[SR-Users] Websockets, set_contact_alias(), & IPv6

Daniel-Constantin Mierla miconda at gmail.com
Tue Apr 7 09:42:00 CEST 2015

On 07/04/15 05:32, Anthony Messina wrote:
> On Sunday, March 29, 2015 08:57:44 PM Anthony Messina wrote:
>> On Sunday, March 29, 2015 05:23:26 PM Anthony Messina wrote:
>>> I've been working on Kamailio websocket integration and I believe I'm
>>> having issues with the IPv6 address representation in the Contact
>>> header's alias parameter.  After Googling, it appears after
>>> https://github.com/kamailio/kamailio/commit/814c08f3 the IPv6 contact is
>>> represented in brackets [].  However, it when using websockets, and the
>>> alias= parameter uses brackets [] around and IPv6 address, there are
>>> message parsing issues.
>>> With a header such as the following
>>> Contact:
>>> <sip:wstest1 at example.com;gr=urn:uuid:26140e27-0ab7-4e65-98e3-3d0909b1434e;
>>> al ias=[2001:db8:0:1]~48768~6>
>>> Asterisk 13.2.0 will give the following error:
>>> pjsip:0 <?>:     sip_transport. Error processing 1855 bytes packet from
>>> UDP
>>> : PJSIP syntax error exception when parsing 'Request Line'
>>> header on line 12 col 129:
>>> And when sipjs, or jssip are used with either Firefox or Chrome, they send
>>> garbage in the ACK request URI:
>>> Kamailio logs something like the following and the ACK cannot be
>>> processed:
>>> WARNING: sanity [sanity.c:236]: check_ruri_scheme(): failed to parse
>>> request uri [�a�{1me▒s�na at 50�9���1.�8:�2v0;i��a��=11>7�n7x>10O�2v0~1]
>>> Is it proper to have [] brackets around the IPv6 alias address in the
>>> Contact header?  Does the value need to be quoted?
>>> If I force the browser to use IPv4, without changing anything else, both
>>> jssip and sipjs work perfectly in Firefox and Chrome.
>> It seems that the topoh module doesn't cope with this well.  Disabling the
>> topoh module seems to resolve the issue, unfortunately.
> I've added some additional information and an example INVITE here:
> https://github.com/kamailio/kamailio/issues/120
Wrote in the issue page as well:

Parameter values for SIP URI must not be enclosed in quotes (as per sip

However, given that the IP open appear as value of a uri parameter, I
would expect '[' and ']' to allowed as chars in uri parameters. The SIP
grammar has to be checked.


Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, May 27-29, 2015
Berlin, Germany - http://www.kamailioworld.com

More information about the sr-users mailing list