每个套接字地址只有一种用法(Only one usage of each socket address)

这是我第一次使用Windows窗体应用程序来执行套接字服务器/客户端。

我的public void Listen()下我的Socket.bind(IPEndpoint)遇到了问题。我收到了错误

通常只允许使用每个套接字地址（协议/网络地址/端口）

我有什么想法可以解决这个问题吗？

public Form1() { CheckForIllegalCrossThreadCalls = false; InitializeComponent(); } Socket sck; Socket acc; IPEndPoint ipe; List<Socket> lstClient = new List<Socket>(); Thread handleClient; string myIP = ""; public void IP() { IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName()); foreach (IPAddress address in host.AddressList) { if (address.AddressFamily.ToString() == "InterNetwork") { myIP = address.ToString(); } } ipe = new IPEndPoint(IPAddress.Parse(myIP), 2001); sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP); } private void btnListen_Click(object sender, EventArgs e) { this.Form1_Load(sender, e); } private void rtbMain_KeyPress(object sender, KeyPressEventArgs e) { e.Handled = true; } private void Form1_Load(object sender, EventArgs e) { IP(); handleClient = new Thread(new ThreadStart(Listen)); handleClient.IsBackground = true; handleClient.Start(); } public void Listen() { sck.Bind(ipe); sck.Listen(3); while(true) { Socket acc=sck.Accept(); lstClient.Add(acc); Thread clientProcess = new Thread(myThreadClient); clientProcess.IsBackground = true; clientProcess.Start(acc); rtbMain.SelectionFont = new Font("Arial", 18, FontStyle.Bold); rtbMain.SelectionColor = Color.Green; rtbMain.AppendText("accept connections from" + acc.RemoteEndPoint.ToString()); rtbMain.ScrollToCaret(); } } private void myThreadClient(object obj) { Socket clientACC = (Socket)obj; while(true) { byte[] sizeBuf = new byte[1024]; int rec = clientACC.Receive(sizeBuf); foreach (Socket acc in lstClient) { acc.Send(sizeBuf,sizeBuf.Length,SocketFlags.None); } } }

This is the first time I have used Windows Form application to do a socket server / client.

I have ran into a problem with my Socket.bind(IPEndpoint) under my public void Listen(). I get the error

Only one usage of each socket address (protocol/network address/port) is normally permitted

Any ideas how I could go about fixing this?

public Form1() { CheckForIllegalCrossThreadCalls = false; InitializeComponent(); } Socket sck; Socket acc; IPEndPoint ipe; List<Socket> lstClient = new List<Socket>(); Thread handleClient; string myIP = ""; public void IP() { IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName()); foreach (IPAddress address in host.AddressList) { if (address.AddressFamily.ToString() == "InterNetwork") { myIP = address.ToString(); } } ipe = new IPEndPoint(IPAddress.Parse(myIP), 2001); sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP); } private void btnListen_Click(object sender, EventArgs e) { this.Form1_Load(sender, e); } private void rtbMain_KeyPress(object sender, KeyPressEventArgs e) { e.Handled = true; } private void Form1_Load(object sender, EventArgs e) { IP(); handleClient = new Thread(new ThreadStart(Listen)); handleClient.IsBackground = true; handleClient.Start(); } public void Listen() { sck.Bind(ipe); sck.Listen(3); while(true) { Socket acc=sck.Accept(); lstClient.Add(acc); Thread clientProcess = new Thread(myThreadClient); clientProcess.IsBackground = true; clientProcess.Start(acc); rtbMain.SelectionFont = new Font("Arial", 18, FontStyle.Bold); rtbMain.SelectionColor = Color.Green; rtbMain.AppendText("accept connections from" + acc.RemoteEndPoint.ToString()); rtbMain.ScrollToCaret(); } } private void myThreadClient(object obj) { Socket clientACC = (Socket)obj; while(true) { byte[] sizeBuf = new byte[1024]; int rec = clientACC.Receive(sizeBuf); foreach (Socket acc in lstClient) { acc.Send(sizeBuf,sizeBuf.Length,SocketFlags.None); } } }