Include the socket receive buffer in the connection handshake.

net/quic/quic_config_test.cc

Index: net/quic/quic_config_test.cc
diff --git a/net/quic/quic_config_test.cc b/net/quic/quic_config_test.cc
index 9f3e27daecac8a210224b11c1b31b156b2532e41..86f435f83b0faee96ed8727908c4073f86403e46 100644
--- a/net/quic/quic_config_test.cc
+++ b/net/quic/quic_config_test.cc
@@ -42,6 +42,7 @@ TEST_F(QuicConfigTest, ToHandshakeMessage) {
   config_.set_idle_connection_state_lifetime(QuicTime::Delta::FromSeconds(5),
                                              QuicTime::Delta::FromSeconds(2));
   config_.set_max_streams_per_connection(4, 2);
+  config_.SetSocketReceiveBufferToSend(kDefaultSocketReceiveBuffer);
   CryptoHandshakeMessage msg;
   config_.ToHandshakeMessage(&msg);
 
@@ -66,6 +67,10 @@ TEST_F(QuicConfigTest, ToHandshakeMessage) {
   EXPECT_EQ(QUIC_NO_ERROR, error);
   EXPECT_EQ(kInitialSessionFlowControlWindowForTest, value);
 
+  error = msg.GetUint32(kSRBF, &value);
+  EXPECT_EQ(QUIC_NO_ERROR, error);
+  EXPECT_EQ(kDefaultSocketReceiveBuffer, value);
+
   const QuicTag* out;
   size_t out_len;
   error = msg.GetTaglist(kCGST, &out, &out_len);
@@ -107,6 +112,7 @@ TEST_F(QuicConfigTest, ProcessClientHello) {
       2 * kInitialStreamFlowControlWindowForTest);
   client_config.SetInitialSessionFlowControlWindowToSend(
       2 * kInitialSessionFlowControlWindowForTest);
+  client_config.SetSocketReceiveBufferToSend(kDefaultSocketReceiveBuffer);
   QuicTagVector copt;
   copt.push_back(kTBBR);
   copt.push_back(kFHDR);
@@ -137,6 +143,8 @@ TEST_F(QuicConfigTest, ProcessClientHello) {
             2 * kInitialStreamFlowControlWindowForTest);
   EXPECT_EQ(config_.ReceivedInitialSessionFlowControlWindowBytes(),
             2 * kInitialSessionFlowControlWindowForTest);
+  EXPECT_EQ(config_.ReceivedSocketReceiveBuffer(),
+            kDefaultSocketReceiveBuffer);
 }
 
 TEST_F(QuicConfigTest, ProcessServerHello) {
@@ -159,6 +167,7 @@ TEST_F(QuicConfigTest, ProcessServerHello) {
       2 * kInitialStreamFlowControlWindowForTest);
   server_config.SetInitialSessionFlowControlWindowToSend(
       2 * kInitialSessionFlowControlWindowForTest);
+  server_config.SetSocketReceiveBufferToSend(kDefaultSocketReceiveBuffer);
   CryptoHandshakeMessage msg;
   server_config.ToHandshakeMessage(&msg);
   string error_details;
@@ -183,6 +192,8 @@ TEST_F(QuicConfigTest, ProcessServerHello) {
             2 * kInitialStreamFlowControlWindowForTest);
   EXPECT_EQ(config_.ReceivedInitialSessionFlowControlWindowBytes(),
             2 * kInitialSessionFlowControlWindowForTest);
+  EXPECT_EQ(config_.ReceivedSocketReceiveBuffer(),
+            kDefaultSocketReceiveBuffer);
 }
 
 TEST_F(QuicConfigTest, MissingOptionalValuesInCHLO) {