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See more: VB VB.NET udp
Hi people

I know i've posted something similar to this before, but it's a completely different question.

The problem is, that with the following code, port 54545 does not work. The code is intended to send a message via the port variable to the IP address.
I want the code to be able to, for example, send a message to you, the one reading this, if you have the receiver program (which has to be anywhere in the world, providing you have a network connection)

Imports System.Net
Imports System.Net.Sockets
Imports System.Threading
Imports System.Text
Public Class Form1
    Private Const port As Integer = 54545
    Dim RecipientIPAddress As String = Nothing ' for local network
    Private sendingClient As UdpClient
    Private Sub SendMsgButton_Click() Handles SendMsgButton.Click
        RecipientIPAddress = IPToSendToTextbox.text 'for example,
    End Sub
    Private Sub InitializeSender()
        sendingClient = New UdpClient(RecipientIPAddress, port)
        sendingClient.EnableBroadcast = True
    End Sub
    Public toSend As String
    Dim data() As Byte
    Public Shared Sub go() = Encoding.ASCII.GetBytes(form1.toSend)
    End Sub
   end class

Things I know about the problem:

* UDPClient Ports range from 5454[2-5]
* Port 80 doesn't work

Does anyone know a port number that will work for this?

Posted 11-Apr-13 0:13am

1 solution

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Solution 1

Any port number not in use should work, your problem might be a firewall blocking the traffic.
Rixterz123 11-Apr-13 5:26am
Thanks, but i'll wait for some more replies before i look into it.
I have a code that puts my program in the exceptions list in the firewall; if I run this, will it allow the port?

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