# HG changeset patch
# User Valentin Bartenev <vbart@nginx.com>
# Date 1380572077 -14400
# Node ID 6208085183492f3b8ac11e4d85091c779cee16c1
# Parent  db85dacfa0133538906f6ae4479793b1dc5911cc
SPDY: ignore priority when queuing blocked frames.

With this change all such frames will be added in front of the output queue, and
will be sent first.  It prevents HOL blocking when response with higher priority
is blocked by response with lower priority in the middle of the queue because
the order of their SYN_REPLY frames cannot be changed.

Proposed by Yury Kirpichev.

diff --git a/src/http/ngx_http_spdy.h b/src/http/ngx_http_spdy.h
--- a/src/http/ngx_http_spdy.h
+++ b/src/http/ngx_http_spdy.h
@@ -173,9 +173,9 @@ ngx_http_spdy_queue_blocked_frame(ngx_ht
 {
     ngx_http_spdy_out_frame_t  **out;
 
-    for (out = &sc->last_out; *out && !(*out)->blocked; out = &(*out)->next)
+    for (out = &sc->last_out; *out; out = &(*out)->next)
     {
-        if (frame->priority >= (*out)->priority) {
+        if ((*out)->blocked) {
             break;
         }
     }