Only try to pair protocol matching candidates for creating connections.

webrtc/p2p/base/turnport.cc

Index: webrtc/p2p/base/turnport.cc
diff --git a/webrtc/p2p/base/turnport.cc b/webrtc/p2p/base/turnport.cc
index 4279b0fa5d0d4a36c97541af0089481da618d249..89af91b53f1e81ab7f9681d1eede874a7d4861d6 100644
--- a/webrtc/p2p/base/turnport.cc
+++ b/webrtc/p2p/base/turnport.cc
@@ -435,7 +435,7 @@ void TurnPort::OnAllocateMismatch() {
 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;
   }