[rtcweb] jsep-04 questions about phrasing

[Michael Procter <[e-mail]>]

Hi,

Section 5.2.2 Subsequent Offers

This section starts with the sentence "When createOffer is called a
second (or later) time,".  As far as I can tell, the rest of this
section applies both to subsequent offers created by the original
offerer and also offers created by the original answerer.  In this
second case, createOffer has never been called.  I would suggest
something like "When createOffer is called after the initial
offer/answer exchange,".

Section 5.2.2 11th bullet:

   o  The m= line and corresponding "a=rtpmap" and "a=fmtp" lines MUST
      only include codecs present in the remote description.

Is this necessary?  Can't we offer new codecs in a subsequent offer?
RFC3264 Sec 8.3.2 permits new codecs to be offered, old ones to be
removed etc, with the only constraint being to not reuse dynamic
payload types.

Finally, the two example SDPs both contain "s=-" whereas section 5.2.1
encourages "s= " instead. Personally, I prefer the hyphen, but
consistency is probably more important.

Regards,

Michael