help regarding advanced protocol settings in purple account in libpurple

[swagat mishra]

hi,
i am developing an IM client using libpurple to connect to takl.google.com.
when i connect to gtalk using pidgin i specify the following settings under
the advanced tab:
protocol:xmpp
in advanced tab:
require ssl/tls
force old port(5223)ssl
connect port:443
connect server:talk.google.com
Proxy:No Proxy

how can i specify these settings in my program.i think it has to be done in
the settings field of purpleaccount structure,but how?
the source code i am using is from the site:
http://libpurple.com/writing-your-first-instant-messaging-program/
thanks.
swagat
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