[SR-Users] Stupid NAT tricks to learn from Apple
miconda at gmail.com
Fri Sep 20 17:36:01 CEST 2013
On 9/20/13 5:15 PM, Kristian Kielhofner wrote:
> Hi Daniel,
> I know, shocking (heh)!
> The protocol violations were very slight - omitting SDP rtpmap lines
> for dynamic RTP payloads, omitting a=rtcp-mux for RTP+RTCP mux (but
> they're already muxing SIP too, so ehh). Possibly others.
ahh, ok, I remarked your notes about, but somehow I had in mind only the
SIP part (headers), not the SDP body. I was looking to see if they use
some custom format or not-specified values for headers...
> On Fri, Sep 20, 2013 at 10:19 AM, Daniel-Constantin Mierla
> <miconda at gmail.com> wrote:
>> interesting, thanks for sharing!
>> What else I could say, I am really deeply extremely ... (can't find other
>> words) ... shocked they don't use SIGCOMP specs [ha ha!]! I remember some
>> discussions when I said that usage of one well established compression
>> algoritm will get it done in few hours (implementatio wise) than what IETF
>> came up with in this regard. Sad but true, many IETF specs have no touch
>> with reality...
>> Maybe I missed while quick reading, what are the "various /slight/ protocol
>> violations" you spotted?
>> On 9/20/13 3:16 PM, Kristian Kielhofner wrote:
>>> I've been spending some time looking at some of the significant
>>> changes Apple has made to Facetime in iOS 7. I'm far from an Apple
>>> fanboy but some of them are pretty interesting:
>>> - multiplexing everything over a single UDP port
>>> - deflate compression with SIP
>>> - various /slight/ protocol violations ;)
>>> More here:
>>> As SDP bodies swell more and more can we hope to build significant
>>> support for multiplexing and deflate compression in the SIP-focused
>>> open source ecosystem?
>> Daniel-Constantin Mierla - http://www.asipto.com
>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Kamailio Advanced Trainings - Berlin, Oct 21-24; Miami, Nov 11-13, 2013
>> - more details about Kamailio trainings at http://www.asipto.com -
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users at lists.sip-router.org
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Trainings - Berlin, Oct 21-24; Miami, Nov 11-13, 2013
- more details about Kamailio trainings at http://www.asipto.com -
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