[Blink] Blink not connecting SIP account
Lars Noodén
lars.nooden at gmail.com
Thu Jan 5 14:59:20 CET 2017
On 01/05/2017 03:55 PM, Dan Pascu wrote:
[snip]
> According to the logs, their DNS name server seems to be the culprit. Half the time it replies, half the time it times out. I can see Blink did register, but then failed to publish presence or initiate a call.
>
> This excerpt shows the issue (this is just for the SRV records, but I noticed it does the same for every record type: A, NAPTR, TXT):
>
> 2017-01-05 14:35:33.924633 [blink 18271]: DNS lookup SRV _sips._tcp.sip2sip.info. failed: no DNS response received, the query has timed out
> 2017-01-05 14:35:33.932106 [blink 18271]: DNS lookup SRV _sips._tcp.sip2sip.info. failed: no DNS response received, the query has timed out
> 2017-01-05 14:35:33.971674 [blink 18271]: DNS lookup SRV _sip._tcp.sip2sip.info. succeeded, ttl=3600: 100 100 5060 proxy.sipthor.net.
> 2017-01-05 14:35:59.060338 [blink 18271]: DNS lookup SRV _sips._tcp.sip2sip.info. failed: no DNS response received, the query has timed out
> 2017-01-05 14:36:24.174190 [blink 18271]: DNS lookup SRV _sip._tcp.sip2sip.info. succeeded, ttl=3600: 100 100 5060 proxy.sipthor.net.
> 2017-01-05 14:36:24.185869 [blink 18271]: DNS lookup SRV _sip._tcp.sip2sip.info. succeeded, ttl=3600: 100 100 5060 proxy.sipthor.net.
> 2017-01-05 14:36:24.266908 [blink 18271]: DNS lookup SRV _sips._tcp.sip2sip.info. succeeded, ttl=3063: 100 100 443 proxy.sipthor.net.
>
> The name server that is used is at 127.0.1.1. Blink has code to detect if a name server is usable or
>not and if not it will automatically fall back to using the Google name
>servers at 8.8.8.8 and 8.8.4.4. But if during the probing the name servers
> happen to work, then the fallback will not happen.
>
> The conclusion is that they have to either fix their DNS resolver, or replace their buggy resolver
> with the google name servers (8.8.8.8 and 8.8.4.4) in /etc/resolv.conf
>
Thanks. I'll pursue that.
Regards,
Lars
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