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# Bittorrent - P2P filesharing / publishing tool - http://www.bittorrent.com
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# Pattern attributes: good slow notsofast undermatch
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# Protocol groups: p2p open_source
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# Wiki: http://www.protocolinfo.org/wiki/Bittorrent
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# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE
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#
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# This pattern has been tested and is believed to work well.
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# It will, however, not work on bittorrent streams that are encrypted, since
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# it's impossible to match (well) encrypted data.
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bittorrent
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# Does not attempt to match the HTTP download of the tracker
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# 0x13 is the length of "bittorrent protocol"
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# Second two bits match UDP wierdness
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# Next bit matches something Azureus does
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# Ditto on the next bit. Could also match on "user-agent: azureus", but that's in the next
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# packet and perhaps this will match multiple clients.
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# bitcomet-specific strings contributed by liangjun.
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# This is not a valid GNU basic regular expression (but that's ok).
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^(\x13bittorrent protocol|azver\x01$|get /scrape\?info_hash=get /announce\?info_hash=|get /client/bitcomet/|GET /data\?fid=)|d1:ad2:id20:|\x08'7P\)[RP]
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# This pattern is "fast", but won't catch as much
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#^(\x13bittorrent protocol|azver\x01$|get /scrape\?info_hash=)
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