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Perhaps if you made a few more threads about it, someone might help you

I've come across this problem myself... The problem is that TCPRecv is a non-blocking function, meaning it will return what data it has received so far instead of waiting for all of it, and since TCP is a stream-based protocol, there is no way for it to determine if your application's packet has been fully read by itself. Because of those two things I mentioned, what is happening is that when you call TCPRecv, it is only returning the data that has been sent to it so far (because sending data over a network is actually not instantaneous, it is just really fast). To fix this, you need to implement a receive buffer in your program. The buffer would temporarily hold the received data until your application has determined that the whole packet it is looking for has arrived. If speed is not an issue, the easiest way would just be to throw like a Sleep(100) in just above the TCPRecv call, giving your program just a bit more time to receive all of the data before you go to read it. This has it's drawbacks because it still has some corner-cases where it won't return all of the data, but it should fix most of them. If speed is an issue, then a more complex buffering system would have to be made...And I wouldn't mind helping with that if you were unable to figure out how to go about doing it. EDIT: Also forgot to mention that it isn't a problem with receiving null characters, the TCP functions don't seem to be null-terminated from my experience. SECOND EDIT: I whipped together a simple example to show what I mean by a receive buffer. This is a very basic "echo" server which listens for telnet connections, and when it gets them, it will echo back any message that you type as soon as you press the enter key. If you are using Microsoft's telnet client, this example will show exactly what I mean, since Microsoft's telnet client sends out letters as you type them. TCPStartup() Global $Listen = TCPListen("0.0.0.0", 1234) ;Listen on all addresses on port 1234 If @error Then ;Uh-oh! ConsoleWrite("Error! Couldn't listen for clients on port 1234! Is another instance of this example already running?" & @CRLF) Exit 1 ;Exit with error-code 1 EndIf While 1 Local $iSock = TCPAccept($Listen) ;Check for new connections If $iSock = -1 Then ContinueLoop ;If no new connections are present, go back to the top of the loop and check again ConsoleWrite("A new client has connected!" & @CRLF) ;A wild connection appears! Local $sBuffer = "" ;Create a local receive buffer variable While 1 ;Go in to a loop to read everything the client sends in to the buffer Local $sRecv = TCPRecv($iSock, 512) ;Write up to 512 characters at a time in to the buffer If @error Then ;If the client disconnected, stop right here and check for new clients again ConsoleWrite("Client has disconnected. Now waiting for more clients..." & @CRLF) ExitLoop EndIf If $sRecv = "" Then ContinueLoop ;Client sent no data, go check again... $sBuffer &= $sRecv ;Client did send data, throw this new data in to the buffer ConsoleWrite("Client sent: " & $sRecv & @CRLF) If StringInStr($sBuffer, @CRLF) Then ;If the client has sent an @CRLF (an enter button press), then do this TCPSend($iSock, "received: " & $sBuffer & @CRLF) ;Send their message they sent back to them $sBuffer = "" ;Empty the temporary buffer and start waiting for more data EndIf WEnd WEnd