[Users] NEW FEATURE: DNS-based failover

[Bogdan-Andrei Iancu]

Hi Alex,

did you receive any provisional reply from UAS before the timeout event?

regards,
bogdan

Alex Hermann wrote:
> On Thursday 25 January 2007 15:10, Bogdan-Andrei Iancu wrote:
>   
>> Any feedback is appreciated.
>>     
>
> For me, it doesn't work at all. I get the same behaviour of OpenSER 1.2.x as 
> with 1.1.x. I can see that SER does a SRV query to the DNS which should 
> return 2 entries with different priorities. SER then only tries the lower 
> priority one. If that fails, the script ends.
>
>
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG: mk_proxy: doing DNS lookup...
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG:sip_resolvehost2: no port, has 
> proto -> do SRV lookup!
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG:do_srv_lookup: 
> SRV(_sip._udp.outbounds.domain.net) = out_sip1.domain.net:5060
> Apr 13 14:54:32 sip1 outbound1[17834]: check_via_address(123.123.123.123, 
> 123.123.123.123, 0)
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG:tm:set_timer: relative timeout is 
> 500000
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG: add_to_tail_of_timer[4]: 
> 0xb3a4bc6c (1760600000)
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG:tm:set_timer: relative timeout is 
> 2
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG: add_to_tail_of_timer[0]: 
> 0xb3a4bc88 (1762)
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG:tm:t_relay_to: new transaction 
> fwd'ed
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG:tm:UNREF_UNSAFE: after is 0
> Apr 13 14:54:32 sip1 outbound1[17834]: DEBUG:destroy_avp_list: destroying list 
> (nil)
> Apr 13 14:54:32 sip1 outbound1[17834]: receive_msg: cleaning up
> Apr 13 14:54:33 sip1 outbound1[17836]: DEBUG: timer routine:4,tl=0xb3a4bc6c 
> next=(nil), timeout=1760600000
> Apr 13 14:54:33 sip1 outbound1[17836]: DEBUG: retransmission_handler : request 
> resending (t=0xb3a4bb20, INVITE si ... )
> Apr 13 14:54:33 sip1 outbound1[17836]: DEBUG:tm:set_timer: relative timeout is 
> 1000000
> Apr 13 14:54:33 sip1 outbound1[17836]: DEBUG: add_to_tail_of_timer[5]: 
> 0xb3a4bc6c (1761600000)
> Apr 13 14:54:33 sip1 outbound1[17836]: DEBUG: retransmission_handler : done
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG: timer routine:5,tl=0xb3a4bc6c 
> next=(nil), timeout=1761600000
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG: retransmission_handler : request 
> resending (t=0xb3a4bb20, INVITE si ... )
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG:tm:set_timer: relative timeout is 
> 2000000
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG: add_to_tail_of_timer[6]: 
> 0xb3a4bc6c (1763600000)
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG: retransmission_handler : done
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG: timer routine:0,tl=0xb3a4bc88 
> next=(nil), timeout=1762
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG: final_response_handler:stop 
> retr. and send CANCEL (0xb3a4bb20)
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG:tm:t_should_relay_response: 
> T_code=100, new_code=408
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG:tm:t_pick_branch: picked branch 
> 0, code 408
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG:tm:relay_reply: branch=0, save=0, 
> relay=0
> Apr 13 14:54:34 sip1 outbound1[17836]: parse_headers: flags=ffffffffffffffff
> Apr 13 14:54:34 sip1 outbound1[17836]: check_via_address(217.114.103.90, 
> 217.114.103.90, 0)
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG:tm:set_timer: relative timeout is 
> 500000
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG: add_to_tail_of_timer[4]: 
> 0xb3a4bbe8 (1762500000)
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG:tm:set_timer: relative timeout is 
> 2
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG: add_to_tail_of_timer[0]: 
> 0xb3a4bc04 (1764)
> Apr 13 14:54:34 sip1 outbound1[17836]: DEBUG:tm:relay_reply: sent 
> buf=0x81651e8: SIP/2.0 4..., shmem=0xb3a4da08: SIP/2.0 4
> Apr 13 14:54:34 sip1 outbound1[17836]: DBG: trans=0xb3a4bb20, callback type 
> 128, id 0 entered
>
>
>
>
> # dig _sip._udp.outbounds.domain.net SRV
>
> ; <<>> DiG 9.3.4 <<>> _sip._udp.outbounds.domain.net SRV
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36981
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0
>
> ;; QUESTION SECTION:
> ;_sip._udp.outbounds.domain.net.        IN SRV
>
> ;; ANSWER SECTION:
> _sip._udp.outbounds.domain.net. 3600 IN SRV 101 100 5060 out_sip2.domain.net.
> _sip._udp.outbounds.domain.net. 3600 IN SRV 100 100 5060 out_sip1.domain.net.
>
> ;; Query time: 63 msec
>
>