From b8550fd94e275438a4cb1b8a4390c43afbba23ba Mon Sep 17 00:00:00 2001
From: Valentin Bartenev <vbart@nginx.com>
Date: Tue, 19 Jul 2016 20:31:09 +0300
Subject: [PATCH] HTTP/2: fixed send timer handling.

Checking for return value of c->send_chain() isn't sufficient since there
are data can be left in the SSL buffer.  Now the wew->ready flag is used
instead.

In particular, this fixed a connection leak in cases when all streams were
closed, but there's still some data to be sent in the SSL buffer and the
client forgot about the connection.
---
 src/http/v2/ngx_http_v2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/http/v2/ngx_http_v2.c b/src/http/v2/ngx_http_v2.c
index 959e3a6f3..0ce8bce26 100644
--- a/src/http/v2/ngx_http_v2.c
+++ b/src/http/v2/ngx_http_v2.c
@@ -549,7 +549,7 @@ ngx_http_v2_send_output_queue(ngx_http_v2_connection_t *h2c)
         c->tcp_nodelay = NGX_TCP_NODELAY_SET;
     }
 
-    if (cl) {
+    if (!wev->ready) {
         ngx_add_timer(wev, clcf->send_timeout);
 
     } else {