Re: [Sip-implementors] Offer/answer model in early media with forking

2018-07-17 Thread Alex Balashov
On Mon, Jul 16, 2018 at 11:01:30PM -0400, Dale R. Worley wrote: > > Well, the first branch is disposed of with a 5xx reply. But the UAC > > cancels nothing, in spite of getting two different early responses > > from two different dialogs. > > You should have mentioned the 5xx reply in your origin

Re: [Sip-implementors] Offer/answer model in early media with forking

2018-07-16 Thread Dale R. Worley
Alex Balashov writes: > Due to the way the RTP relay works on the server side, this results in > two different SDP offers from the two respective outgoing branches being > sent back to the caller: > > 1. 183+SDP on branch #1. > > 2. 183+SDP' on branch #2. >200 OK+SDP' on branch #2. > > I am no

Re: [Sip-implementors] Offer/answer model in early media with forking

2018-07-16 Thread Alex Balashov
Well, the first branch is disposed of with a 5xx reply. But the UAC cancels nothing, in spite of getting two different early responses from two different dialogs. Granted, I haven't tried waiting around for 3 minutes or whatever the maximum prescribed early/alerting state is. On July 16, 2018

Re: [Sip-implementors] Offer/answer model in early media with forking

2018-07-16 Thread Paul Kyzivat
On 7/16/18 2:00 PM, Alex Balashov wrote: It should be noted that the UA with which I am testing (Freeswitch) does not CANCEL or otherwise hang up the first dialog. In this case, since the proxy did the forking, it SHOULD (MUST?) send a CANCEL. So it will probably be ok. Thanks,

Re: [Sip-implementors] Offer/answer model in early media with forking

2018-07-16 Thread Alex Balashov
It should be noted that the UA with which I am testing (Freeswitch) does not CANCEL or otherwise hang up the first dialog. On Mon, Jul 16, 2018 at 01:56:34PM -0400, Alex Balashov wrote: > Oh, yes — they're different dialogs, for sure. I just wasn't sure if > that would nevertheless pose a problem

Re: [Sip-implementors] Offer/answer model in early media with forking

2018-07-16 Thread Alex Balashov
Oh, yes — they're different dialogs, for sure. I just wasn't sure if that would nevertheless pose a problem for some low-budget UAs. On Mon, Jul 16, 2018 at 01:47:32PM -0400, Paul Kyzivat wrote: > On 7/16/18 1:17 PM, Alex Balashov wrote: > > Hi, > > > > I have a scenario where a call is forked t

Re: [Sip-implementors] Offer/answer model in early media with forking

2018-07-16 Thread Paul Kyzivat
On 7/16/18 1:17 PM, Alex Balashov wrote: Hi, I have a scenario where a call is forked through a proxy to an early media announcement server and then subsequently to a SIP provider for actual termination. Due to the way the RTP relay works on the server side, this results in two different SDP of

[Sip-implementors] Offer/answer model in early media with forking

2018-07-16 Thread Alex Balashov
Hi, I have a scenario where a call is forked through a proxy to an early media announcement server and then subsequently to a SIP provider for actual termination. Due to the way the RTP relay works on the server side, this results in two different SDP offers from the two respective outgoing branc