[SR-Users] kamailio db

Alex Balashov abalashov at evaristesys.com
Wed Mar 26 08:34:38 CET 2014 

Yeah, but you're checking inside the if(!lookup(...)) block.

! is, in Kamailio, as in most programming language languages, a negation operator. It means "if the lookup failed" in this case, i.e. if lookup() returned a zero or negative value. And if you're seeing the xlog messages where you have placed them, it means the lookups are failing. 

It also means the RURI is not being altered by a successful lookup, which means it still has the RURI domain of the proxy (print $ru, not $rU, to see what I mean), which explains the request looping. 


On 26 March 2014 03:30:22 GMT-04:00, Slava Bendersky <volga629 at networklab.ca> wrote:
>Hello Alex, 
>
>The log showing $ru value $du, empty. 
>
>
>$avp(oexten) = $rU; 
>if (!lookup("location")) { 
>xlog("L_INFO", "This $rU and this $du"); 
>
>Mar 26 03:12:16 dsm01 /usr/sbin/kamailio[9706]: INFO: <script>: This
>124 and this <null> 
>Mar 26 03:12:57 dsm01 /usr/sbin/kamailio[9709]: INFO: <script>: This
>120 and this <null> 
>
>When I specify proxy settings on sip client "zoiper", rtp start working
>and at least I can dial voicemail on asterisk behind. 
>
>Slava. 
>
>----- Original Message -----
>
>From: "Alex Balashov" <abalashov at evaristesys.com> 
>To: "Kamailio (SER) - Users Mailing List"
><sr-users at lists.sip-router.org> 
>Sent: Tuesday, March 25, 2014 10:44:33 PM 
>Subject: Re: [SR-Users] kamailio db 
>
>That sounds like the registration lookup is resolving to a binding
>which has as its domain the domain of the proxy itself. 
>
>Try printing the value of $ru and $du (via xlog) immediately after the
>lookup(). It will probably shed some light. 
>
>
>On 25 March 2014 22:14:58 GMT-04:00, Slava Bendersky
><volga629 at networklab.ca> wrote: 
>
>
>Hello Alex. 
>After some looking around, I added in request route, 
>
>Added 
>
># Saving domain + attr in DB 
>save("location"); 
>
># user location service 
>route(LOCATION); 
>} 
>
>but the problem that call looping. If I dial any extension call back to
>dialed extension. I see on tcpdump like. 
>
>21:12:39.461230 IP (tos 0x10, ttl 64, id 46056, offset 0, flags [none],
>proto UDP (17), length 1002) 
>192.168.100.145.5060 > 192.168.100.1.61736: [udp sum ok] SIP, length:
>974 
>INVITE sip:1200 at 192.168.100.1:61736;transport=UDP SIP/2.0 
>Record-Route: <sip:192.168.100.145;lr=on> 
>Via: SIP/2.0/UDP
>192.168.100.145;branch=z9hG4bK2c97.11f246b692210236849f9ef31836226b.1 
>Via: SIP/2.0/UDP
>192.168.100.1:57876;branch=z9hG4bK-d8754z-8160e51d28da9ef7-1---d8754z- 
>Max-Forwards: 16 
>Contact: <sip:1200 at 192.168.100.1:57876;transport=UDP> 
>To: <sip:120 at networklab.loc;transport=UDP> 
>From: "Slava
>Bendersky"<sip:1200 at networklab.loc;transport=UDP>;tag=da605d51 
>Call-ID: NGFmMzg1NzFjYTQ1Y2FlZmI2ODE2OWEzNTRkNGMzOTI. 
>CSeq: 1 INVITE 
>Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO,
>SUBSCRIBE 
>Content-Type: application/sdp 
>Supported: replaces, norefersub, extended-refer, timer,
>X-cisco-serviceuri 
>User-Agent: Z 3.2.21368 r21103 
>Allow-Events: presence, kpml 
>Content-Length: 155 
>
>v=0 
>o=Z 0 0 IN IP4 127.0.0.1 --> ? 
>s=Z 
>c=IN IP4 127.0.0.1 
>t=0 0 
>m=audio 8000 RTP/AVP 0 101 
>a=rtpmap:101 telephone-event/8000 
>a=fmtp:101 0-15 
>a=sendrecv 
>
>
>
>----- Original Message -----
>
>From: "Slava Bendersky" <volga629 at networklab.ca> 
>To: "Kamailio (SER) - Users Mailing List"
><sr-users at lists.sip-router.org> 
>Sent: Tuesday, March 25, 2014 11:43:57 AM 
>Subject: Re: [SR-Users] kamailio db 
>
>Hello Alex, 
>
>I was looking on location as far I understand this part need to be
>checked on ldap level. 
>
>$avp(oexten) = $rU; 
>if (!lookup("location")) { 
>$var(rc) = $rc; 
>
>I have defined in ldap as separate item sipDomain I can do ldap_search
>on it, but not sure about lookup, avp I can set to $avp(domain). 
>
>Slava. 
>
>----- Original Message -----
>
>From: "Slava Bendersky" <volga629 at networklab.ca> 
>To: "Kamailio (SER) - Users Mailing List"
><sr-users at lists.sip-router.org> 
>Sent: Monday, March 24, 2014 1:39:42 PM 
>Subject: Re: [SR-Users] kamailio db 
>
>Hello Alex, 
>
>Here output from dig. 
>
>Yes, for current setup I want setup as border gateway with couple
>redirection and failover to DR site. Currently I got ldap
>authentication working. trying test call between remote extension
>(which failing). And next step will forward to voicemail which
>partially done. PSTN forward is part of config I will need adjust
>couple expression to match dial string. That current plan. 
>
>[volga629 at localhost ~]$ dig srv _sips._tcp.networklab.loc 
>
>; <<>> DiG 9.9.4-P2-RedHat-9.9.4-11.P2.fc20 <<>> srv
>_sips._tcp.networklab.loc 
>;; global options: +cmd 
>;; Got answer: 
>;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64602 
>;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 4
>
>
>;; OPT PSEUDOSECTION: 
>; EDNS: version: 0, flags:; udp: 4096 
>;; QUESTION SECTION: 
>;_sips._tcp.networklab.loc. IN SRV 
>
>;; ANSWER SECTION: 
>_sips._tcp.networklab.loc. 3600 IN SRV 0 0 5061 dsm01.networklab.loc. 
>
>;; AUTHORITY SECTION: 
>networklab.loc. 86400 IN NS ns1.networklab.loc. 
>networklab.loc. 86400 IN NS ns2.networklab.loc. 
>
>;; ADDITIONAL SECTION: 
>dsm01.networklab.loc. 86400 IN A 192.168.100.145 
>ns1.networklab.loc. 86400 IN A 192.168.10.69 
>ns2.networklab.loc. 86400 IN A 192.168.10.99 
>
>;; Query time: 2 msec 
>;; SERVER: 192.168.10.99#53(192.168.10.99) 
>;; WHEN: Mon Mar 24 13:31:27 EDT 2014 
>;; MSG SIZE rcvd: 178 
>
>
>[volga629 at localhost ~]$ dig srv _sip._udp.networklab.loc 
>
>; <<>> DiG 9.9.4-P2-RedHat-9.9.4-11.P2.fc20 <<>> srv
>_sip._udp.networklab.loc 
>;; global options: +cmd 
>;; Got answer: 
>;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15496 
>;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 4
>
>
>;; OPT PSEUDOSECTION: 
>; EDNS: version: 0, flags:; udp: 4096 
>;; QUESTION SECTION: 
>;_sip._udp.networklab.loc. IN SRV 
>
>;; ANSWER SECTION: 
>_sip._udp.networklab.loc. 3600 IN SRV 0 0 5060 dsm01.networklab.loc. 
>
>;; AUTHORITY SECTION: 
>networklab.loc. 86400 IN NS ns2.networklab.loc. 
>networklab.loc. 86400 IN NS ns1.networklab.loc. 
>
>;; ADDITIONAL SECTION: 
>dsm01.networklab.loc. 86400 IN A 192.168.100.145 
>ns1.networklab.loc. 86400 IN A 192.168.10.69 
>ns2.networklab.loc. 86400 IN A 192.168.10.99 
>
>;; Query time: 2 msec 
>;; SERVER: 192.168.10.99#53(192.168.10.99) 
>;; WHEN: Mon Mar 24 13:32:30 EDT 2014 
>;; MSG SIZE rcvd: 177 
>
>
>
>
>----- Original Message -----
>
>From: "Alex Balashov" <abalashov at evaristesys.com> 
>To: sr-users at lists.sip-router.org 
>Sent: Monday, March 24, 2014 12:43:58 AM 
>Subject: Re: [SR-Users] kamailio db 
>
>On 03/24/2014 12:33 AM, Slava Bendersky wrote: 
>
>> 9(6003) DEBUG: <core> [dns_cache.c:830]: dns_cache_add(): 
>> dns_cache_add: adding networklab.loc(14) 1 (flags=1) at 720 
>> 9(6003) ERROR: <core> [resolve.c:1733]: sip_hostport2su(): ERROR: 
>> sip_hostport2su: could not resolve hostname: "networklab.loc" 
>
>How are you checking the SRV records, exactly? Can you paste the 
>invocation and output of the 'host' command, or whatever you're using? 
>
>-- 
>Alex Balashov - Principal 
>Evariste Systems LLC 
>235 E Ponce de Leon Ave 
>Suite 106 
>Decatur, GA 30030 
>United States 
>Tel: +1-678-954-0670 
>Web: http://www.evaristesys.com/, http://www.alexbalashov.com/ 
>
>_______________________________________________ 
>SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>
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>
>
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>
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>http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users 
>
>
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>
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>http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users 
>
>
>
>
>
>
>SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>
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>
>
>
>
>-- 
>Sent from my mobile, and thus lacking in the refinement one might
>expect from a fully fledged keyboard. 
>
>Alex Balashov - Principal 
>Evariste Systems LLC 
>235 E Ponce de Leon Ave 
>Suite 106 
>Decatur, GA 30030 
>United States 
>Tel: +1-678-954-0671 
>Web: http://www.evaristesys.com /, http://www.alexbalashov.com 
>_______________________________________________ 
>SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>
>sr-users at lists.sip-router.org 
>http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users 
>
>
>
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>SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
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--
Sent from my Nexus 10, with all the figments of autocorrect that might imply.

Alex Balashov - Principal
Evariste Systems LLC
235 E Ponce de Leon Ave
Suite 106
Decatur, GA 30030
United States
Tel: +1-678-954-0670
Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
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