Add config to prune TURN ports

webrtc/p2p/base/relayport.h

 /*
  *  Copyright 2004 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 50 matching lines @@
   int GetOption(rtc::Socket::Option opt, int* value) override;
   int GetError() override;
   bool SupportsProtocol(const std::string& protocol) const override {
     // Relay port may create both TCP and UDP connections.
     return true;
   }
 
   const ProtocolAddress * ServerAddress(size_t index) const;
   bool IsReady() { return ready_; }
 
+  ProtocolType GetProtocol() const override {
+    // We shouldn't be using RelayPort, but we need to provide an
+    // implementation here.
+    return PROTO_UDP;
+  }
+
   // Used for testing.
   sigslot::signal1<const ProtocolAddress*> SignalConnectFailure;
   sigslot::signal1<const ProtocolAddress*> SignalSoftTimeout;
 
  protected:
   RelayPort(rtc::Thread* thread,
             rtc::PacketSocketFactory* factory,
             rtc::Network*,
             const rtc::IPAddress& ip,
             uint16_t min_port,
@@ skipping 28 matching lines @@
   std::vector<ProtocolAddress> external_addr_;
   bool ready_;
   std::vector<RelayEntry*> entries_;
   std::vector<OptionValue> options_;
   int error_;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_RELAYPORT_H_