Comments inline..
On Mon, 20 Aug 2001 Sunil Kumar T wrote :
>Hi,
>
>I'm stuck with the following two while developing
>parser for SIP. Could someone
>please help us.
>
>1) warn-agent in Warning
>-------------------
>The syntax is
>(host["."port])| pseudonym
>
>when the port is absent(it is optional), a qualified
>host is always a qualified
>pseudonym. So, how to differenticate both in the
>incoming SIP message.
I don't think it is very important to differentiate between the fields as it is put
there mainly for debugging purposes as mentioned in bis-03.
Another question though - why is it that in Section 20.7 of bis-03, the warn-agent
field is not even a part of the warning header?
>
>2) Timestamp header
>----------------
>The syntax is
>*(DIGIT)["." *(DIGIT)][delay]
>delay = *(DIGIT)["." *(DIGIT)]
>
>Assuming [delay] is present, what is the separator
>between *(DIGIT)["."
>*(DIGIT)] and [delay] above. Also, when ["." *(DIGIT)]
>is absent in the first
>half, what is the separator between *(DIGIT) and [delay]
Bis-03 says "The server MUST echo the exact same value
in all provisional and final responses and MAY, if it has accurate information about
this, add a floating point number indicating the number of seconds that have elapsed
since it has received the request."
I believe that the delay parameter is appended to the timestamp, as it is specified
that the exact same value myst be echoed. So, a separator is not necessary.
However, it also says "add a floating point number" and hence the doubt remains.
Either my understanding is wrong, or these two points may be clarified in the text.
Regards,
Deepak
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