From 7c75d9db98a45e3e682a956fa27d737f2240c08a Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Thu, 5 Feb 2015 00:51:14 +0900
Subject: [PATCH] nghttpx: Set nghttp2_option_set_peer_max_concurrent_streams
 for HTTP/2 backend

---
 src/shrpx.cc               | 7 ++++++-
 src/shrpx_config.h         | 1 +
 src/shrpx_http2_session.cc | 2 +-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/shrpx.cc b/src/shrpx.cc
index 933ab074..33758ed1 100644
--- a/src/shrpx.cc
+++ b/src/shrpx.cc
@@ -761,8 +761,13 @@ void fill_default_config() {
   mod_config()->worker_frontend_connections = 0;
 
   nghttp2_option_new(&mod_config()->http2_option);
+  nghttp2_option_set_no_auto_window_update(get_config()->http2_option, 1);
 
-  nghttp2_option_set_no_auto_window_update(mod_config()->http2_option, 1);
+  nghttp2_option_new(&mod_config()->http2_client_option);
+  nghttp2_option_set_no_auto_window_update(get_config()->http2_client_option,
+                                           1);
+  nghttp2_option_set_peer_max_concurrent_streams(
+      get_config()->http2_client_option, 100);
 
   mod_config()->tls_proto_mask = 0;
   mod_config()->no_location_rewrite = false;
diff --git a/src/shrpx_config.h b/src/shrpx_config.h
index 4f0a811f..5beef6fa 100644
--- a/src/shrpx_config.h
+++ b/src/shrpx_config.h
@@ -236,6 +236,7 @@ struct Config {
   FILE *http2_upstream_dump_request_header;
   FILE *http2_upstream_dump_response_header;
   nghttp2_option *http2_option;
+  nghttp2_option *http2_client_option;
   char **argv;
   char *cwd;
   size_t num_worker;
diff --git a/src/shrpx_http2_session.cc b/src/shrpx_http2_session.cc
index 5fc4018d..cf62e4a3 100644
--- a/src/shrpx_http2_session.cc
+++ b/src/shrpx_http2_session.cc
@@ -1202,7 +1202,7 @@ int Http2Session::on_connect() {
   }
 
   rv = nghttp2_session_client_new2(&session_, callbacks, this,
-                                   get_config()->http2_option);
+                                   get_config()->http2_client_option);
 
   if (rv != 0) {
     return -1;