C# C/S UDP一对多异步通信

w_angfei 2013-09-26 08:04:58
服务器端：
public class StateObject

    {

        //服务器端

        public Socket udpServer = null;

        //接受数据缓冲区

        public byte[] buffer = new byte[10*1024];

        //远程终端

        public EndPoint remoteEP;



        public bool flag = false;

    }


  private void ServerForm_Load(object sender, EventArgs e)

        {

            StartServer startServer = new StartServer();

            thread = new Thread(new ThreadStart(startServer.ServerBind));

            thread.Start();

        }

#region 服务器绑定终端节点
        public void ServerBind()

        {

            //主机IP

            IPEndPoint serverIp = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8686);

            Socket udpServer = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

            udpServer.Bind(serverIp);

            IPEndPoint clientIp = new IPEndPoint(IPAddress.Any, 0);

            state = new StateObject();

            state.udpServer = udpServer;

            state.remoteEP = (EndPoint)clientIp;

            AsynRecive();

        }

        #endregion



        #region 异步接受消息

        public void AsynRecive()

        {

            lock (state)

            {

                state.udpServer.BeginReceiveFrom(state.buffer, 0, state.buffer.Length, SocketFlags.None, ref state.remoteEP,

                    new AsyncCallback(ReciveCallback), null);

                receiveDone.WaitOne();

            }

        }

        #endregion



        #region 异步接受消息回调函数

        public void ReciveCallback(IAsyncResult asyncResult)

        {

            if (asyncResult.IsCompleted)

            {

                //获取发送端的终节点

                IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 0);

                EndPoint remoteEP = (EndPoint)ipep;

                state.udpServer.EndReceiveFrom(asyncResult, ref remoteEP);

                data = new byte[10*1024];

                state.buffer.CopyTo(data, 0);

                state.buffer = new byte[10*1024];         

                int i = 0;

                ///取出命令

                for (i = 0; i < leng; i++)

                {

                    if (Convert.ToInt32(data[i]) == 0)    

                        break;

                }

                byte[] cmdbyte = new byte[i];

                for (int k = 0; k < i; k++)

                {

                    cmdbyte[k] = data[k];

                }

                commandStr = Encoding.ASCII.GetString(cmdbyte);

                if(!commandStr.Equals("connect"))

                MessageBox.Show(commandStr, "kkk");

                handleMsg(commandStr);



                state.remoteEP = remoteEP;

                receiveDone.Set();

                AsynRecive();//继续接受消息

            }

        }

        #endregion



        #region 异步发送消息

        public void AsynSend(byte[] buffer)

        {

            state.udpServer.BeginSendTo(buffer, 0, buffer.Length, SocketFlags.None, state.remoteEP,

                new AsyncCallback(SendCallback), null);

            sendDone.WaitOne();

        }

        #endregion



        #region 异步发送消息回调函数

        public void SendCallback(IAsyncResult asyncResult)

        {

            //消息发送完毕

            if (asyncResult.IsCompleted)

            {

                state.udpServer.EndSendTo(asyncResult);

            }

            sendDone.Set();

        }

        #endregion

 private void handleMsg(String msg)

{



}


客户端：
 public class StateObject

    {

        //客户端套接字

        public Socket udpClient = null;

        //接收信息缓冲区

        public byte[] buffer = new byte[10*1024];

        //服务器端终节点

        public IPEndPoint serverIp;

        //远程终端节点

        public EndPoint remoteEP;



    }

 private void 登陆_Load(object sender, EventArgs e)

        {

            contactWithServer = new ContactWithServer(this);

            clientcontactserverThread = new Thread(new ThreadStart(contactWithServer.AsynRecive));

            clientcontactserverThread.Start();           

        }


public ContactWithServer(登陆 loginForm)

        {

            this.loginForm = loginForm;

            state = new StateObject();

            state.udpClient = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

            state.serverIp = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8686);

            state.remoteEP = (EndPoint)(new IPEndPoint(IPAddress.Any, 0));

            //此处注意：

            //  由于当前是客户端，所以没有绑定终节点

            //  不可直接接收消息，必须先向其他终端发送信息告知本机终节点

            string msg = "connect";

            byte[] buffer = Encoding.ASCII.GetBytes(msg);

            AsynSend(buffer);

        }

  #region 异步接收来自其他终端发送的消息

        public void AsynRecive()

        {

            state.udpClient.BeginReceiveFrom(state.buffer, 0, state.buffer.Length, SocketFlags.None, ref state.remoteEP,

                new AsyncCallback(ReciveCallback), null);

            receiveDone.WaitOne();

        }

        #endregion



        #region 异步接收来自其他终端发送的消息回调函数

        public void ReciveCallback(IAsyncResult asyncResult)

        {

            //信息接收完成

            if (asyncResult.IsCompleted)

            {

                state.udpClient.EndReceiveFrom(asyncResult, ref state.remoteEP);

                data=new byte[10*1024];

                state.buffer.CopyTo(data,0);

                if (data.Length < 20)                       //只有命令

                    commandStr = Encoding.ASCII.GetString(data);

                else                                       

                {

                    int i = 0;

                    ///取出命令

                    for (i = 0; i < leng; i++)

                    {

                        if (Convert.ToInt32(data[i]) == 0)    

                            break;

                    }

                    byte[] cmdbyte = new byte[i];

                    for (int k = 0; k < i; k++)

                    {

                        cmdbyte[k] = data[k];

                    }

                    commandStr = Encoding.ASCII.GetString(cmdbyte);

                }

                MessageBox.Show(commandStr, "来自服务器的命令！");

                handleMsg(commandStr);         

                state.buffer=new byte[10*1024];

                AsynRecive();

                receiveDone.Set();

            }

        }

        #endregion



 #region 异步发送消息

        public void AsynSend(byte[] buffer)

        {

            state.udpClient.BeginSendTo(buffer, 0, buffer.Length, SocketFlags.None, state.serverIp,

                new AsyncCallback(SendCallback), null);

            sendDone.WaitOne();

        }

        #endregion



        #region 异步发送消息回调函数

        public void SendCallback(IAsyncResult asyncResult)

        {

            //消息发送完成

            if (asyncResult.IsCompleted)

            {

                state.udpClient.EndSendTo(asyncResult);

            }

            sendDone.Set();

        }

        #endregion

上面的代码可以正确实现服务器与客户端一对一的通信，但是我现在需要一对多的，该怎样修改呢？
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a1295962107 2014-12-27
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你解决了吗1对多
a1295962107 2014-12-27
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哪句代码位置写错了
WayToAccept 2014-05-04
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楼主最后怎么实现一对多的，可否告知，最近做一个即时通信也遇到问题了
华为黑名单 2013-09-27
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引用 7 楼 u011443241 的回复:
希望以后谁写这块少走点弯路。。。
localEP = new IPEndPoint(IPAddress.Any, PortNum); listener.Bind(localEP); 搞了2次！我的代码可以直接拿着用！
linuxca 2013-09-27
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w_angfei 2013-09-27
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希望以后谁写这块少走点弯路。。。
华为黑名单 2013-09-27
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逻辑确实没什么问题！
华为黑名单 2013-09-27
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using System; using System.Collections.Generic; using System.Text; using System.Net.Sockets; using System.Net; namespace tti365.ConsumeSmg365WS.Common { class BranchInfo { private byte[] _Buffer = new byte[4 * 1024];//接收数据缓存 private Socket _Socket;//客户端套接字 private int _MessageLength;//文件头大小 private int _OperationCode;//操作码 private byte[] _SendBuffer = new byte[4 * 1024];//发送数据的缓存 private int _ErrorTime; private string _BranchNo; private DateTime _Time; public EndPoint RePoint =(EndPoint)new IPEndPoint(IPAddress.Any,0) ; /// <summary> /// UDP 套接字包 /// </summary> public Socket Socket { set { _Socket = value; } get { return _Socket; } } /// <summary> /// 发送短IP /// </summary> //public EndPoint RePoint //{ // set { _RePoint = value; } // get { return _RePoint; } //} /// <summary> /// 数据缓存包 /// </summary> public byte[] Buffer { set { _Buffer = value; } get { return _Buffer; } } /// <summary> /// 数据包大小 /// </summary> public int MessageLength { set { _MessageLength = value; } get { return _MessageLength; } } /// <summary> /// 操作码 /// </summary> public int OperationCode { set { _OperationCode = value; } get { return _OperationCode; } } /// <summary> /// 发送数据包 /// </summary> public byte[] SendBuffer { set { _SendBuffer = value; } get { return _SendBuffer; } } /// <summary> /// 错误次数 /// </summary> public int ErrorTime { set { _ErrorTime = value; } get { return _ErrorTime; } } /// <summary> /// 接收机构类码 /// </summary> public string BranchNo { set { _BranchNo = value; } get { return _BranchNo; } } /// <summary> /// 时间 /// </summary> public DateTime Time { set { _Time = value; } get { return _Time; } } } }
w_angfei 2013-09-27
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找见问题了，一句代码的位置写错了，太不仔细了，这个逻辑是没问题的
华为黑名单 2013-09-27
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private delegate void WriteWrongLogHandle(string str); private delegate void WriteLogHandle(byte[] byteData); //本机IP地址 private IPEndPoint localEP; //将要发送的IP地址 // private EndPoint RemotePoint; //网络端口 Socket listener = null;//udp private static bool isListener = true;//控制服务器监控服务 Dictionary<string, EndPoint> dic = null; //IP信息字典 private static readonly object padlock = new object(); private int MessageLength;//数据包大小 private int OperationCode;//操作内码 private Socket handle; private BranchInfo info = null; private string BranchNo;//机构内码 private int MsgThreadNum;//运行通讯线程数目 private int PortNum;//端口数目 private string ServerIp;// private ManualResetEvent receiveDone = null; private bool IsLog = false; //是否写日志 #region 服务启动 protected override void OnStart(string[] args) { try { // TODO: 在此处添加代码以启动服务。 //启动PosConm服务时开始写日志 // Utils.WriteLogFile("正在启动ConsumeSmg服务..."); String strFileName = AppDomain.CurrentDomain.BaseDirectory + "\\ConsumeMsg.xml"; XmlDocument doc = new XmlDocument(); doc.Load(strFileName); // WriteExceptionLog(strFileName); XmlNodeList listNode = doc.GetElementsByTagName("settings"); foreach (XmlNode node in listNode[0].ChildNodes) { switch (node.Name) { case "ServerIp": ServerIp = node.InnerText; break; case "PortNum": PortNum = Convert.ToInt32(node.InnerText); break; case "MsgThreadNum": MsgThreadNum = Convert.ToInt32(node.InnerText); break; case "IsLog": IsLog = Convert.ToBoolean(Convert.ToInt32(node.InnerText)); break; default: break; } } if (IsLog) { WriteExceptionLog("正在启动ConsumeSmg服务..."); } dic = new Dictionary<string, EndPoint>(); //IP信息字典 info = new BranchInfo(); receiveDone = new ManualResetEvent(false); listener = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);//udp localEP = new IPEndPoint(IPAddress.Any, PortNum); listener.Bind(localEP); isListener = true; if (IsLog) { WriteExceptionLog(ServerIp + "[" + PortNum + "]"); } try { //开多线程通讯 //for (int i = 0; i < MsgThreadNum; i++) //{ Thread acceptWorkThread = new Thread(AcceptWorkThread); acceptWorkThread.Start(); //} Thread updateDicThread = new Thread(new ThreadStart(UpdateDictionaryThread)); updateDicThread.Start(); } catch (Exception ex) { if (IsLog) { WriteExceptionLog("开始启动接收线程" + ex.Message); } } } catch (Exception ex) { if (IsLog) { WriteExceptionLog("启动服务失败：" + ex.Message); } Stop(); } } #endregion public void AcceptWorkThread() { ////本机IP从XML文件中读取 try { //异步接收数据 info = new BranchInfo(); info.Socket = listener; listener.BeginReceiveFrom(info.Buffer, 0, info.Buffer.Length, SocketFlags.None, ref info.RePoint, new AsyncCallback(ReceiveCallBack), info); receiveDone.WaitOne(); Thread.Sleep(100); if (IsLog) { WriteExceptionLog("打印从客户端传输过来的字节数组"); } //WriteByteDataLog(info.Buffer); } catch (Exception ex) { if (IsLog) { WriteExceptionLog("异步接收短消息" + ex.Message); } Stop(); } } 服务端
w_angfei 2013-09-27
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这是怎么了，都没人来看看
w_angfei 2013-09-27
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引用 9 楼 luodayoudianzi 的回复:
[quote=引用 7 楼 u011443241 的回复:] 希望以后谁写这块少走点弯路。。。
localEP = new IPEndPoint(IPAddress.Any, PortNum); listener.Bind(localEP); 搞了2次！我的代码可以直接拿着用！[/quote]搞了两次是什么意思？
w_angfei 2013-09-26
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自己顶下，大家帮忙看看吧
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