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# Bittorrent - P2P filesharing / publishing tool - http://www.bittorrent.com
# Pattern attributes: good slow594 notsofast undermatch
# Protocol groups: p2p open_source
# Wiki: http://www.protocolinfo.org/wiki/Bittorrent
# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE
#
# This pattern has been tested and is believed to work well.
# It will, however, not work on bittorrent streams that are encrypted, since
# it's impossible to match (well) encrypted data.
bittorrent
# Does not attempt to match the HTTP download of the tracker
# 0x13 is the length of "bittorrent protocol"
# Second two bits match UDP wierdness
# Next bit matches something Azureus does
# Ditto on the next bit. Could also match on "user-agent: azureus", but that's in the next
# packet and perhaps this will match multiple clients.
# bitcomet-specific strings contributed by liangjun.
# This is not a valid GNU basic regular expression (but that's ok).
^(\x13bittorrent protocol|azver\x01$|get /scrape\?info_hash=get /announce\?info_hash=|get /client/bitcomet/|GET /data\?fid=)|d1:ad2:id20:|\x08'7P\)[RP]
# This pattern is "fast", but won't catch as much
#^(\x13bittorrent protocol|azver\x01$|get /scrape\?info_hash=)
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