[BitTorrent] Tracker scrape extension proposal

Olaf van der Spek OvdSpek at LIACS.NL
Thu Jan 13 12:25:55 EST 2005

Nick Johnson wrote:
> On 13/01/2005, at 1:07 PM, Harold Feit - Depthstrike.com Administrator 
> wrote:
>>If you're scraping for 100 torrents, you may be better off just
>>getting the full scrape anyway. As wrong as the behavior appears for
>>multiple info_hash values, the way that it is handled is fairly
>>consistent across different archtypes of trackers (although is more
>>dependent on the archtypes of programming styles). Additional
>>trackers will be supporting this in the near future.
> This isn't such a good idea when the tracker has literally thousands of 
> torrents, though. I'd really like to see an extension that has at least 

1000 torrents would result in 32 kb of 'real' info. That's assuming 
bencoding overhead is compressed away.
100 single-scrape requests/responses already use 50 kb (IP/TCP/HTTP 
So a full-scrape might be the best option.

> semi-official support, and for which the fallback behaviour when not 
> supported is all torrents, rather than a single one. If you request 
> multiple hashes, it makes no sense for a client not supporting the 
> feature to return only a single one of them. :/
> -Nick Johnson

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