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Is there a difference between the way trackers are listed in a torrent


galacticninja

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Is there a difference between the way trackers are listed and their order in a torrent's tracker list? Is there an optimal way of listing the trackers?

What is the difference if the tracker list is written like this:

(this is the way trackers are listen in many popular torrent indexers I've encountered)

http://tracker.openbittorrent.com/announce

udp://tracker.openbittorrent.com:80/announce

http://tracker.publicbt.com/announce

udp://tracker.publicbt.com:80/announce

this:

http://tracker.openbittorrent.com/announce
udp://tracker.openbittorrent.com:80/announce

http://tracker.publicbt.com/announce
udp://tracker.publicbt.com:80/announce

and this:

udp://tracker.openbittorrent.com:80/announce

udp://tracker.publicbt.com:80/announce

Also, is there a difference if the http link of a tracker is listed on top of the udp tracker and vice-versa in the tracker list?

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Thanks for the link and the LMGTFY-like response.

Did I understand the article correctly if I say that in the first example in my original post above, all trackers will be processed, regardless if it's HTTP or UDP, since they are not grouped into tiers? And that in the second example, uTorrent will choose a random tracker for each tier (either UDP or HTTP) and choose the first one that connects succesfully; and in the third example, only the UDP trackers will be used, as UDP trackers are the only one listed?

Am I also correct if I say that the third example is the best one to use, as this makes uTorrent connect to the more optimal UDP trackers?

The article states that: "This specification is for John Hoffman's proposed extension to the BitTorrent metadata format. This extension has not been officially adopted into the main BitTorrent metadata specification as of this writing." Does uTorrent follow the implementation mentioned in the article?

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Am I also correct if I say that the third example is the best one to use, as this makes uTorrent connect to the more optimal UDP trackers?

Considering how inflexible and non-modular UDP trackers are, they are NOT optimal for use. The second type is the "more optimal" one to use, not the third one.

You ONLY ever group tiers when the trackers share peer data regardless.

uTorrent announces to all tiers at once, The official multitracker specification says to only announce to one tier at a time.

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Am I also correct if I say that the third example is the best one to use, as this makes uTorrent connect to the more optimal UDP trackers?

Considering how inflexible and non-modular UDP trackers are, they are NOT optimal for use. The second type is the "more optimal" one to use, not the third one.

I take it that this applies for trackers that offer both HTTP and UDP URLs.

I recently checked OpenBitTorrent's site: http://openbittorrent.com/ and PublicBitTorrent's site: http://www.publicbt.com/

It seems that both trackers' websites now show to add only the UDP trackers. Should I configure the tracker lists, if they contain OpenBitTorrent and PublicBitTorrent trackers, to only list their UDP trackers?

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