[Serusers] avpops - how to fake a registration

[Java Rockx]

Yep. That's what I'm doing. 

Thanks.

On Apr 4, 2005 1:58 AM, Greger V. Teigre <greger at teigre.com> wrote:
> :-D Ok, I see. I got another one: Copy the save() code to your own module
> and remove the DB code. ;-)
> g-)
> 
> Java Rockx wrote:
> > See inline.
> >
> > On Apr 3, 2005 4:15 AM, Greger V. Teigre <greger at teigre.com> wrote:
> >> So you have tested using avp_pushto() and it doesn't work with
> >> stateless replies? That's one of the things I have never tested. I'm
> >> not sure how sl_send_reply() builds a message, but it is probably
> >> likely that it copies fields and thus ignores (or changes) Contact.
> >> BTW, have you tried responding to the REGISTER using t_relay() ?  I
> >> have no clue what will happen, certainly not a 200 OK, maybe an
> >> error...
> >
> > t_relay() would just attempt to send the REGISTER message along. So I
> > don't think that is what I need.
> >
> >> If not,  maybe you'll get
> >> a message you can tweak with avp_*?!
> >>
> >> But to your "real" problem: Why not create a new table called
> >> 697_location and use save("697_location"); ?
> >
> > I need to completely avoid the DB hit because for every UTstarcom ATA
> > we ship we would have twice the number if database hits becuase every
> > ATA has 2 phone port. So when we have 50,000 ATAs provisioned, there
> > would be 100,000 REGISTER messages being processed periodically.
> >
> >> Or maybe even better: you can create a
> >> bypass when handling INVITEs and not authenticate if the caller is
> >> 697 and just rewrite the ruri directly to your voiceprompt.
> >
> > I have to reponse with a correct 200OK in order to get the ATA to give
> > dialtone on this port. Otherwise there is no reason for doing anything
> > with port 2. And with no dialtone, the subscriber will automatically
> > call tech support for help when they misconfigure their ATA.
> >
> >> g-)
> >>
> >> Java Rockx wrote:
> >>> Greg,
> >>>
> >>> I wish it were that easy. If you receive a REGISTER message, it does
> >>> contain the <Contact> header.
> >>>
> >>> But by doing the following a 200 OK is retured __without__ a
> >>> <Contact> header and therefore the SIP client must ignore the
> >>> response. So I really need to find a way to "copy" the Contact
> >>> header from the REGISTER message to the 200OK response.
> >>>
> >>> if (method=="REGISTER") {
> >>>     sl_send_reply("200", "OK");
> >>>     break;
> >>> };
> >>>
> >>> FYI, if you're wondering why such a silly thing is needed it is
> >>> because we use a UTstarcom iAN-02EX ATA which is two phone ports on
> >>> the back. We only configure Line 1 and in the past this caused
> >>> customers problems because they assume the Line 1 is the "left" port
> >>> and Line 2 is the "right" port.
> >>>
> >>> So the just plug in to the left port (Line 2) and realize the get no
> >>> dial tone. Then they call for support and blah blah blah.
> >>>
> >>> So we now configure Line 2 as extension 697. If they attempt to dial
> >>> __any__ number from Line 2 we route them to the Asterisk server and
> >>> play a "please reconfigure your ATA" message to prevent a support
> >>> call.
> >>>
> >>> The only problem is that in order for the ATA to give dial tone it
> >>> must successfully REGISTER.
> >>>
> >>> And from a SIP proxy point of view, there is no reason to ever fully
> >>> process these REGISTER messages.
> >>>
> >>> Regards,
> >>> Paul
> >>>
> >>> On Apr 2, 2005 3:50 AM, Greger V. Teigre <greger at teigre.com> wrote:
> >>>> No guarantees that this works, just a quick attempt:
> >>>> You already have a Contact header in the reply (I believe), you
> >>>> just need to manipulate it. (If not, you can use
> >>>> avp_pushto("Contact/reply","avpair") to create one)
> >>>>
> >>>> Use subst to get:
> >>>> Contact: <sip:username at ipaddress:port>;q=0.00;expires=3600.
> >>>>
> >>>> Here is a regex I put together as an example:
> >>>> /^Contact:(.*)sip:([a-zA-Z0-9_-]+)@([0-9.]+):([0-9]*)(.*)$/Contact:\1sip:\2@\3:\4>;q=0.00;expires=3600/
> >>>>
> >>>> Good luck! ;-)
> >>>> g-)
> >>>>
> >>>> Java Rockx wrote:
> >>>>> Hi All.
> >>>>>
> >>>>> I'm using ser-0.9.1 with auth_db enabled for user registration
> >>>>> stuff.
> >>>>>
> >>>>> I need to fake a REGISTRATION under certain circumstances. What I
> >>>>> want to do is sl_send_reply("200", "OK") when I get a REGISTER
> >>>>> message from user 697.
> >>>>>
> >>>>> I don't want to actually call the save("location") method because
> >>>>> I do not want to store 697 in the database or in ser's cache.
> >>>>>
> >>>>> So how can I sl_send_reply() and include the <Contact> header
> >>>>> which the save() function would normally insert in to the
> >>>>> response?
> >>>>>
> >>>>> I'm thinking I could use AVPOPs somehow, but I'm not sure.
> >>>>>
> >>>>> Can this be done?
> >>>>>
> >>>>> Regards,
> >>>>> Paul
> >>>>>
> >>>>> _______________________________________________
> >>>>> Serusers mailing list
> >>>>> serusers at lists.iptel.org
> >>>>> http://lists.iptel.org/mailman/listinfo/serusers
> 
>