multi thread client & server

Hello,

I want to make my client & server fully working. If a client connects to the server it should tell that there is a new client connected. if a client disconnects it should tell me a client disconnected.

server code:

Code:

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Imports System.Net
Imports System.Net.Sockets
Imports System.Threading

Public Class clsServerSocket

    Public TextSent As String = ""                                              'De verzonden tekst
    Public ConnectedClients As List(Of TcpClient)                              'De list met clients
    Public Listener As TcpListener                                              'Ontvangt clients
    Protected IsCreatedWithSubNew As Boolean = False                            'Om te controleren of New() is aangeroepen
    Private t As New Thread(AddressOf _start)                                  'De thread om clients te ontvangen, _Start is de sub om uit te voeren in een andere thread
    Private _started As Boolean                                                'opslaan of de thread gestart is

    Public ReadOnly Property started() As Boolean 'property om te zorgen dat Started read-only is
        Get
            Return _started
        End Get
    End Property 'started()

    Public Sub New()

        'Listener = New TcpListener(IPAddress.Parse(IP), Port) '
        Listener = New TcpListener(IPAddress.Parse("0.0.0.0"), Port)
        ConnectedClients = New List(Of TcpClient)
        IsCreatedWithSubNew = True

    End Sub 'new()

    Public Sub start()
        If t.IsAlive Then Exit Sub 'om te vookomen dat de server 2 keer gestart wordt
        If Not IsCreatedWithSubNew Then
            MsgBox("Public Sub New() not used", MsgBoxStyle.Exclamation, "Error")
            Exit Sub
        End If 'not iscreatedwithsubnew
        t.Start()
        Me._started = True

    End Sub 'start()

    Public Sub _start()
        Try
            Listener.Start()
            While True
                Dim NewClient As TcpClient = Listener.AcceptTcpClient
                ConnectedClients.Add(NewClient)

                AddText("Connection received from: ")

            End While 'while true
        Catch ex As ThreadAbortException
            Exit Sub
        End Try 'listener.start...end while
    End Sub

    Public Sub abort()
        t.Abort()
        End 'abort()
    End Sub

    Public Sub SendDataTo(ByVal Index As Integer, ByVal Data As String)

        If Not Me.started Then Exit Sub

        Try

            For Each connectedclient In Server.ConnectedClients

                Dim writer As New NetworkStream(connectedclient.Client)

                If writer.CanWrite Then

                    Dim buff(Index) As Byte

                    Dim buffer(connectedclient.SendBufferSize) As Byte
                    buffer = System.Text.ASCIIEncoding.ASCII.GetBytes("test")
                    writer.Write(buffer, 0, buffer.Length)

                End If


            Next


        Catch ex As Exception

        End Try

    End Sub

End Class

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client code:

Code:

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Public Class ClientSocket

    Public ClientSocket As TcpClient


    Public Sub Start()

        ClientSocket = New TcpClient

        Try

            If Not Connected() Then
                ClientSocket.Connect(Options.IP, Options.Port)
                AddTextToPatcher("Succesfully connected to: {" & Options.IP & "/" & Options.Port & "}")
            Else
                AddTextToPatcher("Already connected")
            End If

        Catch ex As Exception

            AddTextToPatcher("Failed to connect to: {" & Options.IP & "/" & Options.Port & "}")
            AddTextToPatcher("because of reason; " & ex.Message)

        End Try


    End Sub

    Public Function Connected() As Boolean

        Return ClientSocket.Connected

    End Function

End Class

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I start the server with

Code:

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    Public Server As New clsServerSocket
Server.start

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and i connect the client with

Code:

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        Dim cl As New ClientSocket

        cl.Start()

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it says in my patcher window(where it should add the text) that it's succesfully connected.

but at the server side its not saying there is a new client connected/disconnected, how can I do this?

You might like to follow the CodeBank link in my signature and check out my Asynchronous TCP thread. It's not exactly the same scenario as yours but you should still be able to get some ideas on the multi-threading side of things, which is also built into the Socket class.

Quote:

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Originally Posted by jmcilhinney

You might like to follow the CodeBank link in my signature and check out my Asynchronous TCP thread. It's not exactly the same scenario as yours but you should still be able to get some ideas on the multi-threading side of things, which is also built into the Socket class.

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thanks !