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TCP packet problems


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I've been trying to teach myself about TCP by writing a simple server/client application. The working code is at the bottom of the post.

The client "logs in" to the server, the server replies, and then the client sends ten numbers to the server. The server displays all its messages in a GUI window.

Now I need a little advice about the next step. The server checks for messages once every 2 seconds; the client sends one about once every 3-5 seconds. Because the client's loop is longer, the server never receives more than one message at a time.

Here is my question. If I want to send several pieces of information from the client to the server at the same time - in other words, if I want to replace these lines...

For $a = 1 to 10
    Sleep(Random(3000, 5000))
    TCPSend($Socket, TimerDiff($timestamp))
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