// 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_CONNECTION_TESTER_H_
#define REMOTING_PROTOCOL_CONNECTION_TESTER_H_

#include <vector>

#include "base/memory/ref_counted.h"

class MessageLoop;

namespace net {
class DrainableIOBuffer;
class GrowableIOBuffer;
class IOBuffer;
class Socket;
class StreamSocket;
}  // namespace net

namespace remoting {
namespace protocol {

// This class is used by unit tests to verify that a connection
// between two sockets works properly, i.e. data is delivered from one
// end to the other.
class StreamConnectionTester {
 public:
  StreamConnectionTester(net::StreamSocket* client_socket,
                         net::StreamSocket* host_socket,
                         int message_size,
                         int message_count);
  ~StreamConnectionTester();

  void Start();
  bool done() { return done_; }
  void CheckResults();

 protected:
  void Done();
  void InitBuffers();
  void DoWrite();
  void OnWritten(int result);
  void HandleWriteResult(int result);
  void DoRead();
  void OnRead(int result);
  void HandleReadResult(int result);

 private:
  MessageLoop* message_loop_;
  net::StreamSocket* host_socket_;
  net::StreamSocket* client_socket_;
  int message_size_;
  int test_data_size_;
  bool done_;

  scoped_refptr<net::DrainableIOBuffer> output_buffer_;
  scoped_refptr<net::GrowableIOBuffer> input_buffer_;

  int write_errors_;
  int read_errors_;
};

class DatagramConnectionTester {
 public:
  DatagramConnectionTester(net::Socket* client_socket,
                           net::Socket* host_socket,
                           int message_size,
                           int message_count,
                           int delay_ms);
  ~DatagramConnectionTester() ;

  void Start();
  void CheckResults();

 private:
  void Done();
  void DoWrite();
  void OnWritten(int result);
  void HandleWriteResult(int result);
  void DoRead();
  void OnRead(int result);
  void HandleReadResult(int result);

  MessageLoop* message_loop_;
  net::Socket* host_socket_;
  net::Socket* client_socket_;
  int message_size_;
  int message_count_;
  int delay_ms_;
  bool done_;

  std::vector<scoped_refptr<net::IOBuffer> > sent_packets_;
  scoped_refptr<net::IOBuffer> read_buffer_;

  int write_errors_;
  int read_errors_;
  int packets_sent_;
  int packets_received_;
  int bad_packets_received_;
};

}  // namespace protocol
}  // namespace remoting

#endif  // REMOTING_PROTOCOL_CONNECTION_TESTER_H_