From b20abfc11a8361dc65fbb055797ce5094cda4617 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Fri, 22 May 2015 01:59:40 +0900
Subject: [PATCH] nghttpx: Allow HTTP Upgrade from POST request if response
 header was not sent

---
 src/shrpx_downstream.cc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/shrpx_downstream.cc b/src/shrpx_downstream.cc
index 60428783..6b7f4a0e 100644
--- a/src/shrpx_downstream.cc
+++ b/src/shrpx_downstream.cc
@@ -972,8 +972,9 @@ bool Downstream::get_upgraded() const { return upgraded_; }
 bool Downstream::get_upgrade_request() const { return upgrade_request_; }
 
 bool Downstream::get_http2_upgrade_request() const {
-  return request_bodylen_ == 0 && http2_upgrade_seen_ &&
-         request_hdidx_[http2::HD_HTTP2_SETTINGS] != -1;
+  return http2_upgrade_seen_ &&
+         request_hdidx_[http2::HD_HTTP2_SETTINGS] != -1 &&
+         response_state_ == INITIAL;
 }
 
 namespace {