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 55b3b9479c26cee120055e85ff333219548b2d79..328683b5ae8dbe3126988efc5b00696a6604c9d2 100644
--- a/webrtc/p2p/base/turnport.cc
+++ b/webrtc/p2p/base/turnport.cc
@@ -442,7 +442,7 @@ 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 (!SupportsProtocol(address.protocol())) {
     return NULL;
   }