Re: [Sip-implementors] Reflection of non-registered SDP attributes

2019-01-31 Thread Paul Kyzivat
On 1/30/19 10:23 PM, Dale R. Worley wrote: It's a fascinating problem. In a way, inserting a unregistered attribute is forbidden, but any recipient is forbidden from objecting to it. OTOH, if the attribute is unregistered, you can't really say that the endpoint using it in its answer is

Re: [Sip-implementors] Reflection of non-registered SDP attributes

2019-01-30 Thread Alex Balashov
On Wed, Jan 30, 2019 at 10:23:21PM -0500, Dale R. Worley wrote: > Perhaps the endpoint simply means "I received CustomAttribute:GID in > the offer." Yep, that's the interpretive frame in which I was contemplating the problem. -- Alex Balashov | Principal | Evariste Systems LLC Tel:

Re: [Sip-implementors] Reflection of non-registered SDP attributes

2019-01-30 Thread Dale R. Worley
It's a fascinating problem. In a way, inserting a unregistered attribute is forbidden, but any recipient is forbidden from objecting to it. OTOH, if the attribute is unregistered, you can't really say that the endpoint using it in its answer is *wrong*, since there's no fixed definition of the

Re: [Sip-implementors] Reflection of non-registered SDP attributes

2019-01-29 Thread Mike Coffee
du Subject: Re: [Sip-implementors] Reflection of non-registered SDP attributes Hello, On Tue, Jan 29, 2019 at 11:21:01AM -0500, Paul Kyzivat wrote: > 5.13 says: "Attributes MUST be registered with IANA", so why do you > say this isn't illegal? Upon reflection, you are certainly corre

Re: [Sip-implementors] Reflection of non-registered SDP attributes

2019-01-29 Thread Paul Kyzivat
On 1/29/19 11:29 AM, Alex Balashov wrote: Hello, On Tue, Jan 29, 2019 at 11:21:01AM -0500, Paul Kyzivat wrote: 5.13 says: "Attributes MUST be registered with IANA", so why do you say this isn't illegal? Upon reflection, you are certainly correct. I suppose the notion of legality I had in

Re: [Sip-implementors] Reflection of non-registered SDP attributes

2019-01-29 Thread Alex Balashov
Hello, On Tue, Jan 29, 2019 at 11:21:01AM -0500, Paul Kyzivat wrote: > 5.13 says: "Attributes MUST be registered with IANA", so why do you > say this isn't illegal? Upon reflection, you are certainly correct. I suppose the notion of legality I had in mind was implicitly to do with grammatical

Re: [Sip-implementors] Reflection of non-registered SDP attributes

2019-01-29 Thread Paul Kyzivat
On 1/29/19 10:21 AM, Alex Balashov wrote: Hi, I am using a media relay which implements some internal loop detection by adding a non-IANA-registered SDP attribute to any offer or answer that passes through it: a=CustomAttribute:GUID From what I understood from RFC 4566 § 5.13, this isn't

[Sip-implementors] Reflection of non-registered SDP attributes

2019-01-29 Thread Alex Balashov
Hi, I am using a media relay which implements some internal loop detection by adding a non-IANA-registered SDP attribute to any offer or answer that passes through it: a=CustomAttribute:GUID >From what I understood from RFC 4566 § 5.13, this isn't illegal, but such an attribute must be