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Local Peer Discovery

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The Local Peer Discovery protocol, specified as BEP-14,[1] 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[2] with HTTP-like messages on User Datagram Protocol (UDP) multicast group 239.192.152.143:6771 which is an administratively scoped multicast address. Since implementation is simple, Local Peer Discovery is implemented in several clients (µTorrent,[3] BitTorrent/Mainline,[4] MonoTorrent,[5] libtorrent[6] and its derivatives, Transmission 2.0,[7] aria2 [8]). An alternative multicast peer discovery protocol is published as BEP 26, but is not widely adopted since it is considered too complex[9] in comparison.


References

  1. ^ "BEP 14: Local Service Discovery".
  2. ^ "Protocol Design Discussion » Local Peer Discovery Documentation". 2009-10-30. Retrieved 2009-12-12.
  3. ^ "Announcements » µTorrent 1.7 Release Candidate 6". 2007-06-28. Archived from the original on 2012-09-29. Retrieved 2009-12-12. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  4. ^ "BitTorrent User Manual". Archived from the original on 2009-12-27. Retrieved 2009-12-12. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  5. ^ "MonoTorrent 0.80". Retrieved 2010-05-05.
  6. ^ "libtorrent manual: features". Retrieved 2009-12-12.
  7. ^ "Changes : Transmission 2.00". 2010-06-15. Archived from the original on 2011-08-31. Retrieved 2010-06-23. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  8. ^ "Aria2 Manual: OPTIONS". Retrieved 2015-09-14.
  9. ^ "Transmission Bug Tracker: Zeroconf Peer Advertising and Discovery". Retrieved 2016-10-26.


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