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// 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_BASE_SOCKET_READER_H_
#define REMOTING_BASE_SOCKET_READER_H_
#include "base/memory/ref_counted.h"
#include "net/base/completion_callback.h"
#include "base/memory/weak_ptr.h"
namespace net {
class IOBuffer;
class Socket;
} // namespace net
namespace remoting {
// SocketReader reads data from a socket and then calls a callback for each
// completed read. Note that when this object is destroyed it may leave a
// pending read request for the socket, so the calling code should never try
// reading from the same socket again (e.g. it may result in data being lost).
class SocketReader {
public:
// Callback that is called for each finished read. |data| may be set to NULL
// in case of an error (result < 0).
typedef base::Callback<void(scoped_refptr<net::IOBuffer> data,
int result)> ReadResultCallback;
SocketReader();
~SocketReader();
// Starts reading from |socket|. |read_result_callback| is called for each
// completed read. Reading stops on the first error. Must not be called more
// than once.
void Init(net::Socket* socket, ReadResultCallback read_result_callback);
private:
void DoRead();
void OnRead(int result);
void HandleReadResult(int result);
void CallCallback(scoped_refptr<net::IOBuffer> data, int result);
net::Socket* socket_;
ReadResultCallback read_result_callback_;
scoped_refptr<net::IOBuffer> read_buffer_;
base::WeakPtrFactory<SocketReader> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(SocketReader);
};
} // namespace remoting
#endif // REMOTING_BASE_SOCKET_READER_H_
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