remoting/protocol/datagram_channel_factory.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef REMOTING_PROTOCOL_DATAGRAM_CHANNEL_FACTORY_H_
   6 #define REMOTING_PROTOCOL_DATAGRAM_CHANNEL_FACTORY_H_
   7
   8 #include <string>
   9
  10 #include "base/callback_forward.h"
  11
  12 namespace net {
  13 class Socket;
  14 }  // namespace net
  15
  16 namespace remoting {
  17 namespace protocol {
  18
  19 class DatagramChannelFactory {
  20  public:
  21   typedef base::Callback<void(scoped_ptr<net::Socket>)>
  22       ChannelCreatedCallback;
  23
  24   DatagramChannelFactory() {}
  25
  26   // Creates new channels and calls the |callback| when then new channel is
  27   // created and connected. The |callback| is called with nullptr if channel
  28   // setup failed for any reason. Callback may be called synchronously, before
  29   // the call returns. All channels must be destroyed, and
  30   // CancelChannelCreation() called for any pending channels, before the factory
  31   // is destroyed.
  32   virtual void CreateChannel(const std::string& name,
  33                              const ChannelCreatedCallback& callback) = 0;
  34
  35   // Cancels a pending CreateChannel() operation for the named channel. If the
  36   // channel creation already completed then canceling it has no effect. When
  37   // shutting down this method must be called for each channel pending creation.
  38   virtual void CancelChannelCreation(const std::string& name) = 0;
  39
  40  protected:
  41   virtual ~DatagramChannelFactory() {}
  42
  43  private:
  44   DISALLOW_COPY_AND_ASSIGN(DatagramChannelFactory);
  45 };
  46
  47 }  // namespace protocol
  48 }  // namespace remoting
  49
  50 #endif  // REMOTING_PROTOCOL_DATAGRAM_CHANNEL_FACTORY_H_