Implement STUN support for P2P Transport API.

content/renderer/p2p/port_allocator.h

+// Copyright (c) 2011 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.
+
+#ifndef CONTENT_RENDERER_P2P_PORT_ALLOCATOR_H_
+#define CONTENT_RENDERER_P2P_PORT_ALLOCATOR_H_
+
+#include "base/memory/ref_counted.h"
+#include "net/base/net_util.h"
+#include "third_party/libjingle/source/talk/p2p/client/basicportallocator.h"
+#include "webkit/glue/p2p_transport.h"
+
+namespace content {
+
+class P2PHostAddressRequest;
+class P2PPortAllocatorSession;
+class P2PSocketDispatcher;
+
+class P2PPortAllocator : public cricket::BasicPortAllocator{
+ public:
+  P2PPortAllocator(P2PSocketDispatcher* socket_dispatcher,
+                   talk_base::NetworkManager* network_manager,
+                   talk_base::PacketSocketFactory* socket_factory,
+                   const webkit_glue::P2PTransport::Config& config);
+  virtual ~P2PPortAllocator();
+
+  virtual cricket::PortAllocatorSession* CreateSession(
+      const std::string& name,
+      const std::string& session_type) OVERRIDE;
+
+ private:
+  friend class P2PPortAllocatorSession;
+
+  P2PSocketDispatcher* socket_dispatcher_;
+  webkit_glue::P2PTransport::Config config_;
+
+  DISALLOW_COPY_AND_ASSIGN(P2PPortAllocator);
+};
+
+class P2PPortAllocatorSession : public cricket::BasicPortAllocatorSession {
+ public:
+  P2PPortAllocatorSession(
+      P2PPortAllocator* allocator,
+      const std::string& name,
+      const std::string& session_type);
+  virtual ~P2PPortAllocatorSession();
+
+ protected:
+  // Override for cricket::BasicPortAllocatorSession::GetPortConfigurations().

[Wez, 2011/08/29 18:01:57]

nit: Does this comment add anything?

[Sergey Ulanov, 2011/08/29 22:13:39]

I think it's useful to annotate overridden methods to make it clear which
methods they override. It may be redundant in this case because there is only
one parent class, but I think it's better to keep it for consistency. I've
changed it to "Overrides for cricket::BasicPortAllocatorSession."

+  virtual void GetPortConfigurations() OVERRIDE;
+
+ private:
+  void ResolveStunAddress();
+  void OnStunAddress(const net::IPAddressNumber& address);
+
+  P2PPortAllocator* allocator_;
+
+  scoped_refptr<P2PHostAddressRequest> stun_address_request_;
+  int stun_server_port_;
+
+  DISALLOW_COPY_AND_ASSIGN(P2PPortAllocatorSession);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_P2P_PORT_ALLOCATOR_H_