| // 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. |
| |
| #ifndef REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ |
| #define REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/callback.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "remoting/base/buffered_socket_writer.h" |
| #include "remoting/protocol/errors.h" |
| #include "remoting/protocol/message_reader.h" |
| |
| namespace remoting { |
| namespace protocol { |
| |
| struct ChannelConfig; |
| class StreamChannelFactory; |
| class Session; |
| |
| // Base class for channel message dispatchers. It's responsible for |
| // creating the named channel. Derived dispatchers then dispatch |
| // incoming messages on this channel as well as send outgoing |
| // messages. |
| class ChannelDispatcherBase { |
| public: |
| class EventHandler { |
| public: |
| EventHandler() {} |
| virtual ~EventHandler() {} |
| |
| virtual void OnChannelInitialized( |
| ChannelDispatcherBase* channel_dispatcher) = 0; |
| virtual void OnChannelError(ChannelDispatcherBase* channel_dispatcher, |
| ErrorCode error) = 0; |
| }; |
| |
| // The callback is called when initialization is finished. The |
| // parameter is set to true on success. |
| typedef base::Callback<void(bool)> InitializedCallback; |
| |
| virtual ~ChannelDispatcherBase(); |
| |
| // Creates and connects the channel in the specified |
| // |session|. Caller retains ownership of the Session. |
| void Init(Session* session, |
| const ChannelConfig& config, |
| EventHandler* event_handler); |
| |
| const std::string& channel_name() { return channel_name_; } |
| |
| // Returns true if the channel is currently connected. |
| bool is_connected() { return channel_ != nullptr; } |
| |
| protected: |
| explicit ChannelDispatcherBase(const char* channel_name); |
| |
| BufferedSocketWriter* writer() { return &writer_; } |
| MessageReader* reader() { return &reader_; } |
| |
| private: |
| void OnChannelReady(scoped_ptr<P2PStreamSocket> socket); |
| void OnReadWriteFailed(int error); |
| |
| std::string channel_name_; |
| StreamChannelFactory* channel_factory_; |
| EventHandler* event_handler_; |
| scoped_ptr<P2PStreamSocket> channel_; |
| |
| BufferedSocketWriter writer_; |
| MessageReader reader_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChannelDispatcherBase); |
| }; |
| |
| } // namespace protocol |
| } // namespace remoting |
| |
| #endif // REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ |