private void ReceiveFromCallback(IAsyncResult ar)
{
UDPClientStateObject so = (UDPClientStateObject)ar.AsyncState;
Socket socket = so.workSocket;
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint tempRemoteEP = (EndPoint)sender;
int receivedDataLength = socket.EndReceiveFrom(ar, ref tempRemoteEP);
so.tempRemoteEP = tempRemoteEP;
ReceiveEvent(so);//...交由外部處理
//_receiveDone.Set();
}
public void BeginReceive()
{
//_receiveDone.Reset();
//...建立接收的位置, 所有
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
//...返回對方的位置
EndPoint remoteEP = (EndPoint)(sender);
UDPClientStateObject stateObject = new UDPClientStateObject();
stateObject.workSocket = _server;
stateObject.receiveBuffer = new byte[_receiveBuffer];
_server.BeginReceiveFrom(stateObject.receiveBuffer, 0, _receiveBuffer, 0, ref remoteEP, new AsyncCallback(ReceiveFromCallback), stateObject);
//_receiveDone.WaitOne();
}