[Freeswitch-users] Hostname vs IP in SDP

[Brian West]

You should NOT be setting advertised_rtp_ip, We use a V4 profile or aV6
profile, you can't mix and match, doing so would probably not work at all.

On Wed, Aug 3, 2016 at 8:53 AM, Colin Morelli <colin.morelli at gmail.com>
wrote:

> Interesting. So far it has worked on all clients except WebRTC. It seems
> strange to me that putting a hostname in an SDP wouldn't be allowed, but
> it's far from the weirdest thing I've seen in some these specs.
>
> I'm fine with having IPs in the SDP for pretty much all cases, except for
> the iPhone where it is supposedly necessary to not use IP literals. So I
> guess I have two questions then:
>
> 1. Is there a way in FS to explicitly set an advertised IP address through
> a channel var? Actually, in this case I would just define a few options in
> vars.xml and then use expansion. Something like,
> advertised_rtp_ip=${local_ipv4} or advertised_rtp_ip=${local_ipv6}
>
> 2. How are people deciding whether to advertise IPv4/IPv6 if FS *isn't* handling
> registrations. Say, for example, Kamailio handles registrations. FS only
> knows if it'll talk to Kamailio via 4 or 6, but not what Kamailio will use
> to talk to the clients. Is there a best practice here for supporting dual
> stack?
>
> Best,
> Colin
>
> On Wed, Aug 3, 2016 at 1:13 AM Michael Jerris <mike at jerris.com> wrote:
>
>> I have not once in my life seen someone use a hostname instead of an ip
>> in an sdp, and I do not believe it is legal.
>>
>> > On Aug 2, 2016, at 1:00 PM, Colin Morelli <colin.morelli at gmail.com>
>> wrote:
>> >
>> > Hey all,
>> >
>> > So it looks like WebRTC has issues dealing with hostnames in the SDP
>> instead of IP addresses. Particularly, when including a hostname in the SDP
>> there's no audio in either direction. This is the case in both the latest
>> Firefox + Chrome browsers.
>> >
>> > This is particularly problematic for applications that are WebRTC +
>> mobile, now that Apple is enforcing applications to support IPv6-only
>> networks. Using hostnames in the record-route and SDP addresses meets the
>> requirement since the OS will synthesize an IPv6 address when a DNS query
>> is performed, but according to the documentation they strongly urge
>> applications to avoid using address literals in their applications.
>> >
>> > Has anyone had success with methods to switch between advertising a
>> hostname vs IP address in the SDP? Or other methods for solving this
>> problem?
>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.cluecon.com
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
>>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>



-- 

*Brian West*
brian at freeswitch.org


*Twitter: @FreeSWITCH , @briankwest*
http://www.freeswitchbook.com
http://www.freeswitchcookbook.com
https://www.gofundme.com/freeswitch_ubuntu

Got Bugs? Report them here <https://freeswitch.org/jira>! | Reddit:
/r/freeswitch <https://www.reddit.com/r/freeswitch>

*T:*+19184209001 | *F:*+19184209002 | *M:*+1918424WEST (9378)
*iNUM:*+883 5100 1420 9001 | *ISN:*410*543 | *Skype:*briankwest
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20160803/81a40ce6/attachment-0001.html