# HG changeset patch
# User Valentin Bartenev <vbart@nginx.com>
# Date 1468948964 -10800
# Node ID 9d61ecbe979e27c18682c1a81321532a6f02d3a8
# Parent  ee43fa9aff66a7db04f0640616f21f9e80b2d176
HTTP/2: prevented output of the HEADERS frame for canceled streams.

It's useless to generate HEADERS if the stream has been canceled already.

diff -r ee43fa9aff66 -r 9d61ecbe979e src/http/v2/ngx_http_v2_filter_module.c
--- a/src/http/v2/ngx_http_v2_filter_module.c	Tue Jul 19 20:22:44 2016 +0300
+++ b/src/http/v2/ngx_http_v2_filter_module.c	Tue Jul 19 20:22:44 2016 +0300
@@ -169,6 +169,12 @@
         return NGX_OK;
     }
 
+    fc = r->connection;
+
+    if (fc->error) {
+        return NGX_ERROR;
+    }
+
     if (r->method == NGX_HTTP_HEAD) {
         r->header_only = 1;
     }
@@ -259,8 +265,6 @@
         len += 1 + ngx_http_v2_literal_size("Wed, 31 Dec 1986 18:00:00 GMT");
     }
 
-    fc = r->connection;
-
     if (r->headers_out.location && r->headers_out.location->value.len) {
 
         if (r->headers_out.location->value.data[0] == '/') {