Bittorrent Data Port Probe

Hello,

If I suspect that a particular port on a given host is listening for incoming Bittorrent data requests, is there a way I can prove it by means of a probe? I have attempted to find some protocol definition documentation so I can build a very basic script which will pretend to be another Bittorrent client to see how the application handles it, but I cannot find such detailed information.

If anybody can help with this, it would be much appreciated.

Regards,
Tom.

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