[SR-Users] Fwd: [RAI] SIPit 28 summary

[Alex Balashov]

I wholeheartedly agree with Daniel's assessment.  3.x and 3.1.x have seen incredibly important feature gains that have been revolutionary for our work. It is true that a lot of the feature growth has been in internal/runtime capabilities of Kamailio as a pseudoprogrammatic execution environment, but so what?  The net benefit to implementors and users of features like configuration file splitting, new TM, rtimer, mqueue, HTTP server + XMLRPC, and many other things has been enormous.

Also, I strongly agree that the focus of the project should not be to go around chasing someone's novel, indecipherable IETF draft of the hour.  They come and go like influenza.  Note how many expired drafts were adopted by the market de facto immortally despite their expiration, like RPID, or, more often, completely ignored despite persistent attempts at standardisation.  As Daniel said, no relation to reality in a lot of them.  It becomes clear over a much longer period what should ultimately be supported, and watching the standards track is not a practical way to try to make that determination.

--
Alex Balashov - Principal
Evariste Systems LLC
260 Peachtree Street NW
Suite 2200
Atlanta, GA 30303
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On Apr 16, 2011, at 2:27 PM, Daniel-Constantin Mierla <miconda at gmail.com> wrote:

> 
> 
> On 4/16/11 7:30 PM, Olle E. Johansson wrote:
>> 16 apr 2011 kl. 15.59 skrev Iñaki Baz Castillo:
>> 
>>> 2011/4/15 Klaus Darilion<klaus.mailinglists at pernau.at>:
>>>> Support for various items in the proxy/registrars:
>>>>  50% path
>>>>  50% outbound
>>>>  33% sip/stun multiplexing
>>>>  20% diversion
>>>>  18% gruu
>>>>  17% history-info
>>>>  17% service-route
>>> Correct me if I'm wrong:
>>> 
>>> Items implemented in Kamailio/sip-router:
>>> - path
>>> - diversion
>>> 
>> Yes, Kamailio is behind and after focusing so much on the merger of the code I think it would be good to plan some new features for a coming release.
> I think this statement is not true. While a lot of work was indeed done on merging code, there were a lot of new featured added, much more than we had we previous major releases, many based on standardizations (e.g., presence extensions to conference, dialog info, xcap, a.s.o).
> 
> The the core supports processing stun, see ser_stun.{c,h} - the guys at ser added that very long time ago.
> 
> As for next release, there are lot of features added (http://sip-router.org/wiki/features/new-in-devel), more to come, but I think most of developers here got tired hunting the ghosts of IETF specs that never were any useful nor had a touch with the reality.
> 
> As of myself, I really work now on what is demanded, there is no time to jump and implement any rfc/draft published based on theories elaborated by guys that never implemented their specs. Moreover, some of them are now in different boat and make "incredible" statements about sip considering their role in the past with this protocol...
> 
> Cheers,
> Daniel
> 
>>  The issue is what of all the new SIP features we need. History-info seems useful for Asterisk, don't know how much it will affect Kamailio. Gruu, well. I haven't seen many implementations out there. I can theoretically see a need for it both in NAT situations and IPv6. Diversion is deprecated. Outbound is the final NAT traversal solution - which seems to be getting a lot of traction. Remember that there was very few participants in this SIPit so 50% is not a "market share" - far from it.
>> 
>> /O
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> 
> -- 
> Daniel-Constantin Mierla
> http://www.asipto.com
> 
> 
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