On 08/04/15 02:32, Anthony Messina wrote:
> On Tuesday, April 07, 2015 09:42:00 AM Daniel-Constantin Mierla wrote:
>> 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:wste...@example.com;gr=urn:uuid:26140e27-0ab7-4e65-98e3-3d0909b1434
>>>>> e;
>>>>> 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
>>>>> 10.77.79.3:5060 : 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@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
>> rfc).
>>
>> 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.
>>
>> Cheers,
>> Daniel
> I don't doubt that you're right, Daniel. I have asked for some assistance on
> the PJSIP mailing list, as I get the same error from both Asterisk 13 and
> CSipSimple nightly build. Since Asterisk has moved to PJSIP, this could pose
> a significant interoperability issue.
>
> http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/2015-April/018313.html
Looked quickly at grammar (rfc3261, section25):
uri-parameters = *( ";" uri-parameter)
uri-parameter = transport-param / user-param / method-param
/ ttl-param / maddr-param / lr-param / other-param
other-param = pname [ "=" pvalue ]
pname = 1*paramchar
pvalue = 1*paramchar
paramchar = param-unreserved / unreserved / escaped
param-unreserved = "[" / "]" / "/" / ":" / "&" / "+" / "$"
Therefore '[' and ']' are allowed in uri parameter, being part of
'param-unreserved' group of chars.
Cheers,
Daniel
--
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
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