Re: [Sip] Support for Multipart/MIME

[Paul Kyzivat <[e-mail]>]

Christer Holmberg (JO/LMF) wrote:

> My point was that you can't determine what types of MIME bodies you have
> simply by taking the whole SIP message and performing a string search on
> "Content-Type". Because, some of the Content-Types you will find may not
> describe what is in a MIME body - it may be part of the MIME body data.

All that you need to do is reduce unnecessary parsing to an acceptable 
degree. If all you care about is sdp, then it is probably sufficient to 
search the body for the string "application/sdp", and only parse the 
body looking for sdp if you find that. Now and then you may encounter a 
body that contains "application/sdp" without actually containing an 
offer or answer. But as long as that is rare there will probably be no 
problem.

This puts the optimization entirely on the parser without requiring any 
changes by those that add bodies. That is a good thing. It also keeps 
the size of the message from increasing further, which is also a good thing.

	Paul


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