// Copyright (c) 2006-2008 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 NET_BASE_SOCKET_H_
#define NET_BASE_SOCKET_H_

#include "net/base/completion_callback.h"

namespace net {

// Represents a read/write socket.
class Socket {
 public:
  virtual ~Socket() {}

  // Reads data, up to buf_len bytes, from the socket.  The number of bytes
  // read is returned, or an error is returned upon failure.  Zero is returned
  // to indicate end-of-file.  ERR_IO_PENDING is returned if the operation
  // could not be completed synchronously, in which case the result will be
  // passed to the callback when available.
  virtual int Read(char* buf, int buf_len,
                   CompletionCallback* callback) = 0;

  // Writes data, up to buf_len bytes, to the socket.  Note: only part of the
  // data may be written!  The number of bytes written is returned, or an error
  // is returned upon failure.  ERR_IO_PENDING is returned if the operation
  // could not be completed synchronously, in which case the result will be
  // passed to the callback when available.
  virtual int Write(const char* buf, int buf_len,
                    CompletionCallback* callback) = 0;
};

}  // namespace net

#endif  // NET_BASE_SOCKET_H_