<div dir="ltr">it looks like you are handling contact manually but also call "fix_nated_contact/add_contact_alias" function as well. <br>You can't call 2 functions for the same header - it breaks the logic of how kamailio deals with the config at the postprocessing. <br>There are 2 ways to fix it:<br>- remove nat helper functions touching contact ( preferred as you don't need it anymore for the INVITE flow )<br>- use msg_apply_changes after the first function (which I would not recommend as it rereads the message again and defacto Kamailio parses the same message twice )<br><br>However as Alex Balashow mentioned - this is a really bad approach - to rewrite contact on the proxy, and it has to be used for corner cases and you are not at one of them.<br>You have to deal with Record-Route/Route headers to be able to manage the routing.<br><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">чт, 4 авг. 2022 г. в 07:30, Ankit Jayswal <<a href="mailto:ankit.jayswal@engagely.ai">ankit.jayswal@engagely.ai</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Yes,<div>When I use <b>remove_hf()</b> and <b>insert_hf()</b> it doesn't remove the value of the Contact header properly.</div><div><br></div><div>Below code executed:</div><div><span style="background-color:rgb(204,204,204)">remove_hf("Contact");<br>insert_hf("Contact: <<a href="http://sip:00912269240500@10.52.26.98:5060" target="_blank">sip:00912269240500@10.52.26.98:5060</a>>\r\n", "Contact");</span><br></div><div><br></div><div>I have given the sngrep INVITE request below after applying the above code. See the highlighted contact header not removing previous value properly.</div><div><br></div><div><img src="cid:ii_l6elhn430" alt="contact_header.png" width="472" height="241"><br></div><div><br></div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Aug 3, 2022 at 8:30 PM Alex Balashov <<a href="mailto:abalashov@evaristesys.com" target="_blank">abalashov@evaristesys.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">How did you conclude that it doesn’t work?<br>
<br>
> On Aug 3, 2022, at 8:06 AM, Ankit Jayswal <<a href="mailto:ankit.jayswal@engagely.ai" target="_blank">ankit.jayswal@engagely.ai</a>> wrote:<br>
> <br>
> Hello,<br>
> <br>
> Can you suggest directly replacing the value of the Contact header ? As remove_hf("Contact") does not work for me.<br>
> <br>
> I need just Contact: <<a href="http://sip:009122692405xx@10.52.26.98:5060" rel="noreferrer" target="_blank">sip:009122692405xx@10.52.26.98:5060</a>> instead of,<br>
> Contact: <sip:0091692405xx@45.118.162.x:5080;alias=10.52.26.102~5080~1><br>
> <br>
> <br>
> On Tue, Aug 2, 2022 at 12:56 PM Alex Balashov <<a href="mailto:abalashov@evaristesys.com" target="_blank">abalashov@evaristesys.com</a>> wrote:<br>
> The suggestion given by Henning was to remove the existing Contact header, and replace it with whatever value you like.<br>
> <br>
> > On Aug 2, 2022, at 1:12 AM, Ankit Jayswal <<a href="mailto:ankit.jayswal@engagely.ai" target="_blank">ankit.jayswal@engagely.ai</a>> wrote:<br>
> > <br>
> > Hello,<br>
> > Whenever I try the remove_hf("Contact") function the call leg is divided into the two parts and the call is not getting set up properly and not progressing.<br>
> > I am just looking for a function that can modify the Contact header value of an existing Contact header.<br>
> > <br>
> > On Mon, Aug 1, 2022 at 8:31 PM Henning Westerholt <<a href="mailto:hw@gilawa.com" target="_blank">hw@gilawa.com</a>> wrote:<br>
> > Hello,<br>
> > <br>
> > <br>
> > <br>
> > you need to do a “remove_hf(“Contact”)” before.<br>
> > <br>
> > <br>
> > <br>
> > Cheers,<br>
> > <br>
> > <br>
> > <br>
> > Henning<br>
> > <br>
> > <br>
> > <br>
> > --<br>
> > <br>
> > Henning Westerholt – <a href="https://skalatan.de/blog/" rel="noreferrer" target="_blank">https://skalatan.de/blog/</a><br>
> > <br>
> > Kamailio services – <a href="https://gilawa.com" rel="noreferrer" target="_blank">https://gilawa.com</a><br>
> > <br>
> > <br>
> > <br>
> > From: Ankit Jayswal <<a href="mailto:ankit.jayswal@engagely.ai" target="_blank">ankit.jayswal@engagely.ai</a>> <br>
> > Sent: Monday, August 1, 2022 4:26 PM<br>
> > To: Henning Westerholt <<a href="mailto:hw@gilawa.com" target="_blank">hw@gilawa.com</a>><br>
> > Cc: Kamailio (SER) - Users Mailing List <<a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a>>; Amey Naik <<a href="mailto:amey.naik@engagely.ai" target="_blank">amey.naik@engagely.ai</a>>; Devanand Jalla <<a href="mailto:devanand.jalla@engagely.ai" target="_blank">devanand.jalla@engagely.ai</a>><br>
> > Subject: Re: [SR-Users] Contact header modification - Kamailio<br>
> > <br>
> > <br>
> > <br>
> > Hello,<br>
> > Thanks for your reply, but I am looking to replace the value in the Contact header. Which function can help me to do this ?<br>
> > I tried, <br>
> > assign_hf_value("Contact", "<<a href="http://sip:00912269240xxx@10.52.26.98:5060" rel="noreferrer" target="_blank">sip:00912269240xxx@10.52.26.98:5060</a>>");<br>
> > <br>
> > <br>
> > But that is not working properly, it assigns value but previous value also remains in it.<br>
> > <br>
> > <br>
> > <br>
> > On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <<a href="mailto:hw@gilawa.com" target="_blank">hw@gilawa.com</a>> wrote:<br>
> > <br>
> > Hello,<br>
> > <br>
> > <br>
> > <br>
> > the topos module can do that, among other things. Alternatively there is also the topoh module, which do not need any backend storage.<br>
> > <br>
> > <br>
> > <br>
> > Cheers,<br>
> > <br>
> > <br>
> > <br>
> > Henning<br>
> > <br>
> > <br>
> > <br>
> > --<br>
> > <br>
> > Henning Westerholt – <a href="https://skalatan.de/blog/" rel="noreferrer" target="_blank">https://skalatan.de/blog/</a><br>
> > <br>
> > Kamailio services – <a href="https://gilawa.com" rel="noreferrer" target="_blank">https://gilawa.com</a><br>
> > <br>
> > <br>
> > <br>
> > From: sr-users <<a href="mailto:sr-users-bounces@lists.kamailio.org" target="_blank">sr-users-bounces@lists.kamailio.org</a>> On Behalf Of Ankit Jayswal<br>
> > Sent: Monday, August 1, 2022 2:37 PM<br>
> > To: <a href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a><br>
> > Cc: Amey Naik <<a href="mailto:amey.naik@engagely.ai" target="_blank">amey.naik@engagely.ai</a>>; Devanand Jalla <<a href="mailto:devanand.jalla@engagely.ai" target="_blank">devanand.jalla@engagely.ai</a>><br>
> > Subject: [SR-Users] Contact header modification - Kamailio<br>
> > <br>
> > <br>
> > <br>
> > Hello Team,<br>
> > <br>
> > I am in need to modify the contact header in Kamailio before sending an INVITE request to the SIP trunk provider. Basically the IP address I need to modify in the contact header. Please suggest a better way to do this. Below is an example.<br>
> > <br>
> > OLD (Existing):<br>
> > <br>
> > Contact: <sip:009169240xxx@45.118.162.x:5080;alias=10.52.26.102~5080~1><br>
> > <br>
> > <br>
> > <br>
> > NEW (Needed):<br>
> > <br>
> > Contact: <<a href="http://sip:00912269240xxx@10.52.26.98:5060" rel="noreferrer" target="_blank">sip:00912269240xxx@10.52.26.98:5060</a>><br>
> > <br>
> > I tried various functions from the textops module but no hope.<br>
> > I am looking for a function that can replace the contact header's value. Please help me with this.<br>
> > <br>
> > <br>
> > <br>
> > --<br>
> > <br>
> > Thanks & Regards,<br>
> > Ankit Jayswal | Specialist - Software Development<br>
> > <br>
> > __________________________________________________________<br>
> > Kamailio - Users Mailing List - Non Commercial Discussions<br>
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> > Important: keep the mailing list in the recipients, do not reply only to the sender!<br>
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> <br>
> -- <br>
> Alex Balashov | Principal | Evariste Systems LLC<br>
> <br>
> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)<br>
> Web: <a href="http://www.evaristesys.com/" rel="noreferrer" target="_blank">http://www.evaristesys.com/</a>, <a href="http://www.csrpswitch.com/" rel="noreferrer" target="_blank">http://www.csrpswitch.com/</a><br>
> <br>
> <br>
> __________________________________________________________<br>
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> __________________________________________________________<br>
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<br>
-- <br>
Alex Balashov | Principal | Evariste Systems LLC<br>
<br>
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)<br>
Web: <a href="http://www.evaristesys.com/" rel="noreferrer" target="_blank">http://www.evaristesys.com/</a>, <a href="http://www.csrpswitch.com/" rel="noreferrer" target="_blank">http://www.csrpswitch.com/</a><br>
<br>
<br>
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</blockquote></div>
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</blockquote></div>