[asterisk-bugs] [JIRA] Commented: (ASTERISK-17582) DNS SRV - does not work

[Matt Jordan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-17582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=195265#comment-195265 ] 

Matt Jordan commented on ASTERISK-17582:
----------------------------------------

Regardless of the DEBUG messages, Asterisk only supports the first SRV record returned.  That's the only record it will use.  Any additional records returned by a DNS query are not utilized.

Any change to that behavior would be a new feature that would fall under the feature request guidelines.

> DNS SRV - does not work
> -----------------------
>
>                 Key: ASTERISK-17582
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-17582
>             Project: Asterisk
>          Issue Type: Bug
>          Components: Channels/chan_sip/Interoperability
>            Reporter: Maciej Krajewski
>            Severity: Minor
>         Attachments: config
>
>
> SRV's does not work properly.
> I've disabled one of IP addresses of DNS SRV enabled peer on my router to test the functionality. Unfortunately, the Asterisk does not automatically switch to peer other IP address as IP phones does.
> Beneath is the trace of connection:
>  21.314976    10.0.4.12 -> 213.218.116.65 SIP Request: REGISTER sip:sip.freeconet.pl
>  21.315459     10.0.4.1 -> 10.0.4.12    ICMP Destination unreachable (Port unreachable)
>  21.611684    10.0.4.12 -> 213.218.116.65 SIP/SDP Request: INVITE sip:+48587396000 at sip.freeconet.pl:5060, with session description
>  21.612330     10.0.4.1 -> 10.0.4.12    ICMP Destination unreachable (Port unreachable)
>  23.610971    10.0.4.12 -> 213.218.116.65 SIP/SDP Request: INVITE sip:+48587396000 at sip.freeconet.pl:5060, with session description
>  23.611627     10.0.4.1 -> 10.0.4.12    ICMP Destination unreachable (Port unreachable)
>  25.319183    10.0.4.12 -> 213.218.116.65 SIP Request: REGISTER sip:sip.freeconet.pl
>  25.319663     10.0.4.1 -> 10.0.4.12    ICMP Destination unreachable (Port unreachable)
>  27.610967    10.0.4.12 -> 213.218.116.65 SIP/SDP Request: INVITE sip:+48587396000 at sip.freeconet.pl:5060, with session description
>  27.611508     10.0.4.1 -> 10.0.4.12    ICMP Destination unreachable (Port unreachable)
>  and so on...
> I've attached the sip.conf configuration and my peer configuration.
> ****** ADDITIONAL INFORMATION ******
>   == Using SIP RTP TOS bits 136
>   == Using SIP RTP CoS mark 4
>   == Using SIP VRTP TOS bits 136
>   == Using SIP VRTP CoS mark 4
>   == Using UDPTL TOS bits 136
>   == Using UDPTL CoS mark 4
>     -- Executing [587396000 at CALLEX:1] GotoIf("SIP/test001-00000002", "0?3") in new stack
>     -- Executing [587396000 at CALLEX:2] Set("SIP/test001-00000002", "__ORGDEST=587396000") in new stack
>     -- Executing [587396000 at CALLEX:3] AGI("SIP/test001-00000002", "agi://127.0.0.1/script.agi") in new stack
>     -- AGI Script Executing Application: (Set) Options: (CHANNEL(language)=pl)
>     -- AGI Script Executing Application: (Set) Options: (CALLERID(all)="test001"<Anonymous>)
>     -- AGI Script Executing Application: (Set) Options: (GROUP(in)=user2)
>     -- AGI Script Executing Application: (Set) Options: (GROUP(out)=sip1)
>     -- AGI Script Executing Application: (Set) Options: (CDR(is_inbound)=false)
>     -- AGI Script Executing Application: (Set) Options: (CDR(is_outbound)=true)
>     -- AGI Script Executing Application: (Set) Options: (CDR(number_a)=Anonymous)
>     -- AGI Script Executing Application: (Set) Options: (CDR(number_b)=+48587396000)
>     -- AGI Script Executing Application: (Set) Options: (CDR(src_interface)=CALLEX/test001)
>     -- AGI Script Executing Application: (Set) Options: (CDR(dst_interface)=SIP/test)
>     -- AGI Script Executing Application: (Set) Options: (CDR(src_account)=test001)
>     -- AGI Script Executing Application: (Set) Options: (CDR(sip_proxy_host)=sip.freeconet.pl)
>     -- AGI Script Executing Application: (Set) Options: (CDR(accountcode)=test001)
>     -- AGI Script Executing Application: (Set) Options: (CDR(acd)=test001)
>     -- AGI Script Executing Application: (Set) Options: (CDR(userfield)=UID:1300700168.2;CRG:1;ACD:test001;)
>     -- AGI Script Executing Application: (Set) Options: (_CALLUNIQUEID=1300700168.2)
>     -- AGI Script Executing Application: (Set) Options: (_NUMBER_A=11)
>     -- AGI Script Executing Application: (Set) Options: (_NUMBER_B=48587396000)
>     -- AGI Script Executing Application: (Dial) Options: (SIP/+48587396000 at test,45,wW)
>   == Using SIP RTP TOS bits 136
>   == Using SIP RTP CoS mark 4
>   == Using SIP VRTP TOS bits 136
>   == Using SIP VRTP CoS mark 4
>   == Using UDPTL TOS bits 136
>   == Using UDPTL CoS mark 4
>     -- Called +48587396000 at test
>        > ast_get_srv: SRV lookup for '_sip._udp.sip.freeconet.pl' mapped to host server2.freeconet.pl, port 5060
> [2011-03-21 10:36:10] NOTICE[19811]: dnsmgr.c:175 dnsmgr_refresh: dnssrv: host 'sip.freeconet.pl' changed from 213.218.116.65:5060 to 213.218.116.66:5060
> [2011-03-21 10:36:10] NOTICE[19811]: chan_sip.c:11680 sip_reg_timeout:    -- Registration for 'jamicque at sip.freeconet.pl' timed out, trying again (Attempt #2)

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