c#中UDP數據發送和接收

 

 

 

 /**//**********************
* 功能：UDP數據發送和接收
* 作者：雲濤
* 時間：20070820
* 地點：北京
**********************/

命名空間
using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.ComponentModel;

namespace IM.Controls
...{

    public class ClsUDPSrv
    ...{

        public ClsUDPSrv()
        ...{
            IsDispose = false;
        }

        public UdpClient UDP_Srv = new UdpClient();
        public static int UDPServer_Port = 2007;
        privateint UDPClient_Port;
        private Thread td_Udp;
        private IPEndPoint IPEP_Srv = new IPEndPoint(IPAddress.Any, 0);
        public delegate void DataControlEventHandler(byte[] Data, System.Net.IPAddress Ip, int Port);
        public event DataControlEventHandler DataControl;
        public delegate void Udp_ErrorEventHandler(string Error);
        public event Udp_ErrorEventHandler Udp_Error;
        public bool IsDispose = false;

        public void Listen(int Port)
        ...{
            try
            ...{
                IsDispose = false;
                UDPClient_Port = Port;
                UDP_Srv = new UdpClient(Port);
                td_Udp = new Thread(new ThreadStart(UDPDataControl));
                td_Udp.IsBackground = true;
                td_Udp.Start();
            }
            catch (Exception ex)
            ...{
                if (Udp_Error != null)
                    Udp_Error(ex.ToString());
            }
        }

        private void ReceiveDataControl()
        ...{
            while (!IsDispose)
            ...{
                try
                ...{
                    byte[] Data = UDP_Srv.Receive(ref IPEP_Srv);
                    if (DataControl != null)
                        DataControl(Data, IPEP_Srv.Address, IPEP_Srv.Port);
                    Thread.Sleep(0);
                }
                catch (Exception ex)
                ...{
                    if (Udp_Error != null)
                        Udp_Error(ex.ToString());
                }
            }
        }

        public void SendData(System.Net.IPAddress Host, int Port, byte[] Data)
        ...{
            try
            ...{
                IPEndPoint server = new IPEndPoint(Host, Port);
                UDP_Srv.Send(Data, Data.Length, server);

            }
            catch (Exception ex)
            ...{
                if (Udp_Error != null)
                    Udp_Error(ex.ToString());
            }
        }

 

        public void Dispose()
        ...{
            Thread.Sleep(30);
            try
            ...{
                IsDispose = true;
                UDP_Srv.Close();
                td_Udp.Abort();
            }
            catch (Exception ex)
            ...{
                if (Udp_Error != null)
                    Udp_Error(ex.ToString());
            }
        }