Disable TCP ports in the default LibjingleTransportFactory() constructor.

remoting/protocol/libjingle_transport_factory.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 "remoting/protocol/libjingle_transport_factory.h"
 
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "jingle/glue/channel_socket_adapter.h"
 #include "jingle/glue/pseudotcp_adapter.h"
@@ skipping 302 matching lines @@
       incoming_only_(incoming_only) {
 }
 
 LibjingleTransportFactory::LibjingleTransportFactory()
     : network_manager_(new talk_base::BasicNetworkManager()),
       socket_factory_(new talk_base::BasicPacketSocketFactory()),
       http_port_allocator_(NULL),
       port_allocator_(new cricket::BasicPortAllocator(
           network_manager_.get(), socket_factory_.get())),
       incoming_only_(false) {
+  port_allocator_->set_flags(
+      cricket::PORTALLOCATOR_DISABLE_TCP |
+      cricket::PORTALLOCATOR_DISABLE_STUN |
+      cricket::PORTALLOCATOR_DISABLE_RELAY |
+      cricket::PORTALLOCATOR_ENABLE_SHARED_UFRAG);
 }
 
 LibjingleTransportFactory::~LibjingleTransportFactory() {
   // This method may be called in response to a libjingle signal, so
   // libjingle objects must be deleted asynchronously.
   scoped_refptr<base::SingleThreadTaskRunner> task_runner =
       base::ThreadTaskRunnerHandle::Get();
   task_runner->DeleteSoon(FROM_HERE, port_allocator_.release());
   task_runner->DeleteSoon(FROM_HERE, socket_factory_.release());
   task_runner->DeleteSoon(FROM_HERE, network_manager_.release());
@@ skipping 25 matching lines @@
 }
 
 scoped_ptr<DatagramTransport>
 LibjingleTransportFactory::CreateDatagramTransport() {
   NOTIMPLEMENTED();
   return scoped_ptr<DatagramTransport>(NULL);
 }
 
 }  // namespace protocol
 }  // namespace remoting