OK, here is the new text that will be in -04, which is hopefully clearer. I
added some examples too. Below is the latex source, so if you don't know
latex, just ignore all the \whatever{} stuff:
\item \header{user} or \header{telephone-subscriber}, \header{password},
\header{host}, \header{port} and any \header{url-parameter} parameters
of the URI must match. If one of the components in the previous
sentence is omitted, it matches based on its default value. (For
example, otherwise equivalent URLs without a port specification and
with port 5060 match.) URL parameters (which excludes
\header{telephone-subscriber}, \header{password}, and \header{port})
not found in both URLs being compared, for which there is no default
value, are ignored, and therefore not included in the comparison
operation. Other URL components not found in both URLs being compared,
for which there is no default value, are included in the comparison
operation, and the result will be that the URLs do not match.
\item Characters other than those in the ``reserved'' and ``unsafe''
sets (see RFC 2396 \cite{rfc2396}) are equivalent to their ``"\%" HEX
HEX'' encoding.
\item An IP address that is the result of a DNS lookup of a host name
does \textbf{not} match that host name.
\item URL parameters that have no default value are compared only if
they are present in both URLs.
\end{itemize}
Thus, the following URLs are equivalent:
\begin{verbatim}
sip:juser@%65xample.com:5060
sip:[EMAIL PROTECTED];Transport=udp
\end{verbatim}
while
\begin{verbatim}
SIP:[EMAIL PROTECTED];Transport=udp
sip:[EMAIL PROTECTED];Transport=UDP
\end{verbatim}
are not.
The following URLs are also equivalent:
\begin{verbatim}
sip:[EMAIL PROTECTED];foo=baz
sip:[EMAIL PROTECTED]
\end{verbatim}
while
\begin{verbatim}
sip:[EMAIL PROTECTED]
sip:domain.com
\end{verbatim}
are not.
-Jonathan R.
---
Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Ave.
Chief Scientist First Floor
dynamicsoft East Hanover, NJ 07936
[EMAIL PROTECTED] FAX: (973) 952-5050
http://www.jdrosen.net PHONE: (973) 952-5000
http://www.dynamicsoft.com
> -----Original Message-----
> From: Jonathan Rosenberg [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, June 12, 2001 12:06 PM
> To: 'Deepak Mohan'; [EMAIL PROTECTED]
> Cc: [EMAIL PROTECTED]
> Subject: RE: [Sip-implementors] missing User and URL Comparison in
> bis-03
>
>
>
>
>
>
> > -----Original Message-----
> > From: Deepak Mohan [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, June 12, 2001 12:02 AM
> > To: [EMAIL PROTECTED]
> > Cc: [EMAIL PROTECTED]
> > Subject: Re: [Sip-implementors] missing User and URL Comparison in
> > bis-03
> >
> >
> > Bryan,
> > 1. Component does not have a default value.
> > 2. Component is present only in ONE of the URLs to be compared.
> > So, the urls do not match.
> >
>
> I don't know how you came to that conclusion. By "ignored",
> it means that
> this component is not included in the matching operation.
>
> Anyway, the URLs:
>
> sip:foo.com
> sip:[EMAIL PROTECTED]
>
> are NOT equal. The reason is that the user portion of the SIP
> URL is NOT a
> url-parameter.
>
> Look carefully at the text:
>
> user or telephone-subscriber, password, host, port and any
> url-parameter
> parameters of the URI
> must match. If a component is omitted, it matches based on its default
> value. (For example, otherwise
> equivalent URLs without a port specification and with port
> 5060 match.)
> Components not found in
> both URLs being compared, for which there is no default
> value, are ignored.
>
>
> notice the text "and any url-parameter parameters of the URI
> must match".
> So, we are talking here about things which are part of the
> url-parameter
> BNF, which are delineated with semi-colon. This does NOT include the
> username, port, password, or domain.
>
> Perhaps people are confused by the term "component", which I
> will change to
> "url parameter".
>
> -Jonathan R.
>
>
> > ------------- Original Message --------------
> > BRYAN OGAWA <[EMAIL PROTECTED]> wrote:
> > To:[EMAIL PROTECTED]
> > From:BRYAN OGAWA <[EMAIL PROTECTED]>
> > Date:Mon, 11 Jun 2001 16:17:07 -0700 (PDT)
> > Subject: [Sip-implementors] missing User and URL Comparison
> in bis-03
> >
> >
> > in the bis-03 draft, the following paragraph was added to
> section 2.1:
> >
> > user or telephone-subscriber, password, host, port and any
> > url-parameter
> > parameters of the URI must match. If a component is
> > omitted, it matches
> > based on its default value. (For example, otherwise
> equivalent URLs
> > without a port specification and with port 5060 match.)
> > Components not
> > found in both URLs being compared, for which there is no
> > default value,
> > are ignored.
> >
> > The first time I read this paragraph, I was left with the
> notion that
> > since user is optional, and does not have a default value, the last
> > sentence would be in effect, e.g.
> >
> > sip:example.com
> >
> > and
> >
> > sip:[EMAIL PROTECTED]
> >
> > match.
> >
> > This might not be considered the most obvious result, and probably
> > should be flagged if it is true.
> >
> > --
> > Bryan K. Ogawa <[EMAIL PROTECTED]> http://www.vovida.org/
> >
> > _______________________________________________
> > Sip-implementors mailing list
> > [EMAIL PROTECTED]
> > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
> >
> > _____________________________________________________
> > Chat with your friends as soon as they come online. Get
> Rediff Bol at
> > http://bol.rediff.com
> >
> >
> >
> >
> > _______________________________________________
> > Sip-implementors mailing list
> > [EMAIL PROTECTED]
> > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
> >
>
> ---
> Jonathan D. Rosenberg, Ph.D. 72 Eagle Rock Ave.
> Chief Scientist First Floor
> dynamicsoft East Hanover, NJ 07936
> [EMAIL PROTECTED] FAX: (973) 952-5050
> http://www.jdrosen.net PHONE: (973) 952-5000
> http://www.dynamicsoft.com
> _______________________________________________
> Sip-implementors mailing list
> [EMAIL PROTECTED]
> http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
>
_______________________________________________
Sip-implementors mailing list
[EMAIL PROTECTED]
http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
