在vbnet中怎样实现一个服务端和多个客户端的通信，以下代码如何改.doc

在vb.net中怎样实现一个服务端和多个客户端的通信，以下代码如何改？ 1、服务端Imports System.NetImports System.Net.SocketsImports System.ThreadingImports System.TextImports System.Diagnostics??Public Class frmServer??? ???服务端的Socket? ???Dim listener As Socket? ???与客户端会话的Socket? ???Dim mySocket As Socket? ???服务端的运行状态? ???Dim IsRun As Boolean = False? ???监听接收数据线程? ???Dim myThread As Thread??? ???Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load? ?? ?? ?myThread = New Thread(AddressOf Listen)? ?? ?? ?myThread.Start()? ???End Sub??? ???Public Sub Listen()? ?? ?? ?Dim bytes() As Byte = New [Byte](1024) {}? ?? ?? ?Dim data As String = String.Empty? ?? ?? ?Dim tokens() As String??? ?? ?? ?Dim localEndPoint As New IPEndPoint(Net.IPAddress.Parse(127.0.0.1), 11000)? ?? ?? ?初始化socket? ?? ?? ?listener = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)? ?? ?? ?绑定端口? ?? ?? ?listener.Bind(localEndPoint)? ?? ?? ?开始监听? ?? ?? ?listener.Listen(10)??? ?? ?? ?BeginInvoke(New EventHandler(AddressOf AddInfo), 服务端已启动，正在等待连接......)??? ?? ?? ?mySocket = listener.Accept()? ?? ?? ?IsRun = True??? ?? ?? ?While True? ?? ?? ?? ? Dim bytesRec As Integer = mySocket.Receive(bytes)? ?? ?? ?? ? data = Encoding.UTF8.GetString(bytes, 0, bytesRec)??? ?? ?? ?? ? tokens = data.Trim.Split(|)? ?? ?? ?? ? Select Case tokens(0) 分析接收到的数据，可自己定义更多一些? ?? ?? ?? ?? ???Case Chat? ?? ?? ?? ?? ?? ?? ?BeginInvoke(New EventHandler(AddressOf AddInfo), tokens(1))??Invoke保证线程安全? ?? ?? ?? ?? ???Case Exit? ?? ?? ?? ?? ?? ?? ?IsRun = False? ?? ?? ?? ?? ?? ?? ?BeginInvoke(New EventHandler(AddressOf AddInfo), tokens(1))??Invoke保证线程安全? ?? ?? ?? ?? ?? ?? ?mySocket.Shutdown(SocketShutdown.Both)? ?? ?? ?? ?? ?? ?? ?mySocket.Close()? ?? ?? ?? ?? ?? ?? ?Exit Sub? ?? ?? ?? ? End Select? ?? ?? ?End While??? ???End Sub??? ???发送信息? ???Private Sub btnSend_Click(ByVal sender As