UDP Probe

[Valentine]

I use Vuze & when a download is finished I see OK UDP Probe. What is it & is it really necessary as it seems like some kind of tracking intrusion. If not needed how to get rid of it? Thx

[RichCor]

See this post for a thin, if not cryptic, description of your question:

Vuze Dev Blog: UDP Auto-Probing

"One of our wonderful features is getting some much needed love. We (specifically, The_8472, kudos to him) introduced this feature in a beta build back in January, 2008

...

"With this feature enabled, we do a UDP check on first scrape or announce to http trackers. If that fails, we fall back to the http request and exponentially retry UDP in future scrapes/announces. If it succeeded, we store that information for later sessions.

We are always looking for ways to reduce bandwidth. If you have any suggestions, please feel free to post them on our forums.

According to Wikipiedia: The UDP tracker protocol is a high-performance low-overhead BitTorrent tracker protocol. It uses the stateless User Datagram Protocol (UDP) for data transmission instead of the HTTP protocol (over TCP) regular trackers use. The data is in a custom binary format instead of the standard bencode algorithm BitTorrent uses for most communication. ... The UDP tracker is better optimized and puts less strain on the tracking server. Neither tracker has any effect on transfer speeds.

Your Vuse client is the one doing the probing, or 'check' for UDP. It's not an issue.