Re: Re: [ilugd] Implementing SIP protocol

> 
> Anyways, my query is how to go about implementing
> things from an RFC.
> Obviously, reading it is one important task, but
> what else do we have
> to take care of? What programming style shall we
> follow... build &
> fix/ prototyping/ etc.

 First thing you need is to draw requirement
specification. Go through the RFC and draw all the
cases possible in the protocol negotiation i.e draw
the state machine for the protocol.
 As a  first step build a simple server and a simple
client. The client and server should only be able to
connect and say "hello" to each other i.e first thing
you should implement is succesful connection and error
report in case of failed connection.

 Once you have sucessful connection, you can work on
transmitting and receiving data over the connection.
Also, remember in a protocol issues such as error
reporting and security are integral part of
development (instead being a seprate layer), you are
supposed to take care of them from the very begining.
> 
> Anyone on this list tried something similar (not on
> SIP, but on any
> other protocol) ?
> ie, starting from the RFC & building up the things.

 Used to be my day job in erstwhile 2003.

Regards
VK

=====
Hug the REALITY ;-)



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