<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi<div class=""><br class=""></div><div class="">AFIAK you should always get that it ignores the CNAME. Why it sometimes behaves different I can’t tell. I run a test script here and I got it always, unless the lifetime of the resolver was reached. Then I got timeouts.</div><div class=""><br class=""></div><div class="">So it could be that you’re hitting a timeout or a lifecycle timeout of the resolver, but from remote I can’t really tell. For lookups dnspython is used.</div><div class=""><br class=""></div><div class="">To mitigate the issue, you could specify the port and proxy and it should just do an A lookup and not the NAPTR, SRV, A. </div><div class=""><br class=""></div><div class="">To do this, go to Server Settings in the SIP account and add an outbound proxy and port, where outbound proxy is <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> and the port 5060</div><div class=""><br class=""></div><div class="">Best regards,</div><div class=""><br class=""></div><div class="">Tijmen de Mes</div><div class="">—</div><div class="">AG Projects</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">Op 30 nov. 2022, om 18:17 heeft <a href="mailto:g4-lisz@tonarchiv.ch" class="">g4-lisz@tonarchiv.ch</a> het volgende geschreven:</div><br class="Apple-interchange-newline"><div class=""><div class="">It's really strange, right now it's working but I don't know what has changed.<br class=""><br class="">Again I did some network sniffing on port 53 and it seems a bit random how Blink is reacting to the DNS replies: Sometimes it simply ignores the CNAME answer to the NAPTR and doesn't send a request for <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a>. Sometimes it sends a NAPTR request for <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a>...<br class=""><br class="">IMHO the same randomness decides if everything works or fails: If it interprets the NAPTR replies as "contains no answer", then the SRV requests are also sent and interpreted correctly.<br class="">If the first request is mistakenly handled like a timeout, all the other requests are not sent and the whole process seems to block somewhere.<br class=""><br class="">Some timing issue in the DNS resolve threads?<br class=""><br class="">Cheers<br class="">Till<br class=""><br class="">On 30.11.22 15:42, <a href="mailto:g4-lisz@tonarchiv.ch" class="">g4-lisz@tonarchiv.ch</a> wrote:<br class=""><blockquote type="cite" class="">Hi<br class=""><br class="">thank you for your replies.<br class=""><br class="">I'm a bit more familiar with DNS than with VOIP... If I get it right the NAPTR is optional and SIP should work without it.<br class=""><br class="">CNAME can always be a reply to a DNS lookup, it just means: The name you are looking for is an alias, i.e. <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> is a virtual domain. IMHO Blink does the right thing and sends a second request for <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a>.<br class=""><br class="">But for <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a> there's a NAPTR either. The SOA reply only means that this an authoritative answer.<br class=""><br class="">IMHO the problem comes with the second DNS reply which contains only a SOA. Blink seams not to handle this and runs into a timeout.<br class=""><br class="">Strangely enough the whole issue doesn't always appear and all works fine sometimes. Then I get the same log lines like Timen de Mes:<br class=""><br class="">2022-11-30 15:35:49.340913 [blink 2]: DNS lookup NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: DNS response contains no answer<br class="">2022-11-30 15:35:49.405083 [blink 2]: DNS lookup SRV _sip._<a href="http://udp.guest1.voipgateway.org" class="">udp.guest1.voipgateway.org</a> failed: DNS record does not exist<br class="">2022-11-30 15:35:49.463001 [blink 2]: DNS lookup SRV _sip._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: DNS record does not exist<br class="">2022-11-30 15:35:59.932458 [blink 2]: DNS lookup SRV _sips._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: DNS record does not exist<br class="">2022-11-30 15:35:59.960770 [blink 2]: DNS lookup A <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> succeeded, ttl=3600: 212.117.203.57<br class=""><br class="">Best regards<br class="">Till<br class=""><br class="">On 30.11.22 12:10, Adrian Georgescu wrote:<br class=""><blockquote type="cite" class="">$dig cname <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a><br class=""><br class="">;; QUESTION SECTION:<br class="">;<a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a>. IN CNAME<br class=""><br class="">;; ANSWER SECTION:<br class=""><a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a>. 21600 IN CNAME <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a>.<br class=""><br class="">The CNAME should not be there for the domain name.<br class=""><br class="">—<br class="">Adrian<br class=""><br class=""><br class=""><br class=""><br class=""><blockquote type="cite" class="">On 30 Nov 2022, at 07:15, Tijmen de Mes <<a href="mailto:tijmen@ag-projects.com" class="">tijmen@ag-projects.com</a>> wrote:<br class=""><br class="">Hi,<br class=""><br class="">I looked at it a bit more and the fact that a CNAME is returned could happen.<br class=""><br class="">However in my Blink I can’t reproduce this fault, I used the domain <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> and I could register(?), if I made a call I got a prompt.<br class=""><br class="">This is how my logs look:<br class=""><br class=""> 1 2022-11-30 10:59:46.901093 [blink 4977]: DNS lookup NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: DNS response contains no answer<br class=""> 2 2022-11-30 10:59:46.901540 [blink 4977]: DNS lookup SRV _sips._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: DNS record does not exist<br class=""> 3 2022-11-30 10:59:46.901950 [blink 4977]: DNS lookup SRV _sip._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: DNS record does not exist<br class=""> 4 2022-11-30 10:59:46.902359 [blink 4977]: DNS lookup SRV _sip._<a href="http://udp.guest1.voipgateway.org" class="">udp.guest1.voipgateway.org</a> failed: DNS record does not exist<br class=""> 5 2022-11-30 10:59:46.902618 [blink 4977]: DNS lookup A <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> succeeded, ttl=2675: 212.117.203.57<br class=""><br class="">I don’t have the flatpack so I can’t tell you if something is wrong in there. The lookups are handled by python3-sipsimple.<br class=""><br class="">Best regards,<br class=""><br class="">Timen de Mes<br class="">—<br class="">AG Projects<br class=""><br class=""><blockquote type="cite" class="">Op 30 nov. 2022, om 10:35 heeft Tijmen de Mes <<a href="mailto:tijmen@ag-projects.com" class="">tijmen@ag-projects.com</a>> het volgende geschreven:<br class=""><br class="">Hi,<br class=""><br class="">The fact that you see the timeouts could be a bug.<br class=""><br class="">The problem is that a NAPTR does exist and is a CNAME? I’ve never seen this and I am not sure this is even valid in DNS.<br class=""><br class="">AFAIK a NAPTR in this case should return something like:<br class=""><br class="">20 100 "s" "SIP+D2U" "" _sip._<a href="http://udp.sip2sip.info" class="">udp.sip2sip.info</a>.<br class="">10 100 "s" "SIP+D2T" "" _sip._<a href="http://tcp.sip2sip.info" class="">tcp.sip2sip.info</a>.<br class="">25 100 "s" "SIPS+D2T" "" _sips._<a href="http://tcp.sip2sip.info" class="">tcp.sip2sip.info</a>.<br class=""><br class="">After this a SRV lookup would be done.<br class=""><br class="">Are you able to register your account?<br class=""><br class=""><br class="">Best regards,<br class=""><br class="">Tijmen de Mes<br class="">—<br class="">AG Projects<br class=""><br class=""><blockquote type="cite" class="">Op 29 nov. 2022, om 17:44 heeft <a href="mailto:g4-lisz@tonarchiv.ch" class="">g4-lisz@tonarchiv.ch</a> het volgende geschreven:<br class=""><br class="">Hi there<br class=""><br class="">A few days ago I updated my OS to Pop! OS / Ubuntu 22.04 LTS with the Blink flatpack V5.5.0<br class=""><br class="">A few times it worked flawlessly, but most of the time, starting a call lags a lot and it simply fails with a beep after a few minutes without any further message.<br class=""><br class="">The logs shows issues with DNS:<br class=""><br class="">2022-11-29 15:22:37.533993 [blink 2]: DNS lookup NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:22:37.534465 [blink 2]: DNS lookup SRV _sip._<a href="http://udp.guest1.voipgateway.org" class="">udp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:22:37.534699 [blink 2]: DNS lookup SRV _sip._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:22:37.534909 [blink 2]: DNS lookup SRV _sips._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:22:37.535100 [blink 2]: DNS lookup A <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:22:37.637499 [blink 2]: DNS lookup TXT <a href="http://xcap.guest1.voipgateway.org" class="">xcap.guest1.voipgateway.org</a> failed: DNS record does not exist<br class="">2022-11-29 15:23:08.049049 [blink 2]: DNS lookup NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:08.049976 [blink 2]: DNS lookup SRV _sips._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:08.050817 [blink 2]: DNS lookup SRV _sip._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:08.051510 [blink 2]: DNS lookup SRV _sip._<a href="http://udp.guest1.voipgateway.org" class="">udp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:08.052161 [blink 2]: DNS lookup A <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:38.498519 [blink 2]: DNS lookup NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:38.498998 [blink 2]: DNS lookup SRV _sip._<a href="http://udp.guest1.voipgateway.org" class="">udp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:38.499612 [blink 2]: DNS lookup SRV _sip._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:38.500547 [blink 2]: DNS lookup SRV _sips._<a href="http://tcp.guest1.voipgateway.org" class="">tcp.guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:23:38.501826 [blink 2]: DNS lookup A <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class="">2022-11-29 15:24:08.946267 [blink 2]: DNS lookup NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> failed: no DNS response received, the query has timed out<br class=""><br class="">and so on.<br class=""><br class="">But in reality there are no DNS timeouts. IMHO the issue is that Blink doesn't handle the DNS answers right and then somehow deadlocks on the first NATPR request.<br class=""><br class="">I did some sniffing on port 53 and there are no DNS requests for SRV:<br class=""><br class="">192.168.178.23 192.168.178.1 DNS 82 Standard query 0x1eab NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a><br class="">192.168.178.1 192.168.178.23 DNS 162 Standard query response 0x1eab NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> CNAME <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a> SOA <a href="http://ns1.backbone.ch" class="">ns1.backbone.ch</a><br class="">192.168.178.23 192.168.178.1 DNS 79 Standard query 0x3a0b NAPTR <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a><br class="">192.168.178.1 192.168.178.23 DNS 141 Standard query response 0x3a0b NAPTR <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a> SOA <a href="http://ns1.backbone.ch" class="">ns1.backbone.ch</a><br class="">[ ..nothing concerning VOIP...]<br class="">192.168.178.23 192.168.178.1 DNS 82 Standard query 0xb5c0 NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a><br class="">192.168.178.1 192.168.178.23 DNS 162 Standard query response 0xb5c0 NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> CNAME <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a> SOA <a href="http://ns1.backbone.ch" class="">ns1.backbone.ch</a><br class="">192.168.178.23 192.168.178.1 DNS 79 Standard query 0x5cba NAPTR <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a><br class="">192.168.178.1 192.168.178.23 DNS 141 Standard query response 0x5cba NAPTR <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a> SOA <a href="http://ns1.backbone.ch" class="">ns1.backbone.ch</a><br class="">[ ..nothing concerning VOIP...]<br class="">192.168.178.23 192.168.178.1 DNS 82 Standard query 0x63b5 NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a><br class="">192.168.178.1 192.168.178.23 DNS 162 Standard query response 0x63b5 NAPTR <a href="http://guest1.voipgateway.org" class="">guest1.voipgateway.org</a> CNAME <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a> SOA <a href="http://ns1.backbone.ch" class="">ns1.backbone.ch</a><br class="">192.168.178.23 192.168.178.1 DNS 79 Standard query 0x6dce NAPTR <a href="http://ws1.voipgateway.org" class="">ws1.voipgateway.org</a><br class=""><br class="">The queries timeout occurs because Blink does not issue the requests. IMHO Blink does not handle the SOA replies and somehow deadlocks, so other requests are never sent.<br class=""><br class="">Instead it should simply return: NAPTR record does not exist. Go on...<br class=""><br class="">Cheers<br class="">Till<br class=""><br class="">_______________________________________________<br class="">Blink mailing list<br class=""><a href="mailto:Blink@lists.ag-projects.com" class="">Blink@lists.ag-projects.com</a><br class="">https://lists.ag-projects.com/mailman/listinfo/blink<br class=""></blockquote>_______________________________________________<br class="">Blink mailing list<br class=""><a href="mailto:Blink@lists.ag-projects.com" class="">Blink@lists.ag-projects.com</a><br class="">https://lists.ag-projects.com/mailman/listinfo/blink<br class=""></blockquote>_______________________________________________<br class="">Blink mailing list<br class=""><a href="mailto:Blink@lists.ag-projects.com" class="">Blink@lists.ag-projects.com</a><br class="">https://lists.ag-projects.com/mailman/listinfo/blink<br class=""></blockquote><br class="">_______________________________________________<br class="">Blink mailing list<br class=""><a href="mailto:Blink@lists.ag-projects.com" class="">Blink@lists.ag-projects.com</a><br class="">https://lists.ag-projects.com/mailman/listinfo/blink<br class=""></blockquote>_______________________________________________<br class="">Blink mailing list<br class=""><a href="mailto:Blink@lists.ag-projects.com" class="">Blink@lists.ag-projects.com</a><br class="">https://lists.ag-projects.com/mailman/listinfo/blink<br class=""></blockquote>_______________________________________________<br class="">Blink mailing list<br class=""><a href="mailto:Blink@lists.ag-projects.com" class="">Blink@lists.ag-projects.com</a><br class="">https://lists.ag-projects.com/mailman/listinfo/blink<br class=""></div></div></blockquote></div><br class=""></div></body></html>