[OpenSIPS-Users] OpenSIPS fails on urn:service:sos RURI

[Anders Kristensen]

I'm trying to route calls to emergency services through an OpenSIPS
proxy. It seems that the tm module fails because it (or OpenSIPS
itself) is unable to parse urn:service:sos RURI (defined in RFC 5031).

Mar 18 17:27:31 [8807] ERROR:core:parse_uri: bad uri,  state 0 parsed:
<urn:> (4) / <urn:service:sos> (15)
Mar 18 17:27:31 [8807] ERROR:core:parse_sip_msg_uri: bad uri <urn:service:sos>
Mar 18 17:27:31 [8807] DBG:core:set_err_info: ec: 1, el: 3, ei: 'error
parsing r-uri'
Mar 18 17:27:31 [8807] ERROR:tm:new_t: uri invalid
Mar 18 17:27:31 [8807] ERROR:tm:t_newtran: new_t failed

I'm routing the call using t_relay("udp:127.0.0.1:5070") so there
should be no real need to parse the RURI. (What I'd really like to do
instead is have the client insert a preloaded route in the INVITE and
have OpenSIPS route based on that and leave the RURI untouched.)

A quick search shows that this exact issue came up back in 2008:
http://lists.sip-router.org/pipermail/users/2008-March/016680.html
Also, RFC 5031 was published in 2008 so I'm surprised if this is still
an issue. Can you experts think of *any* way to get OpenSIPS to send
an INVITE with RURI urn:service:sos? Preferably one that doesn't
involve writing a new module just for this purpose.

I tried this with the latest OpenSIPS 1.10.

Thanks,
Anders