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.
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.