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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 networks (LANs).
It is designed to support the discovery and utilisation of local data caches by BitTorrent peers, typically set up by ISPs wishing to minimise the impact of BitTorrent traffic on their network. The Cache Discovery Protocol was originally developed jointly by BitTorrent, Inc. and CacheLogic and first implemented in version 4.20 of the official ...
A BitTorrent tracker is a special type of server that assists in the communication between peers using the BitTorrent protocol.. In peer-to-peer file sharing, a software client on an end-user PC requests a file, and portions of the requested file residing on peer machines are sent to the client, and then reassembled into a full copy of the requested file.
Mainline DHT is the name given to the Kademlia-based distributed hash table (DHT) used by BitTorrent clients to find peers via the BitTorrent protocol. The idea of using a DHT for distributed tracking in BitTorrent was first implemented [1] [2] in Azureus 2.3.0.0 (now known as Vuze) in May 2005, from which it gained significant popularity.
It allows torrent-file creation and peer exchange compatible with Vuze and μTorrent. It includes a built-in web server so that users can control Transmission remotely via the web. [ 10 ] It also supports automatic port-mapping using UPnP / NAT-PMP , peer caching, blocklists for bad peers , bandwidth limits dependent on time-of-day, globally or ...
In file sharing, super-seeding is an algorithm developed by John Hoffman for the BitTorrent communications protocol that helps downloaders become uploaders more quickly, but it introduces the danger of total seeding failure if there is only one downloader. [citation needed] The algorithm applies when there is only one seed in the swarm.
libtorrent is an open-source implementation of the BitTorrent protocol. It is written in and has its main library interface in C++.Its most notable features are support for Mainline DHT, IPv6, HTTP seeds and μTorrent's peer exchange. libtorrent uses Boost, specifically Boost.Asio to gain its platform independence.
Peer exchange cannot be used on its own to introduce a new peer to a swarm. To make initial contact with a swarm, each peer must either connect to a tracker using a ".torrent" file, or else use a router computer called a bootstrap node to find a distributed hash table (DHT) which describes a swarm's list of peers. For most BitTorrent users, DHT ...