[SR-Users] New SIP INVITE from UAS (new dialogue)

[Joao Alves]

Hi again,

Following up on this and having done some further tests, I was finally able to generate a SIP INVITE request using the following command sequence on the command file.

	$uac_req(method)="INVITE";
	$uac_req(ruri)=$shv(userAcontact);
	$uac_req(turi)="sip:1000 at decasa.website";
	$uac_req(furi)="sip:1001 at decasa.website";
	$uac_req(callid)=$var(call_id);

	$uac_req(hdrs)="Contact: <sip:1001 at 151.236.52.84:5060;transport=udp\r\n";
	$uac_req(hdrs)="Allow: SUBSCRIBE, NOTIFY, INVITE, ACK, CANCEL, BYE, REFER, INFO, MESSAGE\r\n";
	$uac_req(hdrs)="Content-Type: application/sdp\r\n";
	$uac_req(body)=$var(offer);

	uac_req_send();


I've attached the trace collected on the client side. Transaction/dialogue wise seems to have the correct behavior, however  I found two blocking issues which are causing the SIP INVITE to be rejected with a 400 "bad request" error code.

The first, it seems we cannot send more than one header on the SIP INVITE. That is I need to add the "Contact", "Allow" and "Content-Type" fields, but only the last one is inserted, which is the "Content-Type". If I marked it as a comment (with #), them the "Allow" is included instead.

The second issue is related with the inclusion of SDP offer on the body of the message. Since this SDP is quite a long one(1266 bytes) it is being truncated. 

I'm currently using kamailio 4.3.0.

Thanks,
Joao 

-----Original Message-----
From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Alex Balashov
Sent: sexta-feira, 19 de Junho de 2015 22:11
To: sr-users at lists.sip-router.org
Subject: Re: [SR-Users] New SIP INVITE from UAS (new dialogue)

On 06/19/2015 04:30 PM, Joao Alves wrote:

> Tell me one thing. If was not a SIP INVITE but just a SIP INFO or SIP 
> MESSAGE (since are stateless), would it be easier to do?

Yes, those would be more viable.

--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
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United States

Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

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