Created
May 9, 2014 06:07
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Представляет вспомогательную сущность для получения сообщений по протоколу UDP.
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using System; | |
using System.Net; | |
using System.Net.Sockets; | |
using System.Text; | |
using System.Threading; | |
namespace Konard.Helpers | |
{ | |
public delegate void MessageHandlerCallback(string message); | |
/// <summary> | |
/// Представляет вспомогательную сущность для получения сообщений по протоколу UDP. | |
/// </summary> | |
public class UdpReceiver | |
{ | |
private static readonly UdpClient DefaultUdpClient = new UdpClient(15000); | |
private bool _disposed; | |
private bool _stopReceive; | |
private Thread _worker; | |
private readonly UdpClient _udp; | |
private readonly MessageHandlerCallback _messageHandler; | |
public UdpReceiver(Thread worker, UdpClient udp, bool stopReceive, MessageHandlerCallback messageHandler) | |
{ | |
_worker = worker; | |
_udp = udp; | |
_stopReceive = stopReceive; | |
_messageHandler = messageHandler; | |
} | |
public UdpReceiver(MessageHandlerCallback messageHandler) | |
{ | |
_worker = null; | |
_stopReceive = false; | |
_udp = DefaultUdpClient; | |
_messageHandler = messageHandler; | |
} | |
public UdpReceiver() | |
: this(null, DefaultUdpClient, false, message => { }) | |
{ | |
} | |
public void Start() | |
{ | |
_stopReceive = false; | |
_worker = new Thread(Receive); | |
_worker.Start(); | |
} | |
public void Stop() | |
{ | |
_stopReceive = true; | |
if (_udp != null) _udp.Close(); | |
if (_worker != null) _worker.Join(); | |
} | |
// Функция извлекающая пришедшие сообщения | |
// и работающая в отдельном потоке. | |
private void Receive() | |
{ | |
try | |
{ | |
while (true) | |
{ | |
IPEndPoint ipendpoint = null; | |
byte[] message = _udp.Receive(ref ipendpoint); | |
_messageHandler(Encoding.Default.GetString(message)); | |
// Если дана команда остановить поток, останавливаем бесконечный цикл. | |
if (_stopReceive) break; | |
} | |
} | |
catch (Exception e) | |
{ | |
// Log Exception | |
} | |
} | |
#region Finalizers | |
public void Dispose() | |
{ | |
Dispose(true); | |
GC.SuppressFinalize(this); | |
} | |
protected virtual void Dispose(bool disposing) | |
{ | |
if (!_disposed) | |
{ | |
if (disposing) | |
{ | |
// unsafe disposing here? | |
} | |
try { Stop(); } catch { } | |
_worker = null; | |
_disposed = true; | |
} | |
} | |
~UdpReceiver() | |
{ | |
Dispose(false); | |
} | |
#endregion | |
} | |
} |
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