[Freeswitch-users] Update DNS SRV records

Tue Jun 25 12:51:38 UTC 2019

Wow, that’s a pretty cool hack - kudos for this idea.

But I think the problem needs to be solved in Sofia SIP - I’m facing the same issue with Deutsche Telekom SIP-Trunk and FreeSWITCH.

[x] me too

br
Henning

> Am 25.06.2019 um 08:36 schrieb Kai Danielmeier <kai.danielmeier at gmail.com>:
> 
> Basically I solved the problem by working around it with a hangup hook. In it I check the call disposition and if it is 403 I restart the gateway and then retry the call. Not the most perfect solution, but does the job and I do not have to manually restart any gateways. We had cases where the IP change for the server happened several times daily, which was very annoying.
> 
> BR
> 
> Kai
> 
> Am Mo., 24. Juni 2019 um 16:51 Uhr schrieb Sebastian Denz <denzs at gonicus.de <mailto:denzs at gonicus.de>>:
> I didnt see your post before, so i opened a topic for propably the same
> issue today... i am preparing a test setup right now to reproduce it
> with the current git-HEAD and then i'll open an issue in Jira...
> 
> Best regards,
> Sebastian
> 
> Am 6/18/19 um 9:05 AM schrieb Paul Muaddib:
> > Hi,
> > 
> > slowly it becomes annoying. Since a few days I need to reload the gateway
> > profile twice a day to refresh the SRV records. I found out that my SIP
> > Provider "Deutsche Telekom" updated their Documentation of their SIP Trunk.
> > 
> > Perhaps interesting for others. Here is the updated PDF
> > https://geschaeftskunden.telekom.de/blobCache/umn/uti/457678_1548405575000/blobBinary/SIP-Trunk-Technische-Unterlage.ps <https://geschaeftskunden.telekom.de/blobCache/umn/uti/457678_1548405575000/blobBinary/SIP-Trunk-Technische-Unterlage.ps>
> > 
> > The document also includes a section on DNS and SRV. Can someone tell me if
> > I can make changes in the configuration based on the following information
> > so that the SRV records are updated correctly?
> > 
> > Best regards,
> > 
> > ############
> > 
> > Domain and IP address recognition and resolution on the SIP trunk interface
> > is performed via DNS servers.
> > 
> > In the registration mode, the IP address, transport and port of the server
> > are determined according to RFC 3263 and SIPConnect 2.0 16.1 "Locating SIP
> > Servers".
> > 
> > According to RFC 3263, the SIP-PBX performs a NAPTR query for the domain
> > names:
> > - reg.sip-trunk.telekom.de <http://reg.sip-trunk.telekom.de/>.
> > - stat.sip-trunk.telekom.de <http://stat.sip-trunk.telekom.de/>
> > 
> > and receives the records with the protocols supported by the domain name
> > (in case of a SIP trunk usage of the TLS via TCP and TCP protocol depending
> > on whether the client uses TLS or not).
> > 
> > Since the protocol has been determined, an IP address and port must also be
> > determined, as described in RFC 3263, Chapter 5, and an SRV query is sent
> > to the record returned by the NAPTR. Finally, the client performs an
> > A-Record lookup on these records to obtain the IP addresses of the servers.
> > The destination node selection is the SIP-PBX behavior (SIPconnect 2.0,
> > Chapter 17.1 for Register Mode and Chapter 16.1 for Static Mode).
> > 
> > A lookup to these domain names is not possible. Therefore a lookup with
> > some tools (e.g. nslookup under some Windows versions) does not lead to
> > success, because these only make an A-Record query by default!
> > The correct query order is therefore
> > - NAPTR on reg.sip-trunk.telekom.de <http://reg.sip-trunk.telekom.de/>
> > - SRV to a record of the NAPTR response
> > - A to a record of the SRV response
> > 
> > Success also leads:
> > - SRV on reg.sip-trunk.telekom.de <http://reg.sip-trunk.telekom.de/>
> > 
> > - A to a record of the SRV response
> > 
> > Does not lead to success:
> > - A on reg.sip-trunk.telekom.de <http://reg.sip-trunk.telekom.de/>
> > 
> > Attention: With many PBXs, setting the port (e.g. to 5060) leads to a
> > behavior in which only the A record is queried, which then fails. A
> > NAPTR/SRV query is only performed if the port is set to "0". (The
> > background is that the SRV query provides the port, i.e. the port cannot be
> > set to a fixed value in advance).
> > 
> > ############
> > 
> > 
> > 
> > Am Di., 7. Mai 2019 um 13:42 Uhr schrieb Paul Muaddib <
> > paul.muaddib83 at gmail.com <mailto:paul.muaddib83 at gmail.com>>:
> > 
> >> How can I check the TTL of the SRV register?
> >>
> >> Am Di., 7. Mai 2019 um 12:36 Uhr schrieb Raúl Alexis Betancor Santana <
> >> rbetancor at gmail.com <mailto:rbetancor at gmail.com>>:
> >>
> >>> The only way you have is to tell FS to "reload" that provider gw profile.
> >>>
> >>> You should check the TTL of that provider SRV registers as may be a
> >>> problem on their end, not updating them correctly.
> >>>
> >>> On Tue, May 7, 2019 at 10:25 AM Paul Muaddib <paul.muaddib83 at gmail.com <mailto:paul.muaddib83 at gmail.com>>
> >>> wrote:
> >>>
> >>>> Hi Lawrence,
> >>>>
> >>>> I think that you want to know how to tell your fS to re-lookup the SRV
> >>>>> records for that gateway's domain while running, as the SRV records in that
> >>>>> provider's DNS changes regularly.
> >>>>>
> >>>>> I can't help on the details of fS's DNS lookup code, but is that the
> >>>>> actual problem you have and so the question you want to ask?
> >>>>>
> >>>>
> >>>> Yes, that is my problem.
> >>>>
> >>>> Am Di., 7. Mai 2019 um 00:07 Uhr schrieb Lawrence Conroy <
> >>>> lconroy at insensate.co.uk <mailto:lconroy at insensate.co.uk>>:
> >>>>
> >>>>> Hi
> >>>>>  They may do; they may not. It's hard to tell when the question is that
> >>>>> confusing.
> >>>>>
> >>>>> 1. IIUC, fS doesn't update local DNS records at all.
> >>>>> (it could, but you'd need to write something external to do the DNS
> >>>>> update).
> >>>>>
> >>>>> 2. you talk of not being able to call OUT.
> >>>>> That's good, as it means there is no need to update your domain's DNS
> >>>>> records.
> >>>>>
> >>>>> I assume that what you mean is that your provider changes its SRV
> >>>>> records every couple of days.
> >>>>> You have a gateway entry in your fS config for that provider.
> >>>>> That gateway spec has a defined domain name for the server.
> >>>>> I think that you want to know how to tell your fS to re-lookup the SRV
> >>>>> records for that gateway's domain while running, as the SRV records in that
> >>>>> provider's DNS changes regularly.
> >>>>>
> >>>>> I can't help on the details of fS's DNS lookup code, but is that the
> >>>>> actual problem you have and so the question you want to ask?
> >>>>>
> >>>>> br,
> >>>>>   Lawrence
> >>>>>
> >>>>>
> >>>>> On 6 May 2019, at 21:04, Paul Muaddib <paul.muaddib83 at gmail.com <mailto:paul.muaddib83 at gmail.com>> wrote:
> >>>>>
> >>>>>> Really nobody with the same problem?
> >>>>>>
> >>>>>> Am Do., 2. Mai 2019 um 11:23 Uhr schrieb Paul Muaddib <
> >>>>> paul.muaddib83 at gmail.com <mailto:paul.muaddib83 at gmail.com>>:
> >>>>>> Hi,
> >>>>>>
> >>>>>> how can I tell freeswitch to update the SRV records or is there a way
> >>>>> to force the update without restarting. My provider keeps changing the
> >>>>> entries after a few days and if I don't restart freeswitch I can not call
> >>>>> out anymore (403)
> >>>>>>
> >>>>>> Best regards
> >>>>>>
> >>>>> _________________________________________________________________________
> >>>>>>
> >>>>>> The FreeSWITCH project is sponsored by SignalWire
> >>>>> https://signalwire.com <https://signalwire.com/>
> >>>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
> >>>>> services.
> >>>>>> Build your next product on our scalable cloud platform.
> >>>>>>
> >>>>>> Join our online community to chat in real time
> >>>>> https://signalwire.community <https://signalwire.community/>
> >>>>>>
> >>>>>> Professional FreeSWITCH Services
> >>>>>> sales at freeswitch.com <mailto:sales at freeswitch.com>
> >>>>>> https://freeswitch.com <https://freeswitch.com/>
> >>>>>>
> >>>>>> Official FreeSWITCH Sites
> >>>>>> https://freeswitch.com/oss <https://freeswitch.com/oss>
> >>>>>> https://freeswitch.org/confluence <https://freeswitch.org/confluence>
> >>>>>> https://cluecon.com <https://cluecon.com/>
> >>>>>>
> >>>>>> FreeSWITCH-users mailing list
> >>>>>> FreeSWITCH-users at lists.freeswitch.org <mailto:FreeSWITCH-users at lists.freeswitch.org>
> >>>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users <http://lists.freeswitch.org/mailman/listinfo/freeswitch-users>
> >>>>>> UNSUBSCRIBE:
> >>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users <http://lists.freeswitch.org/mailman/options/freeswitch-users>
> >>>>>> https://freeswitch.com <https://freeswitch.com/>
> >>>>>
> >>>>>
> >>>>>
> >>>>> _________________________________________________________________________
> >>>>>
> >>>>> The FreeSWITCH project is sponsored by SignalWire
> >>>>> https://signalwire.com <https://signalwire.com/>
> >>>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
> >>>>> services.
> >>>>> Build your next product on our scalable cloud platform.
> >>>>>
> >>>>> Join our online community to chat in real time
> >>>>> https://signalwire.community <https://signalwire.community/>
> >>>>>
> >>>>> Professional FreeSWITCH Services
> >>>>> sales at freeswitch.com <mailto:sales at freeswitch.com>
> >>>>> https://freeswitch.com <https://freeswitch.com/>
> >>>>>
> >>>>> Official FreeSWITCH Sites
> >>>>> https://freeswitch.com/oss <https://freeswitch.com/oss>
> >>>>> https://freeswitch.org/confluence <https://freeswitch.org/confluence>
> >>>>> https://cluecon.com <https://cluecon.com/>
> >>>>>
> >>>>> FreeSWITCH-users mailing list
> >>>>> FreeSWITCH-users at lists.freeswitch.org <mailto:FreeSWITCH-users at lists.freeswitch.org>
> >>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users <http://lists.freeswitch.org/mailman/listinfo/freeswitch-users>
> >>>>> UNSUBSCRIBE:
> >>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users <http://lists.freeswitch.org/mailman/options/freeswitch-users>
> >>>>> https://freeswitch.com <https://freeswitch.com/>
> >>>>
> >>>> _________________________________________________________________________
> >>>>
> >>>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com <https://signalwire.com/>
> >>>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
> >>>> services.
> >>>> Build your next product on our scalable cloud platform.
> >>>>
> >>>> Join our online community to chat in real time
> >>>> https://signalwire.community <https://signalwire.community/>
> >>>>
> >>>> Professional FreeSWITCH Services
> >>>> sales at freeswitch.com <mailto:sales at freeswitch.com>
> >>>> https://freeswitch.com <https://freeswitch.com/>
> >>>>
> >>>> Official FreeSWITCH Sites
> >>>> https://freeswitch.com/oss <https://freeswitch.com/oss>
> >>>> https://freeswitch.org/confluence <https://freeswitch.org/confluence>
> >>>> https://cluecon.com <https://cluecon.com/>
> >>>>
> >>>> FreeSWITCH-users mailing list
> >>>> FreeSWITCH-users at lists.freeswitch.org <mailto:FreeSWITCH-users at lists.freeswitch.org>
> >>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users <http://lists.freeswitch.org/mailman/listinfo/freeswitch-users>
> >>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users <http://lists.freeswitch.org/mailman/options/freeswitch-users>
> >>>> https://freeswitch.com <https://freeswitch.com/>
> >>>
> >>> _________________________________________________________________________
> >>>
> >>> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com <https://signalwire.com/>
> >>> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN
> >>> services.
> >>> Build your next product on our scalable cloud platform.
> >>>
> >>> Join our online community to chat in real time
> >>> https://signalwire.community <https://signalwire.community/>
> >>>
> >>> Professional FreeSWITCH Services
> >>> sales at freeswitch.com <mailto:sales at freeswitch.com>
> >>> https://freeswitch.com <https://freeswitch.com/>
> >>>
> >>> Official FreeSWITCH Sites
> >>> https://freeswitch.com/oss <https://freeswitch.com/oss>
> >>> https://freeswitch.org/confluence <https://freeswitch.org/confluence>
> >>> https://cluecon.com <https://cluecon.com/>
> >>>
> >>> FreeSWITCH-users mailing list
> >>> FreeSWITCH-users at lists.freeswitch.org <mailto:FreeSWITCH-users at lists.freeswitch.org>
> >>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users <http://lists.freeswitch.org/mailman/listinfo/freeswitch-users>
> >>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users <http://lists.freeswitch.org/mailman/options/freeswitch-users>
> >>> https://freeswitch.com <https://freeswitch.com/>
> >>
> >>
> > 
> > 
> > _________________________________________________________________________
> > 
> > The FreeSWITCH project is sponsored by SignalWire https://signalwire.com <https://signalwire.com/>
> > Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
> > Build your next product on our scalable cloud platform.
> > 
> > Join our online community to chat in real time https://signalwire.community <https://signalwire.community/>
> > 
> > Professional FreeSWITCH Services
> > sales at freeswitch.com <mailto:sales at freeswitch.com>
> > https://freeswitch.com <https://freeswitch.com/>
> > 
> > Official FreeSWITCH Sites
> > https://freeswitch.com/oss <https://freeswitch.com/oss>
> > https://freeswitch.org/confluence <https://freeswitch.org/confluence>
> > https://cluecon.com <https://cluecon.com/>
> > 
> > FreeSWITCH-users mailing list
> > FreeSWITCH-users at lists.freeswitch.org <mailto:FreeSWITCH-users at lists.freeswitch.org>
> > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users <http://lists.freeswitch.org/mailman/listinfo/freeswitch-users>
> > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users <http://lists.freeswitch.org/mailman/options/freeswitch-users>
> > https://freeswitch.com <https://freeswitch.com/>
> > 
> 
> 
> _________________________________________________________________________
> 
> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com <https://signalwire.com/>
> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
> Build your next product on our scalable cloud platform.
> 
> Join our online community to chat in real time https://signalwire.community <https://signalwire.community/>
> 
> Professional FreeSWITCH Services
> sales at freeswitch.com <mailto:sales at freeswitch.com>
> https://freeswitch.com <https://freeswitch.com/>
> 
> Official FreeSWITCH Sites
> https://freeswitch.com/oss <https://freeswitch.com/oss>
> https://freeswitch.org/confluence <https://freeswitch.org/confluence>
> https://cluecon.com <https://cluecon.com/>
> 
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org <mailto:FreeSWITCH-users at lists.freeswitch.org>
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users <http://lists.freeswitch.org/mailman/listinfo/freeswitch-users>
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users <http://lists.freeswitch.org/mailman/options/freeswitch-users>
> https://freeswitch.com <https://freeswitch.com/>_________________________________________________________________________
> 
> The FreeSWITCH project is sponsored by SignalWire https://signalwire.com
> Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services.
> Build your next product on our scalable cloud platform.
> 
> Join our online community to chat in real time https://signalwire.community
> 
> Professional FreeSWITCH Services
> sales at freeswitch.com
> https://freeswitch.com
> 
> Official FreeSWITCH Sites
> https://freeswitch.com/oss
> https://freeswitch.org/confluence
> https://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
> https://freeswitch.com

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