At least some DNS servers will provide some of the additional record info in the additional section of the dns response. I have seen dns servers that send additional records, but not the top priority ones, which does mean that the client would need to do additional lookups. For instance in the sample case following, the 3 last SRV records include the A record lookups, but my sip clients do requests for the first ones: quentusrex@quentusrex-thinkpad:~$ dig _sip._udp.callcentric.com SRV ; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> _sip._udp.callcentric.com SRV ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28623 ;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 3, ADDITIONAL: 3 ;; QUESTION SECTION: ;_sip._udp.callcentric.com. IN SRV ;; ANSWER SECTION: _sip._udp.callcentric.com. 600 IN SRV 20 0 5080 alpha15.callcentric.com. _sip._udp.callcentric.com. 600 IN SRV 20 0 5080 alpha16.callcentric.com. _sip._udp.callcentric.com. 600 IN SRV 20 0 5080 alpha17.callcentric.com. _sip._udp.callcentric.com. 600 IN SRV 20 0 5080 alpha18.callcentric.com. _sip._udp.callcentric.com. 600 IN SRV 20 0 5080 alpha19.callcentric.com. _sip._udp.callcentric.com. 600 IN SRV 20 0 5080 alpha11.callcentric.com. _sip._udp.callcentric.com. 600 IN SRV 20 0 5080 alpha12.callcentric.com. _sip._udp.callcentric.com. 600 IN SRV 20 0 5080 alpha13.callcentric.com. ;; AUTHORITY SECTION: callcentric.com. 1200 IN NS ns1.telengy.net. callcentric.com. 1200 IN NS ns3.telengy.net. callcentric.com. 1200 IN NS ns4.telengy.net. ;; ADDITIONAL SECTION: alpha11.callcentric.com. 1200 IN A 204.11.192.159 alpha12.callcentric.com. 1200 IN A 204.11.192.160 alpha13.callcentric.com. 1200 IN A 204.11.192.161 ;; Query time: 277 msec ;; SERVER: 192.168.100.4#53(192.168.100.4) ;; WHEN: Tue Oct 29 12:45:07 2013 ;; MSG SIZE rcvd: 500 William King Senior Engineer Quentus Technologies, INC 1037 NE 65th St Suite 273 Seattle, WA 98115 Main: (877) 211-9337 Office: (206) 388-4772 Cell: (253) 686-5518 william.king@quentustech.com On 10/24/2013 12:46 PM, Karl Schmidt wrote:
On 10/24/2013 01:49 PM, Raymond Chandler wrote:
Yes, FreeSWITCH supports SRV records, and handles them correctly. When I use sofia_dig, I see the IP and the port that are returned from DNS lookups via dig. If you're not, then you or your provider must have something misconfigured.
This is correct - I was able to see the details by setting sofia loglevel all 9
( I must say that the SRV record syntax is poorly designed - and shouldn't have required multiple lookups - needlessly complex. )
On 10/24/2013 01:13 PM, Karl Schmidt wrote:
I'm trying to figure out a way to see if a freeswitch gateway respects SRV records.
I've been trying different sofia commands without finding the IP that it is using.
sofia_dig returns just the A records.
To be clear - let's say you are using example.com as your DID and have a gateway set up.
The provider should have SRV records so that there can be graceful failures.
To see the IPs to use - do
dig SRV _sip._upd.example.com
So my precise question is how to see the IP freeswitch is using for a gateway. (I'm assuming that freeswitch knows how to use SRV records?)
-------------------------------------------------------------------------------- Karl Schmidt EMail Karl@xtronics.com Transtronics, Inc. WEB http://secure.transtronics.com 3209 West 9th Street Ph (785) 841-3089 Lawrence, KS 66049 FAX (785) 841-0434
Taking subsidy money from the government is immoral. Realize that you are taking the money of people that work at McDonald’s by threat of force. kps
--------------------------------------------------------------------------------
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org