Network Communication

[CHronologist]

I browsed the forum several times but found nothing like my problem. I was trying to write a simple application that should be able to communicate through the network. So I have to programms and each transmitts his data to the other one. I tried a lot, but nothing worked. Router port is forwarded. Here my idea how it was intended:

Server

UDPStartup()
$socket = UDPBind($IP, $port)
Do
    $clientip = UDPRecv($socket, 1024)
until $clientip <> ""
$connection = UDPOpen($clientip, $port)
UDPSend($connection, "ok")

Client

UDPStartup()
$socket = UDPOpen($IP, $port)
$connection = UDPBind(_GetIP(), $port)
UDPSend($socket, _GetIP())

The idea was to start the Server, this opens a socket, waits for an incoming file. Then you start the Client, that creates a connection and an open socket, then transmitts his IP to the Server, so that the Server can establish a connection to the Client. Sending data from the Client to the Server works, but not the oter direction. Thanks for every constuctive comment.

[flip209]

I do not see a UDPRecv for the client

[CHronologist]

$comm = UDPRecv($connection, 1024)

Something like that what I posted was just the initiation part of the connetions.

[CHronologist]

ok problem found, seemed like I used wrong sockets while using TCP functions. delete or close or so