22 Apr
2008
22 Apr
'08
4:54 p.m.
El Tuesday 22 April 2008 12:43:11 Aadilkhan Maniyar escribió:
Hi,
When Openser receives a malformed INVITE with SIP version set to 10.0 in
the Request Line, it just processes it as a normal INVITE.
The Request Line of the INVITE message received looks like this:
INVITE sip:ua1@domain.com SIP/10.0
According to RFC 3261, the Requests should contain SIP/2.0. Hence
Openser should drop this request with an appropriate 4xx reponse.
But this behavior is not seen.
IMHO, since for now there just exists SIP/2.0 it makes no sense to increase
parsing time by matching the message SIP version
I'm sure that there are LOTS of aspects in the
super-complex-and-mega-permissive ABNF grammar of SIP that is not checked in
OpenSer when parsing a message. For example, RFC 3261 says that a userinfo
can't contain '#' but you can send to OpenSer:
INVITE sip:#1232323@domain SIP/2.0
and OpenSer will not reject the request with the appropiate 4XX response.
Do I have to modify my openser.cfg for validating the
above INVITE?
I don't know if there is a pseudovariable containing the SIP version of
received message, but in case there is then you'll need to check it manually
in the script.
Regards.
--
Iñaki Baz Castillo
ibc(a)in.ilimit.es