blob: 06d2c79f533e3f7d324eada10f0b2611d5e965db [file] [log] [blame]
// 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/callback.h"
#include "base/macros.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 {
class StreamChannelFactory;
// 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(StreamChannelFactory* channel_factory, 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_