diff -rudp nginx-1.7.7/src/http/ngx_http_upstream.c nginx-1.7.7-patched/src/http/ngx_http_upstream.c
--- nginx-1.7.7/src/http/ngx_http_upstream.c	2012-08-06 10:34:08.000000000 -0700
+++ nginx-1.7.7-patched/src/http/ngx_http_upstream.c	2012-12-05 14:46:41.741173058 -0800
@@ -1216,6 +1216,7 @@ ngx_http_upstream_connect(ngx_http_reque
     }
 
     u->request_sent = 0;
+    u->request_all_sent = 0;
 
     if (rc == NGX_AGAIN) {
         ngx_add_timer(c->write, u->conf->connect_timeout);
@@ -1418,6 +1419,8 @@ ngx_http_upstream_send_request(ngx_http_
 
     /* rc == NGX_OK */
 
+    u->request_all_sent = 1;
+
     if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
         if (ngx_tcp_push(c->fd) == NGX_ERROR) {
             ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
@@ -1484,7 +1487,7 @@ ngx_http_upstream_send_request_handler(n
 
 #endif
 
-    if (u->header_sent) {
+    if (u->request_all_sent) {
         u->write_event_handler = ngx_http_upstream_dummy_handler;
 
         (void) ngx_handle_write_event(c->write, 0);
diff -rudp nginx-1.7.7/src/http/ngx_http_upstream.h nginx-1.7.7-patched/src/http/ngx_http_upstream.h
--- nginx-1.7.7/src/http/ngx_http_upstream.h	2012-02-13 03:01:58.000000000 -0800
+++ nginx-1.7.7-patched/src/http/ngx_http_upstream.h	2012-12-05 14:41:09.763514741 -0800
@@ -324,6 +324,7 @@ struct ngx_http_upstream_s {
     unsigned                         keepalive:1;
 
     unsigned                         request_sent:1;
+    unsigned                         request_all_sent:1;
     unsigned                         header_sent:1;
 };
 
