C#UDP（接收和发送源码）源码完整

C#UDP（接收和发送源码）源码完整

最近做了一个UDP的服务接收和发送的东西。希望能对初学的朋友一点帮助。

源码如下:

一。逻辑--UdpServer.cs

using System;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Diagnostics;
using System.Windows.Forms;
using System.Collections.Generic;
using System.Xml.Linq;
using PitchServer.po;

namespace PitchServer.vo
{
    class UdpServer
    {
        #region 构造方法
        public UdpServer():this(50000,1024){}
        public UdpServer(ushort port):this(port,1024)
        {
            _Port = port;
        }
        public UdpServer(ushort port,uint bufferSize)
        {
            _Port = port;
            _bufferSize = bufferSize;
        }
        #endregion

#region 属性
        ushort _Port = 50000;
        public ushort Port
        {
            get { return _Port; }
        }
        uint _bufferSize = 1024;
        public uint BufferSize
        {
            get{return _bufferSize;}   
        }
        bool m_IsRunning;
        public bool IsRunning
        {
            get{return m_IsRunning;}
        }
        public static Socket m_UdpServer
        {
            get;
            set;
        }
        string Ip_Address = "";
        #endregion
        Thread m_DataReceiveProcThread;
        public static List<Client> IpAddress = new List<Client>();

#region 事件定义
        public delegate void OnReceivedDataHandler(object sender,DataReceivedEventArgs e);
        public event OnReceivedDataHandler OnRecivedData;
       
        public delegate void OnStateChangedHandler(object sender,ServerStateChangeEventArgs e);
        public event OnStateChangedHandler OnStateChanged;

#endregion
        void DataReceiveProc()
        {
            while(m_IsRunning)
            {
                try
                {
                    byte[] data = new byte[BufferSize];      
                    m_UdpServer.Receive(data);

IPEndPoint ep = new IPEndPoint(IPAddress.Any, (int)Port);
                   EndPoint senderRemote = (EndPoint)ep;

m_UdpServer.ReceiveFrom(data, ref senderRemote);

ep = (IPEndPoint)senderRemote;
                   Ip_Address=ep.Address.ToString();
                   
                    bool isexit = false;
                    for (int i = 0; i < IpAddress.Count; i++)
                    {
                        if (Ip_Address == IpAddress[i].IPaddress)
                        {
                            isexit = true;
                        }
                    }
                    if (!isexit)
                    {
                        Client cl = new Client();
                        cl.IPaddress = Ip_Address;
                        cl.Port = ep.Port.ToString();
                        IpAddress.Add(cl);
                    }

if(OnRecivedData != null)
                        OnRecivedData(this, new DataReceivedEventArgs(data, Ip_Address));     
                    System.Threading.Thread.Sleep(100);
                }
                catch(Exception ex)
                {
                    m_IsRunning = false;
                    if(OnStateChanged != null)
                        OnStateChanged(this,new ServerStateChangeEventArgs(false));  
                    throw ex;                    
                }
            }
        }
        public void Stop()
        {
            if(m_IsRunning)
            {
                try
                {     
                    m_IsRunning = false;
                    if(OnStateChanged != null)
                        OnStateChanged(this,new ServerStateChangeEventArgs(m_IsRunning));   
                    m_UdpServer.Shutdown(SocketShutdown.Both);
                    m_UdpServer.Close();       
                    m_DataReceiveProcThread.Abort();
                }
                catch(Exception ex)
                {
                    Trace.WriteLine(ex.Message);
                }
            }
        }
        public void Start()
        {
            if(!m_IsRunning)
            {
                try
                {
                    m_UdpServer = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);               
                    IPEndPoint ipep=new IPEndPoint(IPAddress.Any,(int)Port);
                    m_UdpServer.Bind(ipep);  
                  // m_IsRunning = ThreadPool.QueueUserWorkItem(new WaitCallback(DataReceiveProc));
                    m_DataReceiveProcThread = new Thread(new ThreadStart(DataReceiveProc));
                    m_DataReceiveProcThread.Start();
                    m_IsRunning = true;
                    if(OnStateChanged != null)
                        OnStateChanged(this,new ServerStateChangeEventArgs(m_IsRunning));
                }
                catch(Exception ex)
                {
                    throw ex;
                }
            }
        }
        ~UdpServer()
        {
            Stop();
        }
    }
}
二。前台调用：

开启服务：

UdpServer server = new UdpServer(ushort.Parse(textBox1.Text), 1024);//第一个参数为服务器IP，第二个为规定传输的大小
            server.OnRecivedData += new UdpServer.OnReceivedDataHandler(recive);

server.Start();

接收数据的机制：

当客户端发送数据的时候会触发由UdpServer类里的m_DataReceiveProcThread线程接收并触发OnReceivedDataHandler事件，在前台要写这个事件的实现，如下：

private void recive(object sender, EventArgs e)
        {
            DataReceivedEventArgs DS = (DataReceivedEventArgs)e;
             string reciveDate = System.Text.Encoding.UTF8.GetString(DS.Data)；//把byte[]转换为 string
        }

对指定客户端发送数据：

IPEndPoint ip = new IPEndPoint(IPAddress.Parse(cl.IPaddress), Convert.ToInt32(cl.Port));//cl.IPaddress为客户端IP，‍cl.Port为客户端的端口

UdpServer.m_UdpServer.Connect(ip);//调用UdpServer的静态SOCKET对象m_UdpServer来连接客户端
                    UdpServer.m_UdpServer.Send(System.Text.Encoding.UTF8.GetBytes(message));//把要发送的字符串转换为BYTE[]然后发送出去，字符编码要看客户端的解释定义了。