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Is there any documentation about "Local Peer Discovery" that would allow inter-client interoperability ?
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http://download.utorrent.com/utorrent-help.zip and search for LPD:
LPD (Local Peer Discovery)
A method by which µTorrent attempts to discover new peers local relative to your computer's network. Local Peer Discovery makes use of IP multicast.
And some googling:
http://www.superjason.com/archive/2007/ … ature.aspx
http://www.bittorrent.com/btusers/guide … _Discovery
And why should that feature be interchangeable?
It just indicates peers within you network by IP or ISP.
Last edited by schnurlos (2009-10-30 01:34:44)
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... Louif isn't asking what LPD is -- he's asking for implementation details on LPD so that other clients can also implement it.
@Louif: There are no public specs that I know of.
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in short: join the multicast group 239.192.152.143:6771 and listen for SSDP messages. Every 5 minutes, announce yourself to the multicast group by sending this message:
snprintf(msg, 200,
"BT-SEARCH * HTTP/1.1\r\n"
"Host: 239.192.152.143:6771\r\n"
"Port: %d\r\n"
"Infohash: %s\r\n"
"\r\n\r\n", listen_port, ih_hex);
listen port is the port you accept incoming bittorrent connections on, ih_hex is the info hash of the torrent hex encoded.
more details:
http://libtorrent.svn.sourceforge.net/v … iew=markup
If you'd like to write a BEP for this (to be published on bittorrent.org), please send it to editor@bittorrent.org and I can put it up.
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Thanks, this is very interesting information. I think I will be submitting a BEP, but I still need some time to think about this.
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Interesting -- so you're using a protocol that's not BEP-26.
Last edited by jch (2009-11-02 15:33:24)
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I don't believe anyone ever implemented BEP26.
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Not necessarily an excuse, but to be fair...
--- 2007-04-05: Version 1.7 (build 1065)
- Feature: Local Peer Discovery
http://bittorrent.org/beps/bep_0026.html wrote:
Created: 10-May-2008
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