Sending a string using TcpClient in vb.net

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tcp
vb.net

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Sending a string using TcpClient in vb.net

My tcp client has made a connection to the server script! Now that it has connected, how can it send a simple string? I do not know what any of the overloads for the .Client.Send method even mean, or how to use them. I already have a system set up on the server side to parse the string when it is received on the server side, but I have no idea how to send a simple string to it.

Thanks for the help!

This is in vb.net by the way.

+1 A:

This article should point you in the right direction :)

Chris Thompson 2009-09-13 02:22:40

Any way to do it without streamwriters or whatever they are called? Is there any simple way to send a string, preferable in one line of code?

Cyclone 2009-09-13 02:25:25

I made a streamwriter, which writes to the tcpclient stream, but nothing is showing up on the serverside.

Cyclone 2009-09-13 02:35:18

You need to get the bytes of the string, which can be done to the Encoding.ASCII.GetBytes() method and write it to the stream with networkStream.Write(sendBytes, 0, sendBytes.Length)

Chris Thompson 2009-09-13 02:57:42

Okay. Now I am having connection issues however, would Dim srv As TcpListener = New TcpListener(9999) work? When the client tries to connect, it recieves a big ol' error.

Cyclone 2009-09-13 03:05:28

It connects now, and it does work, but here is my issue: While the server waits for a response from the client, it cannot do anything, at all, and the client is totally useless since it always sends. How can I make the server ALWAYS listen, without lagging? The client I can fix by rigging it up to my UI.

Cyclone 2009-09-13 03:15:55

You will need to code the server to spawn a new thread to handle the connection and then put the server in an infinite loop that waits for connections, spawns a thread, and returns to waiting for a connection. So, you will need to spawn a thread and pass it the object returned from this line (from the link above) Dim tcpClient As TcpClient = tcpListener.AcceptTcpClient(). That thread will handle anything that needs to be done with that specific connection

Chris Thompson 2009-09-13 05:30:26

Okay, thanks!

Cyclone 2009-09-13 15:24:59

ansaurus

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Sending a string using TcpClient in vb.net

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