TCPClient hangs on unresponsive IP

Hello everyone

I set up a program to send a message of "DISCONNECTCAMERA" to a certain IP address.
When it receives the message, it disconnects its webcam.
(i'm making a program like skype, and my friend's ip's are in My.settings)

The problem is that when i connect to an ip address that is unresponsive, i have to wait ages for the timeout to be reached.
Can you change the timeout so you dont have to wait to find out that it's unresponsive?

I tried My.Computer.Network.Ping(ipaddress, timeout) but that didn't work

My code:

Imports System.Net.Sockets
Imports System.IO
Public Class DisconnectAllCameras
    Dim Receiver As New TcpListener(65535)
    Dim Snder As New TcpClient
    Private Sub DisconnectAllCameras_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        Receiver.Stop()
        Snder.Close()
    End Sub
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        My.Computer.Network.Ping(My.Settings.Camera1IP)
        Receiver.Start()
        SendMessage(My.Settings.IP, "DISCONNECTCAMERA")
       End If
    End Sub
    Function SendMessage(ByVal IP As String, ByVal Message As String)
        Snder = New TcpClient(IP, 65535)
        Dim Writer As New StreamWriter(Snder.GetStream())
        Writer.Write(Message)
        Writer.Flush()
        If My.Settings.Camera1IP = IP Then
            Label1.Text = "Camera 1 : Offline"
            PictureBox1.Image = My.Resources.tick
        End If
        If My.Settings.Camera2IP = IP Then
            Label2.Text = "Camera 2 : Offline"
            PictureBox2.Image = My.Resources.tick
        End If
        If My.Settings.Camera3IP = IP Then
            Label3.Text = "Camera 3 : Offline"
            PictureBox3.Image = My.Resources.tick
        End If
        If My.Settings.Camera4IP = IP Then
            Label4.Text = "Camera 4 : Offline"
            PictureBox4.Image = My.Resources.tick
        End If
    End Function
    Private Sub MessageReceiver_Tick() Handles MessageReceiver.Tick
        If Receiver.Pending = True Then
            Snder = Receiver.AcceptTcpClient()
            Dim Reader As New StreamReader(Snder.GetStream())
            Dim Message As String = ""
            While Reader.Peek > -1
                Message &= Convert.ToChar(Reader.Read()).ToString
            End While
            MsgBox(Message)
        End If
    End Sub
End Class

Tags: Visual Basic, TCP/IP