Introduce QUIC_VERSION_20: allowing endpoints to set different

net/tools/quic/quic_client_bin.cc

Index: net/tools/quic/quic_client_bin.cc
diff --git a/net/tools/quic/quic_client_bin.cc b/net/tools/quic/quic_client_bin.cc
index 96c992c8f65e6966c4d49b9e7e691246565f0fb8..f743a7dc127213e78a79078b2fb0db7e4395c126 100644
--- a/net/tools/quic/quic_client_bin.cc
+++ b/net/tools/quic/quic_client_bin.cc
@@ -5,8 +5,10 @@
 // A binary wrapper for QuicClient.  Connects to --hostname via --address
 // on --port and requests URLs specified on the command line.
 // Pass --secure to check the certificates using proof verifier.
-// Pass --initial_flow_control_window to specify the size of the initial flow
-// control receive window to advertise to server.
+// Pass --initial_stream_flow_control_window to specify the size of the initial
+// stream flow control receive window to advertise to server.
+// Pass --initial_session_flow_control_window to specify the size of the initial
+// session flow control receive window to advertise to server.
 //
 // For example:
 //  quic_client --address=127.0.0.1 --port=6122 --hostname=www.google.com
@@ -30,8 +32,12 @@ int32 FLAGS_port = 6121;
 std::string FLAGS_address = "127.0.0.1";
 // The hostname the quic client will connect to.
 std::string FLAGS_hostname = "localhost";
-// Size of the initial flow control receive window to advertise to server.
-int32 FLAGS_initial_flow_control_window = 100 * net::kMaxPacketSize;
+// Size of the initial stream flow control receive window to advertise to
+// server.
+int32 FLAGS_initial_stream_flow_control_window = 100 * net::kMaxPacketSize;
+// Size of the initial session flow control receive window to advertise to
+// server.
+int32 FLAGS_initial_session_flow_control_window = 200 * net::kMaxPacketSize;
 // Check the certificates using proof verifier.
 bool FLAGS_secure = false;
 
@@ -82,7 +88,13 @@ int main(int argc, char *argv[]) {
   CHECK(net::ParseIPLiteralToNumber(FLAGS_address, &addr));
 
   net::QuicConfig config;
-  config.SetInitialFlowControlWindowToSend(FLAGS_initial_flow_control_window);
+  config.SetDefaults();
+  config.SetInitialFlowControlWindowToSend(
+      FLAGS_initial_session_flow_control_window);
+  config.SetInitialStreamFlowControlWindowToSend(
+      FLAGS_initial_stream_flow_control_window);
+  config.SetInitialSessionFlowControlWindowToSend(
+      FLAGS_initial_session_flow_control_window);
 
   // TODO(rjshade): Set version on command line.
   net::EpollServer epoll_server;