Implements migration of a QUIC connection to a different destination address if specified by the se…

net/quic/quic_chromium_client_session.cc

Index: net/quic/quic_chromium_client_session.cc
diff --git a/net/quic/quic_chromium_client_session.cc b/net/quic/quic_chromium_client_session.cc
index a10373a34071deac27865d68de00db8edddad790..8aab42d4bcf31953c950703cfa7324f5dd8ccef4 100644
--- a/net/quic/quic_chromium_client_session.cc
+++ b/net/quic/quic_chromium_client_session.cc
@@ -737,6 +737,16 @@ void QuicChromiumClientSession::OnClosedStream() {
   }
 }
 
+void QuicChromiumClientSession::OnConfigNegotiated() {
+  QuicClientSessionBase::OnConfigNegotiated();
+  if (stream_factory_ && config()->HasReceivedAlternateServerAddress()) {
+    // Server has sent an alternate address to connect to.
+    stream_factory_->MigrateSessionToNewSocket(
+        this, config()->ReceivedAlternateServerAddress(),
+        NetworkChangeNotifier::kInvalidNetworkHandle, net_log_, nullptr);
+  }
+}
+
 void QuicChromiumClientSession::OnCryptoHandshakeEvent(
     CryptoHandshakeEvent event) {
   if (stream_factory_ && event == HANDSHAKE_CONFIRMED &&