Few questions:
Is it realistic for a PRACK to carry an offer? Isnt PRACK usually supposed
to carry an answer to a 183 OFFER? In what scenarios can a PRACK actually
carry an OFFER? ( only if INVITE had no offer and one recieved a 180? )
Also if an INVITE carried an offer and the 183 carried back an answer,
wouldnt it be wrong for a PRACK to send back another OFFER in its SDP? Isnt
UPDATE used to do that kind of mid dialog change?
Also an Offer can be carried be any message in a transaction only if its an
initial offer right? Like INVITE already contained an offer then any
subsequent request in that transaction cannot carry another OFFER right? (
besdies UPDATE).
Thanks
Manpreet
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