using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Configuration;
using System.Threading;
namespace VPNBuild
{
public class Server
{
#region 配置文件字段
private int backlog = 10;
private int point;
#endregion
#region 字段
private IPAddress ip;
private IPEndPoint endpoint;
UdpClient client;
#endregion
#region 服务端线程及状态控制
private Thread ServerThread;
private volatile bool IsCouldShutUp = false;
#endregion
private long count = 0;
#region 收发数据部分
//private ThreadPool pool;
#endregion
public Server()
{
string hostname = Dns.GetHostName();
IPAddress[] addresslist = Dns.GetHostAddresses(hostname);
foreach (IPAddress i in addresslist)
{
if (i.AddressFamily == AddressFamily.InterNetwork)
ip = i;
}
try
{
point = Convert.ToInt32(ConfigurationManager.AppSettings["ServerPoint"]);
endpoint = new IPEndPoint(ip, point);
}
catch
{
}
}
#region 服务端线程启动,关闭；
public void Start()
{
ServerThread = new Thread(new ThreadStart(ServerDealing));
ServerThread.Start();
}
private void ServerDealing()
{
client = new UdpClient(endpoint);
while (!IsCouldShutUp)
{
IPEndPoint IP = new IPEndPoint(IPAddress.Any,0);
Dealing(IP);
Thread.Sleep(10);
}
}
public void Close()
{
IsCouldShutUp = true;
if (ServerThread != null)
ServerThread.Abort();
}
#endregion
#region 数据处理部分，采用线程池
private void Dealing(object o)
{
IPEndPoint IP = o as IPEndPoint;
byte[] sendBuffer = new byte[]{0x68, 0x08, 0x00, 0x68, 0x00, 0x80, 0x80, 0x16 };
sendBuffer[0] = (byte)count;
byte[] recBuffer = new byte[1024];
//client.BeginReceive(recBuffer,SocketFlags.None,
recBuffer = client.Receive(ref IP);//接收报文
string str = "";
for (int i = 0; i < recBuffer.Length; i++)
{
str += Convert.ToString(i,16).PadLeft(2,'0')+" ";
}
Console.WriteLine(str+DateTime.Now.ToString("yyyyMMdd,hh:mm:ss:ffff")+",次数："+count);
count++;
client.Connect(IP);
client.Send(sendBuffer,sendBuffer.Length);//应答报文
}
#endregion
}
}
总结：以上程序为udp通讯中服务端，工作模式为，捕捉连接-接收客户报文-建立连接-发送到客户报文。改程序可以稳定运行。有更好的方式，还请联系我。谢谢。