Local Peer Discovery
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 (IPv4) or ff15::efc0:988f (IPv6)[1] which are administratively scoped multicast addresses. 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,[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
- ↑ 1.0 1.1 "BitTorrent Enhancement Proposal 14: Local Service Discovery". 29 October 2015. http://bittorrent.org/beps/bep_0014.html.
- ↑ "Protocol Design Discussion » Local Peer Discovery Documentation". 2009-10-30. http://forum.utorrent.com/topic/54306-local-peer-discovery-documentation/.
- ↑ "Announcements » μTorrent 1.7 Release Candidate 6". 2007-06-28. http://forum.utorrent.com/viewtopic.php?id=25655.
- ↑ "BitTorrent User Manual". http://www.bittorrent.com/btusers/guides/bittorrent-user-manual/appendix-bittorrent-mainline-interface/preferences/bittorrent#Basic_BitTorrent_Features.Enable_Local_Peer_Discovery.
- ↑ "MonoTorrent 0.80". http://projects.qnetp.net/news/show/6.
- ↑ "libtorrent manual: features". http://www.rasterbar.com/products/libtorrent/features.html.
- ↑ "Release Notes: Transmission 2.00". 2010-06-15. https://github.com/transmission/transmission/blob/master/NEWS.md#transmission-200-2010-06-15.
- ↑ "Aria2 Manual: OPTIONS". http://aria2.sourceforge.net/manual/en/html/aria2c.html#options.
- ↑ "Transmission Bug Tracker: Zeroconf Peer Advertising and Discovery". https://trac.transmissionbt.com/ticket/1394#comment:13.
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