Kind of depends on which RFC you’re talking about.

 

As Fred asked – do you have `force_rport` set?  This is defined in RFC3581.  In an *ideal* world, your UAC would put the `rport` parameter (without value) in it’s Via header.   Kamailio can be told to “consider this request like there’s an `rport` in the top most via header” by setting `force_rport`.  This is what you want based on your description below.

 

Regards,

Kaufman

 

 

 

From: Antonio via sr-users <sr-users@lists.kamailio.org>
Sent: Sunday, March 10, 2024 11:08 AM
To: Fred Posner <fred@pgpx.io>
Cc: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>; Antonio <satskiy.a@gmail.com>
Subject: [SR-Users] Re: SIP Redirect Server

 

CAUTION: This email originated from outside the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.

 

Please close request as I found out that this is required behaviour according to RFC 

 




 

 

On Sun, 10 Mar 2024 at 15:00, Fred Posner <fred@pgpx.io> wrote:

Do you have force_rport anywhere in the config?

 

-- Fred Posner

Sent from mobile

Phone: +1 (352) 664-3733

 

 



On Mar 10, 2024, at 8:37 AM, Antonio via sr-users <sr-users@lists.kamailio.org> wrote:



Hi everyone

I have a small question:

i want to set up a basic SIP Redirect Server

so I install Kamailio v5.3

and  comment  default  request route and set simple

 

request_route {

rewritehostport("1.2.3.4");

sl_send_reply("302", "Moved Temporarily");

}

 

but for some reason, Kamailio does not care about the port and sends a reply to 5060

<image.png>

 

i also tried to delete   rewritehostport

but it only deletes Contact: from the reply

but reply  itself is still sent to  5060 port

<image.png>

 

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