How do i open a TcpClient with local port number 7777?

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You probably want to ask why.
Because in order to talk to a certain hardware device,
It will only respond to my requests if the source computer uses port 7777.

I'm using VB2005, ya, it's old.

Here is a smattering of my code.

VB

Dim tcpClient As New System.Net.Sockets.TcpClient()
       tcpClient.Connect("192.168.1.4", 2000)
       Dim networkStream As NetworkStream = tcpClient.GetStream()
       If networkStream.CanWrite And networkStream.CanRead Then
           ' Send some data.
           Dim sendBytes As [Byte]() = Encoding.ASCII.GetBytes("IE") & Chr(13)
           networkStream.Write(sendBytes, 0, sendBytes.Length)

Would i somehow use the following?

VB

Dim localEP As System.Net.EndPoint = "192.168.1.10:7777"
tcpClient.Client.Bind(localEP)

Posted 2-Dec-11 9:34am

jestal

Updated 2-Dec-11 9:36am

Wendelius

v2

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2 solutions

Solution 1

Just connect to the remote system like this :

C#

tcpClient.Connect("192.168.1.10", 7777)

Posted 2-Dec-11 18:30pm

Mehdi Gholam

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jestal · Accepted Answer · 2011-12-04T13:59:00

Thanks,
It seems i tried that and had some problem with it.
Yesterday i found this code that worked.
Dim localIP As IPAddress = IPAddress.Parse("192.168.1.17")
Dim localPort As Int16 = 7775
Dim remoteIP As IPAddress = IPAddress.Parse("192.168.1.46")
Dim remotePort As Int16 = 7777
Dim remoteEP As IPEndPoint = New IPEndPoint(remoteIP, remotePort)
Dim localEP As IPEndPoint = New IPEndPoint(localIP, localPort)
Dim client As TcpClient = New TcpClient(localEP)
client.Connect(remoteEP)