[BitTorrent] KEY tracker extension

Harold Feit - Depthstrike.com Administrator dwknight at depthstrike.com
Thu Dec 30 10:20:44 EST 2004


 
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Hash: SHA1

<exerpt from the apache logs on my test system>
127.0.0.1 - - [27/Dec/2004:01:25:25 -0400] "GET
/announce.php?info_hash=%3B0%182%A8%EF%AF%DD%FA%8EUy%80%96%CE%23J%CFx%
C7&peer_id=T020-----t0WCSgQ8Rdq&port=6881&uploaded=0&downloaded=0&left
=429986&no_peer_id=1&compact=1&event=stopped&key=ENEALM HTTP/1.0" 404
296 "-" "BitTorrent/T-0.2.0"
</exerpt>

peer_id would be the user name and key would be the password.
It was implemented to increase the difficulty of malicious peers from
changing the IP that the tracker stores helping to identify your
client.

- -----Original Message-----
From: John Hoffman [mailto:theshadow at shambala.net] 
Sent: Wednesday, December 29, 2004 4:32 PM
To: BitTorrent at yahoogroups.com
Subject: Re: [BitTorrent] KEY tracker extension


The concept behind the "key" extension in the tracker announce is
very 
simple.  The peer chooses it randomly and will send the same value
with 
each announce.  This allows the tracker to verify the contactee is
the 
same peer even if its IP has changed, and lets the tracker update
that 
information.

lazy_lightning_99 wrote:

>Is there some documentation around the KEY protocol extension?  I'm
>assuming this is another level of identification for peers behind
>NAT.  
>
>I tried searching this list, but quite frankly I can't think of
>anything more useless than Yahoo's message search feature.
>
>e
>  
>

- -- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.296 / Virus Database: 265.6.5 - Release Date: 12/26/2004
 

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