Local Peer Discovery

The Local Peer Discovery protocol is an extension to the BitTorrent file-distribution system. It is designed to support the discovery of local BitTorrent peers, aiming to minimize the traffic through the Internet service provider's (ISP) channel and maximize use of higher-bandwidth local area network (LAN).

Local Peer Discovery is implemented[1] with HTTP-like messages on User Datagram Protocol (UDP) multicast group 239.192.152.143:6771 which is an administratively scoped multicast address. While it is implemented in several clients (µTorrent,[2] BitTorrent/Mainline,[3] MonoTorrent,[4] libtorrent[5] and its derivatives, Transmission 2.0,[6] aria2 [7]) and implementation is very simple, no formal specification had been created as of December, 2009. Alternative multicast protocol extension is published as BEP 26.

References

  1. ↑ "Protocol Design Discussion » Local Peer Discovery Documentation". 2009-10-30. Retrieved 2009-12-12.
  2. ↑ "Announcements » µTorrent 1.7 Release Candidate 6". 2007-06-28. Retrieved 2009-12-12.
  3. ↑ "BitTorrent User Manual". Retrieved 2009-12-12.
  4. ↑ "MonoTorrent 0.80". Retrieved 2010-05-05.
  5. ↑ "libtorrent manual: features". Retrieved 2009-12-12.
  6. ↑ "Changes : Transmission 2.00". 2010-06-15. Retrieved 2010-06-23.
  7. ↑ "Aria2 Manual: OPTIONS". Retrieved 2015-09-14.


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