[OpenSIPS-Users] OpenSIPS resolving DNS SRV records

Eric Tamme eric at uphreak.com
Fri May 22 21:34:02 CEST 2015

OpenSIPS follows RFC3263, see sip_resolvehost() in resolve.c for more 
details.  If you send a a request that is not a sips uri, to a plain 
domain with no transport parameter or port, opensips will do a udp SRV 
lookup on the domain.

Can you provide the actual domain please? If you cant - do a srv lookup 
on it to verify it actually has an SRV.

dig _sip._udp.blabla.webex.com SRV

On 05/22/2015 01:27 PM, Duane Larson wrote:
> OpenSIPS does not appear to be resolving the SIP address of a domain 
> that is provided by WebEx.com.  When I dial dlarson at BlahBLah.webex.com 
> <mailto:dlarson at BlahBLah.webex.com> the call gets forwarded to the IP 
> address of the webserver but it really should be going to the IP 
> address from an SRV record. I believe the OpenSIPS default is to 
> resolve DNS and also SRV records correct?  I wasn't sure if the issue 
> might be because the domain is BlahBlah.webex.com 
> <http://BlahBlah.webex.com> but I don't have any compare since all the 
> test domains I call (200901 at login.zipdx.com 
> <mailto:200901 at login.zipdx.com>, telephreak at voip.telephreak.org 
> <mailto:telephreak at voip.telephreak.org>) have the same IP for the web 
> as it does for the sip.
> debug=3
> log_stderror=no
> log_facility=LOG_LOCAL0
> fork=yes
> children=4
> /* uncomment the following lines to enable debugging */
> #debug=6
> #fork=no
> #log_stderror=yes
> /* uncomment the next line to enable the auto temporary blacklisting of
>    not available destinations (default disabled) */
> #disable_dns_blacklist=no
> /* uncomment the next line to enable IPv6 lookup after IPv4 dns
>    lookup failures (default disabled) */
> #dns_try_ipv6=yes
> /* comment the next line to enable the auto discovery of local aliases
>    based on revers DNS on IPs */
> auto_aliases=no
> listen=udp:eth0:5060   # CUSTOMIZE ME
> disable_tcp=yes
> #disable_tls=yes
> _______________________________________________
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> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users

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