Only try to pair protocol matching candidates for creating connections.

webrtc/p2p/base/turnport.cc

 /*
  *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 417 matching lines @@
   }
   socket_ = NULL;
 
   PrepareAddress();
   ++allocate_mismatch_retries_;
 }
 
 Connection* TurnPort::CreateConnection(const Candidate& address,
                                        CandidateOrigin origin) {
   // TURN-UDP can only connect to UDP candidates.
-  if (address.protocol() != UDP_PROTOCOL_NAME) {
+  if (!ProtocolMatch(address.protocol())) {
     return NULL;
   }
 
   if (!IsCompatibleAddress(address.address())) {
     return NULL;
   }
 
   if (state_ == STATE_DISCONNECTED) {
     return NULL;
   }
@@ skipping 980 matching lines @@
   // bind request as per http://tools.ietf.org/html/rfc5766#section-11.3
   if (code == STUN_ERROR_STALE_NONCE) {
     if (port_->UpdateNonce(response)) {
       // Send channel bind request with fresh nonce.
       SendChannelBindRequest(0);
     }
   }
 }
 
 }  // namespace cricket