Paul, there is no space between colon and the rest of the call-id in the
original example provided. So UAC seems to be doing the right thing I think.
Call-ID: :VaT4082403130oFbc
<vat4082403130ofbcghefckco...@mscsma1.ims.mnc007.mcc748.3gppnetwork.org>...
-Max
On Thu., Aug. 13, 2020, 8:15 a.m. Paul Kyzivat, <pkyzi...@alum.mit.edu>
wrote:
> Pravin, Gaurav,
>
> On 8/13/20 5:34 AM, Pravin Kumar wrote:
> > Hi Gaurav,
> >
> > You can refer to RFC3261 Call-ID ABNF syntax section:
> >
> > [RFC3261 - page 228]
> >
> > Call-ID = ( "Call-ID" / "i" ) HCOLON callid
> > callid = word [ "@" word ]
> >
> > [RFC3261 - page221]
> >
> > word = 1*(alphanum / "-" / "." / "!" / "%" / "*" /
> > "_" / "+" / "`" / "'" / "~" /
> > "(" / ")" / "<" / ">" /
> > ":" / "\" / DQUOTE /
> > "/" / "[" / "]" / "?" /
> > "{" / "}" )
> >
> > If you observe here ":" is allowed in call-id irrespective to position.
> So
> > in your case UAS behaviour is not correct to remove the ":". -pravin
>
> I agree that colon is allowed in call-id, but whitespace is not. So it
> appears to me that the UAC has erred.
>
> Exactly what the UAS should do in this case is not defined. I would
> suggest you either:
>
> 1) reject the request with a 400 response
> 2) ignore the error and use the call-id as-is
>
> The fact that your uas ignored the colon suggests to me that its parser
> is acting in an unjustified way. (Ad hoc parsing?)
>
> Thanks,
> Paul
>
> > On Thu, Aug 13, 2020 at 2:30 PM Gaurav Khare <gaurav.kh...@onmobile.com>
> > wrote:
> >
> >> Hi,
> >>
> >> I have a specific problem relating to SIP header format.
> >>
> >> A UAC is sending Call-ID Header in INVITE as below
> >> Call-ID: :
> >> vat4082403130ofbcghefckco...@mscsma1.ims.mnc007.mcc748.3gppnetwork.org
> >>
> >> My UAS is sending 180 Ringing response as
> >> Call-ID:
> >> vat4082403130ofbcghefckco...@mscsma1.ims.mnc007.mcc748.3gppnetwork.org
> >> <mailto:
> >> vat4082403130ofbcghefckco...@mscsma1.ims.mnc007.mcc748.3gppnetwork.org>
> >>
> >> Notice the two colons in UAC request. In the response my stack is
> ignoring
> >> additional Colon(:) but the response is rejected by UAC. I am perplexed
> as
> >> to if colon(:) can be a part of Call-ID value or if two Colons(:) can
> occur
> >> sequentially delimiting Header name and value.
> >>
> >> If someone can point me to a Section of RFC, it will be very helpful.
> >>
> >> Thanks in advance,
> >> Gaurav Khare
> >>
> >>
> >>
> >> ________________________________
> >>
> >> DISCLAIMER: The information in this message is confidential and may be
> >> legally privileged. It is intended solely for the addressee. Access to
> this
> >> message by anyone else is unauthorized. If you are not the intended
> >> recipient, any disclosure, copying, or distribution of the message, or
> any
> >> action or omission taken by you in reliance on it, is prohibited and
> may be
> >> unlawful. Please immediately contact the sender if you have received
> this
> >> message in error. Further, this e-mail may contain viruses and all
> >> reasonable precaution to minimize the risk arising there from is taken
> by
> >> OnMobile. OnMobile is not liable for any damage sustained by you as a
> >> result of any virus in this e-mail. All applicable virus checks should
> be
> >> carried out by you before opening this e-mail or any attachment thereto.
> >> Thank you - OnMobile Global Limited.
> >> _______________________________________________
> >> Sip-implementors mailing list
> >> Sip-implementors@lists.cs.columbia.edu
> >> https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
> >>
> >
> >
>
> _______________________________________________
> Sip-implementors mailing list
> Sip-implementors@lists.cs.columbia.edu
> https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
>
_______________________________________________
Sip-implementors mailing list
Sip-implementors@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
