visual basic sockets: how to send msg and how to receive msg

hi -

i can code some basic VB applications. but i am not a professional VB prograamer. i am in desperately need to know, in VB, how to receive data from socket and how to send data to socket. this is a constantly running and checking socket in real time. if there are data in socket, go and get them; otherwise, send some data to socket. all data are ascii text form with linefeeds it it.

can someone please help me and give me some simple examples????

thank YOU!!!

G in nyc

hi zip10021nyc

I was working on that form yesterday but i didnot made it work I was doing that in vb.net [2005] ....


all i kbnow until now is we need to two app one server and one client ...

This what i did until now [server]

Code:

---

Option Strict Off
Imports System.Threading
Imports System.Net.Sockets
Imports System.Text

Public Class Form1
    Dim portno As Integer = 1000
    Dim client As New Hashtable()
    Dim hear As TcpListener









    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.Text = "server"
        Dim value As Boolean

        value = Control.CheckForIllegalCrossThreadCalls

        Control.CheckForIllegalCrossThreadCalls = False

        lisen()
        AddHandler Application.ThreadException, AddressOf therading_error
    End Sub
    Sub therading_error(ByVal sender As Object, ByVal e As System.Threading.ThreadExceptionEventArgs)
        MsgBox(e.Exception.Message)
     
    End Sub
    Sub lisen()
        hear = New TcpListener(portno)
        hear.ExclusiveAddressUse = True
        hear.Start()

        hear.BeginAcceptTcpClient(AddressOf connection, Nothing)





    End Sub
    Sub connection(ByVal ar As System.IAsyncResult)
        If ar.IsCompleted Then
            TextBox2.Text &= "Connction allowed" & vbCrLf
            hear.BeginAcceptTcpClient(AddressOf connection, Nothing)
        End If

    End Sub
   
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click


    End Sub
End Class

---

and this is for client

VB Code:

Imports System.Net.Sockets
Public Class Form1
    Const portno As Integer = 1000
    Dim listner As TcpClient
    Dim CheckForIllegalCrossThreadCalls() As Boolean
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.Text = "client"
        Dim value As Boolean
 
        value = Control.CheckForIllegalCrossThreadCalls
 
        Control.CheckForIllegalCrossThreadCalls = False
        listen()
        AddHandler Application.ThreadException, AddressOf therading_error
    End Sub
    Sub therading_error(ByVal sender As Object, ByVal e As System.Threading.ThreadExceptionEventArgs)
        MsgBox(e.Exception.Message)
 
    End Sub
 
 
    Function listen()
        listner = New TcpClient("localhost", portno)
 
        If listner.Connected Then
 
            RichTextBox1.Text = "connected " & vbCrLf
        ElseIf listner.Connected = False Then
            listner.Connect("localhost", portno)
            listner.SendBufferSize = 2
        Else
            MsgBox("canot  ")
        End If
 
        Dim write As New System.IO.StreamWriter(listner.GetStream)
        write.AutoFlush = True
        write.Write("CHAT|hi")
 
 
 
        
    End Function
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim byt(255) As Byte
        listner.GetStream.BeginWrite(byt, 0, 256, AddressOf Write, "hi")
    End Sub
    Sub Write(ByVal ar As IAsyncResult)
        If ar.IsCompleted Then
            RichTextBox1.Text &= "writecomple " & vbCrLf
        End If
    End Sub
 
End Class

if I devolp this I will tell u else if u did pls tell me