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/etc/l7-protocols/protocols/pplive.pat is in l7-protocols 20090528-4.

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# PPLive - Chinese P2P streaming video - http://pplive.com
# Pattern attributes: ok notsofast notsofast
# Protocol groups: p2p streaming_video proprietary
# Wiki: http://www.protocolinfo.org/wiki/PPLive
# Copyright (C) 2008 Matthew Strait; See ../LICENSE

# By liangjun, who says that it works.  It may be easily improvable with 
# a bit more testing.

pplive
\x01...\xd3.+\x0c.$