Add IPC for DNS host address resolution.

content/renderer/p2p/socket_dispatcher.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.
 
 // P2PSocketDispatcher is a per-renderer object that dispatchers all
 // P2P messages received from the browser and relays all P2P messages
 // sent to the browser. P2PSocketClient instances register themselves
 // with the dispatcher using RegisterClient() and UnregisterClient().
 //
 // Relationship of classes.
 //
 //       P2PSocketHost                     P2PSocketClient
 //            ^                                   ^
 //            |                                   |
 //            v                  IPC              v
 //  P2PSocketDispatcherHost  <--------->  P2PSocketDispatcher
 //
 
 #ifndef CONTENT_RENDERER_P2P_SOCKET_DISPATCHER_H_
 #define CONTENT_RENDERER_P2P_SOCKET_DISPATCHER_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/id_map.h"
 #include "base/observer_list_threadsafe.h"
 #include "base/synchronization/lock.h"
 #include "content/common/p2p_sockets.h"
-#include "content/renderer/p2p/socket_client.h"
 #include "content/renderer/render_view_observer.h"
+#include "net/base/net_util.h"
 
 namespace base {
 class MessageLoopProxy;
 }  // namespace base
 
+namespace net {
+class IPEndPoint;
+}  // namespace net
+
+class P2PHostAddressRequest;
+class P2PSocketClient;
+
 // P2PSocketDispatcher works on the renderer thread. It dispatches all
 // messages on that thread, and all its methods must be called on the
 // same thread.
 class P2PSocketDispatcher : public RenderViewObserver {
  public:
   class NetworkListObserver {
    public:
     virtual ~NetworkListObserver() { }
 
     virtual void OnNetworkListChanged(
@@ skipping 14 matching lines @@
   // network configuration changes.
   void AddNetworkListObserver(NetworkListObserver* network_list_observer);
 
   // Removes network list observer.
   void RemoveNetworkListObserver(NetworkListObserver* network_list_observer);
 
   // RenderViewObserver overrides.
   virtual bool OnMessageReceived(const IPC::Message& message);
 
  private:
+  friend class P2PHostAddressRequest;
   friend class P2PSocketClient;
 
+  base::MessageLoopProxy* message_loop();
+
   // Called by P2PSocketClient.
   int RegisterClient(P2PSocketClient* client);
   void UnregisterClient(int id);
   void SendP2PMessage(IPC::Message* msg);
-  base::MessageLoopProxy* message_loop();
+
+  // Called by DnsRequest.
+  int RegisterHostAddressRequest(P2PHostAddressRequest* request);
+  void UnregisterHostAddressRequest(int id);
 
   // Incoming message handlers.
   void OnNetworkListChanged(const net::NetworkInterfaceList& networks);
+  void OnGetHostAddressResult(int32 request_id,
+                              const net::IPAddressNumber& address);
   void OnSocketCreated(int socket_id, const net::IPEndPoint& address);
   void OnIncomingTcpConnection(int socket_id, const net::IPEndPoint& address);
   void OnError(int socket_id);
   void OnDataReceived(int socket_id, const net::IPEndPoint& address,
                       const std::vector<char>& data);
 
   P2PSocketClient* GetClient(int socket_id);
 
   scoped_refptr<base::MessageLoopProxy> message_loop_;
   IDMap<P2PSocketClient> clients_;
 
+  IDMap<P2PHostAddressRequest> host_address_requests_;
+
   bool network_notifications_started_;
   scoped_refptr<ObserverListThreadSafe<NetworkListObserver> >
       network_list_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(P2PSocketDispatcher);
 };
 
 #endif  // CONTENT_RENDERER_P2P_SOCKET_DISPATCHER_H_