It proved practically to be:. Direct downloads may not seem such a complex deal in local network… That is until you have to distribute dozens and hundreds of gigabytes over links of variable quality and bandwidth. This post will cover practical setup of torrent file distribution for local network with minimal amount of time and scripting required. Script is made to accept list of hostnames. Create file with one hostname per line and launch process test several times before grand launch of course :.
Script will upload utorrent to target computer and instruct it to start download. In no time you have your own cloud of peer to peer nodes , working hard at efficiently spreading your file s through network. In this scheme I am using throwaway utorrent client without configuration.
To do this on regular basis it would be more efficient to deploy persistent uTorrent installations with configuration, enabled web interface and running as system service.
If Alice has L different neighbours, she will obtain L lists of chunks. With this knowledge, Alice will issue requests again over the TCP connections for chunks she currently does not have.
So at any given instant of time, Alice will have a subset of chinks and will know which chunks her neighbours have. With this information, Alice have two important decisions to make. First, which chunks should she request first from her neighbours? And second, to which of her neighbours should she send requested chunks? In deciding which chunks to request, Alice uses a technique called rarest first. The idea is to determine, from among the chunks she does not have, the chunks that are the rarest among her neighbours that is, the chunks that have the fewest repeated copies among her neighbours and then request those rarest chunks first.
In this manner, the rarest chunks get more quickly redistributed, aiming to roughly equalize the numbers of copies of each chunk in the torrent. To determine which requests she responds to , BitTorrent uses a clever trading algorithm. The basic idea is that Alice gives priority to the neighbours that are currently supplying their data at the highest rate. Specifically, for each of her neighbours, Alice continually measures the rate at which she receives bits and determines the four peers that are feeding her bits at the highest rate.
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