/// <summary>
/// 线程池回调方法
/// </summary>
/// <param name="state">回调方法要使用的信息对象</param>
private void ThreadPoolCallback(Object state)
{ // 如果无法进行转换，则 as 返回 null 而非引发异常
UdpMessage udpMessage = state as UdpMessage;
try
{ // 执行任务
if (OnThreadTaskRequest != null)
{
OnThreadTaskRequest(udpMessage, EventArgs.Empty);
}
}
catch
{
// 阻止异常抛出
}
finally
{ // 关闭连接
// 从列表中移除连接
_mutexClients.WaitOne();
_mutexClients.ReleaseMutex();
}
}
/// <summary>
/// 侦听连接线程
/// </summary>
private void ListenThreadAction()
{
// 启动侦听
//Start();
// 初始化连接列表和互斥量
//_tcpClients = new List<TcpClient>();
_mutexClients = new Mutex();
IPEndPoint remoteIpEndIPoint = new IPEndPoint(IPAddress.Any, port);
IPEndPoint iep = new IPEndPoint(IPAddress.Any, 0);
// 接受连接
while (true)
{
try
{
if(udpReceive == null)
udpReceive = new UdpClient(remoteIpEndIPoint);
byte[] receiveBytes = udpReceive.Receive(ref iep);
//udpReceive.Close();
//udpReceive = null;
string question = Encoding.UTF8.GetString(receiveBytes);
//MainWindow.insert_file("log.log", "GET:time=" + DateTime.Now.ToString("HH:mm:ss") + ",ques=" + question);
UdpMessage udpMessage = new UdpMessage(iep, question);
// 接受挂起的连接请求
//tcpClient = AcceptTcpClient();
// 将该连接通信加入线程池队列
ThreadPool.QueueUserWorkItem(ThreadPoolCallback, udpMessage);
// 连接加入列表
_mutexClients.WaitOne();
//_tcpClients.Add(tcpClient);
_mutexClients.ReleaseMutex();
}
catch (SocketException se)
{ // 结束侦听线程
MainWindow.insert_file("error.log", "0time=" + DateTime.Now.ToString() + "=" + se.Message);
//break;
}
catch (Exception ee)
{ // 加入队列失败
if (udpReceive != null)
{
MainWindow.insert_file("error.log", "0time=" + DateTime.Now.ToString() + "=" + ee.Message);
udpReceive.Close();
udpReceive = null;
}
}
}
}