From 0d4120ce2ce35a04199bc1a37b90aa5bc0123c1e Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Mon, 13 Oct 2014 21:13:45 +0900
Subject: [PATCH] nghttpx: Apply same fix from a225bb2 to spdy upstream

---
 src/shrpx_spdy_upstream.cc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/shrpx_spdy_upstream.cc b/src/shrpx_spdy_upstream.cc
index bbfbcfa8..51b1e2b3 100644
--- a/src/shrpx_spdy_upstream.cc
+++ b/src/shrpx_spdy_upstream.cc
@@ -254,6 +254,18 @@ void SpdyUpstream::maintain_downstream_concurrency()
 {
   while(get_config()->max_downstream_connections >
         downstream_queue_.num_active()) {
+    if(downstream_queue_.pending_empty()) {
+      break;
+    }
+
+    {
+      auto downstream = downstream_queue_.pending_top();
+      if(downstream->get_request_state() != Downstream::HEADER_COMPLETE &&
+         downstream->get_request_state() != Downstream::MSG_COMPLETE) {
+        break;
+      }
+    }
+
     auto downstream = downstream_queue_.pop_pending();
 
     if(!downstream) {