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# Tencent QQ Protocol - Chinese instant messenger protocol - http://www.qq.com
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# Pattern attributes: good notsofast fast
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# Protocol groups: chat
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# Wiki: http://www.protocolinfo.org/wiki/QQ
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# Copyright (C) 2008 Matthew Strait, Ethan Sommer; See ../LICENSE
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#
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# Over six million people use QQ in China, according to wsgtrsys.
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#
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# This pattern has been tested and is believed to work well.
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#
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# QQ uses three (two?) methods to connect to server(s?).
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# one is udp, and another is tcp
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# udp protocol: the first byte is 02 and last byte is 03
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# tcp protocol: the second byte is 02 and last byte is 03
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# tony on protocolinfo.org says that now the *third* byte is 02:
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# "but when I tested on my PC, I found that when qq2007/qq2008
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# use tcp protocol, the third byte instead of the second is always 02.
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#
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# So the QQ protocol changed again, or I have made a mistake, I wonder
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# that."
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# So now the pattern allows any of the first three bytes to be 02. Delete
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# one of the ".?" to restore to the old behaviour.
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# pattern written by www.routerclub.com wsgtrsys
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qq
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^.?.?\x02.+\x03$
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