Allow QUIC clients to accept STK/SCFG updates on an existing connection.

net/quic/quic_crypto_stream.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_crypto_stream.h"
 
 #include <string>
 
 #include "base/strings/string_piece.h"
 #include "net/quic/crypto/crypto_handshake.h"
@@ skipping 25 matching lines @@
                 << QuicUtils::ErrorToString(framer->error());
 }
 
 void QuicCryptoStream::OnHandshakeMessage(
     const CryptoHandshakeMessage& message) {
   session()->OnCryptoHandshakeMessageReceived(message);
 }
 
 uint32 QuicCryptoStream::ProcessRawData(const char* data,
                                         uint32 data_len) {
-  // Do not process handshake messages after the handshake is confirmed.
-  if (handshake_confirmed()) {
-    CloseConnection(QUIC_CRYPTO_MESSAGE_AFTER_HANDSHAKE_COMPLETE);
-    return 0;
-  }
   if (!crypto_framer_.ProcessInput(StringPiece(data, data_len))) {
     CloseConnection(crypto_framer_.error());
     return 0;
   }
   return data_len;
 }
 
 QuicPriority QuicCryptoStream::EffectivePriority() const {
   return QuicUtils::HighestPriority();
 }
 
 void QuicCryptoStream::SendHandshakeMessage(
     const CryptoHandshakeMessage& message) {
   session()->OnCryptoHandshakeMessageSent(message);
   const QuicData& data = message.GetSerialized();
   // TODO(wtc): check the return value.
   WriteOrBufferData(string(data.data(), data.length()), false, NULL);
 }
 
 const QuicCryptoNegotiatedParameters&
 QuicCryptoStream::crypto_negotiated_params() const {
   return crypto_negotiated_params_;
 }
 
 }  // namespace net