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TCPInterface.cs 3.7KB

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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5. using System.IO;
  6. using System.Net;
  7. using System.Net.Sockets;
  8. using System.Threading;
  9. namespace Combot
  10. {
  11. class TCPInterface
  12. {
  13. internal event Action<TCPError> TCPErrorEvent;
  14. internal event Action<int> TCPConnectionEvent;
  15. private IPEndPoint _serverIP = null;
  16. private int _readTimeout = 250;
  17. private Socket _tcpClient;
  18. private NetworkStream _tcpStream;
  19. private int _allowedFailedCount;
  20. private int _currentFailedCount;
  21. internal TCPInterface()
  22. {
  23. }
  24. internal bool Connect(IPAddress IP, int port, int readTimeout, int allowedFailedCount = 0)
  25. {
  26. _serverIP = new IPEndPoint(IP, port);
  27. _readTimeout = readTimeout;
  28. _allowedFailedCount = allowedFailedCount;
  29. _currentFailedCount = 0;
  30. try
  31. {
  32. _tcpClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
  33. _tcpClient.Connect(_serverIP);
  34. _tcpClient.ReceiveTimeout = _readTimeout;
  35. _tcpStream = new NetworkStream(_tcpClient);
  36. return true;
  37. }
  38. catch
  39. {
  40. if (TCPErrorEvent != null)
  41. {
  42. TCPError error = new TCPError();
  43. error.Message = string.Format("Unable to connect to {0} on port {1}", _serverIP.Address, _serverIP.Port);
  44. TCPErrorEvent(error);
  45. }
  46. }
  47. return false;
  48. }
  49. internal void Disconnect()
  50. {
  51. if (_tcpStream != null)
  52. {
  53. _tcpStream.Close();
  54. }
  55. if (_tcpClient != null)
  56. {
  57. _tcpClient.Close();
  58. }
  59. }
  60. internal void Write(string data)
  61. {
  62. if (_tcpStream.CanWrite)
  63. {
  64. byte[] message = System.Text.Encoding.UTF8.GetBytes(data + Environment.NewLine);
  65. _tcpStream.Write(message, 0, message.Length);
  66. }
  67. }
  68. internal string Read()
  69. {
  70. try
  71. {
  72. if (_tcpStream.CanRead)
  73. {
  74. byte[] readBytes = new byte[100000];
  75. _tcpStream.Read(readBytes, 0, readBytes.Length);
  76. string result = Encoding.UTF8.GetString(readBytes, 0, readBytes.Length);
  77. // Reset Failed Counter
  78. _currentFailedCount = 0;
  79. return result.TrimEnd('\0');
  80. }
  81. }
  82. catch (IOException)
  83. {
  84. _currentFailedCount++;
  85. if (TCPErrorEvent != null && _tcpStream.CanRead)
  86. {
  87. TCPError error = new TCPError();
  88. error.Message = string.Format("Read Timeout, No Response from Server in {0}ms", _readTimeout);
  89. TCPErrorEvent(error);
  90. }
  91. }
  92. catch (Exception ex)
  93. {
  94. _currentFailedCount++;
  95. if (TCPErrorEvent != null)
  96. {
  97. TCPError error = new TCPError();
  98. error.Message = ex.Message;
  99. TCPErrorEvent(error);
  100. }
  101. }
  102. if (_currentFailedCount > _allowedFailedCount)
  103. {
  104. if (TCPConnectionEvent != null)
  105. {
  106. TCPConnectionEvent(_currentFailedCount);
  107. }
  108. Disconnect();
  109. _currentFailedCount = 0;
  110. }
  111. return null;
  112. }
  113. }
  114. }