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Wireshark-bugs: [Wireshark-bugs] [Bug 3256] New dissector: gadu-gadu protocol

Date: Sun, 1 Mar 2009 16:22:21 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3256





--- Comment #6 from Guy Harris <guy@xxxxxxxxxxxx>  2009-03-01 16:22:20 PDT ---
The use of port 443 for Gadu-Gadu-over-TLS, as per

    http://osdir.com/ml/gnome.gaim.devel/2004-08/msg00015.html

is a bit odd; that port is officially assigned to HTTP-over-{SSL,TLS}, as per

    http://www.iana.org/assignments/port-numbers

Given that 443 is officially assigned to https, it's 100% inappropriate for any
other dissector to register for port 443.  Instead, we need some mechanism to
support heuristic SSL dissectors, and have the GG dissector register as a
heuristic SSL/TLS dissector on port 443.  (*All* the GG traffic over port 443,
starting with the GG_WELCOME message sent by the server to the client, is
transported over TLS, right?)

(By the way, this means that a given server can't simultaneously offer https
and GG-over-SSL, as the two servers can't both own port 443, right?)


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