR_LAST) {
-            ngx_log_error(NGX_LOG_ERR, pkt->log, 0,
-                          "unkown error code: %ui, truncated",
-                          f->u.close.error_code);
-            f->u.close.error_code = NGX_QUIC_ERR_LAST - 1;
+        if (f->type == NGX_QUIC_FT_CONNECTION_CLOSE) {
+
+            if (f->u.close.error_code >= NGX_QUIC_ERR_LAST) {
+                ngx_log_error(NGX_LOG_ERR, pkt->log, 0,
+                              "unkown error code: %ui, truncated",
+                              f->u.close.error_code);
+                f->u.close.error_code = NGX_QUIC_ERR_LAST - 1;
+            }
+
+            ngx_log_debug4(NGX_LOG_DEBUG_EVENT, pkt->log, 0,
+                          "CONN.CLOSE: { %s (0x%xi) type=0x%xi reason='%V'}",
+                           ngx_quic_error_text(f->u.close.error_code),
+                           f->u.close.error_code, f->u.close.frame_type,
+                           &f->u.close.reason);
+        } else {
+
+            ngx_log_debug3(NGX_LOG_DEBUG_EVENT, pkt->log, 0,
+                          "CONN.CLOSE2: { (0x%xi) type=0x%xi reason '%V'}",
+                           f->u.close.error_code, f->u.close.frame_type,
+                           &f->u.close.reason);
         }
 
-        ngx_log_debug4(NGX_LOG_DEBUG_EVENT, pkt->log, 0,
-                       "CONN.CLOSE: { %s (0x%xi) type=0x%xi reason='%V'}",
-                       ngx_quic_error_text(f->u.close.error_code),
-                       f->u.close.error_code, f->u.close.frame_type,
-                       &f->u.close.reason);
-
         break;
 
     case NGX_QUIC_FT_STREAM0:
diff --git a/src/event/ngx_event_quic_transport.h b/src/event/ngx_event_quic_transport.h
--- a/src/event/ngx_event_quic_transport.h
+++ b/src/event/ngx_event_quic_transport.h
@@ -47,7 +47,7 @@
 #define NGX_QUIC_FT_PATH_CHALLENGE              0x1A
 #define NGX_QUIC_FT_PATH_RESPONSE               0x1B
 #define NGX_QUIC_FT_CONNECTION_CLOSE            0x1C
-#define NGX_QUIC_FT_CONNECTION_CLOSE2           0x1D // XXX
+#define NGX_QUIC_FT_CONNECTION_CLOSE2           0x1D
 #define NGX_QUIC_FT_HANDSHAKE_DONE              0x1E
 
 /* 22.4.  QUIC Transport Error Codes Registry */