how many open ports/streams is too many?

Blitz3D Forums/Blitz3D Beginners Area/how many open ports/streams is too many?

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I'm trying to create my own 3D chatroom and I think it would be both less complex to program and reduce lag if I used 3 seperate ports/streams - one for sending movement, one for text, and one for file transfer...

Is it improper to use more than 1 port/stream per application or is this commonly done?