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Ankit Jayswal

1 Aug 2022 1 Aug '22

8:36 a.m.

Hello Team, 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. *OLD (Existing):* Contact: <sip:009169240xxx@*45.118.162.x:5080*;alias=10.52.26.102~5080~1> *NEW (Needed):* Contact: <sip:00912269240xxx@*10.52.26.98:5060 <http://10.52.26.98:5060>*> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value. Please help me with this. -- Thanks & Regards, *Ankit Jayswal* | Specialist - Software Development

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Henning Westerholt

1 Aug 1 Aug

8:41 a.m.

Hello, the topos module can do that, among other things. Alternatively there is also the topoh module, which do not need any backend storage. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com<https://gilawa.com/> From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Ankit Jayswal Sent: Monday, August 1, 2022 2:37 PM To: sr-users(a)lists.kamailio.org Cc: Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla <devanand.jalla(a)engagely.ai> Subject: [SR-Users] Contact header modification - Kamailio Hello Team, 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. OLD (Existing): Contact: <sip:009169240xxx@45.118.162.x:5080;alias=10.52.26.102~5080~1> NEW (Needed): Contact: <sip:00912269240xxx@10.52.26.98:5060<http://10.52.26.98:5060>> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value. Please help me with this. -- Thanks & Regards, Ankit Jayswal | Specialist - Software Development

Ankit Jayswal

10:25 a.m.

Hello, Thanks for your reply, but I am looking to replace the value in the Contact header. Which function can help me to do this ? I tried, *assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060 <http://sip:00912269240xxx@10.52.26.98:5060>>");* But that is not working properly, it assigns value but previous value also remains in it. On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw(a)gilawa.com> wrote:

...

Hello, the topos module can do that, among other things. Alternatively there is also the topoh module, which do not need any backend storage. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com *From:* sr-users <sr-users-bounces(a)lists.kamailio.org> *On Behalf Of *Ankit Jayswal *Sent:* Monday, August 1, 2022 2:37 PM *To:* sr-users(a)lists.kamailio.org *Cc:* Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla < devanand.jalla(a)engagely.ai> *Subject:* [SR-Users] Contact header modification - Kamailio Hello Team, 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. *OLD (Existing):* Contact: <sip:009169240xxx@*45.118.162.x:5080*;alias=10.52.26.102~5080~1> *NEW (Needed):* Contact: <sip:00912269240xxx@*10.52.26.98:5060 <http://10.52.26.98:5060>*> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value. Please help me with this. -- Thanks & Regards, *Ankit Jayswal* | Specialist - Software Development

Henning Westerholt

11:01 a.m.

Hello, you need to do a “remove_hf(“Contact”)” before. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com<https://gilawa.com/> From: Ankit Jayswal <ankit.jayswal(a)engagely.ai> Sent: Monday, August 1, 2022 4:26 PM To: Henning Westerholt <hw(a)gilawa.com> Cc: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>rg>; Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla <devanand.jalla(a)engagely.ai> Subject: Re: [SR-Users] Contact header modification - Kamailio Hello, Thanks for your reply, but I am looking to replace the value in the Contact header. Which function can help me to do this ? I tried, assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060<http://sip:00912269240xxx@10.52.26.98:5060>>"); But that is not working properly, it assigns value but previous value also remains in it. On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw@gilawa.com<mailto:hw@gilawa.com>> wrote: Hello, the topos module can do that, among other things. Alternatively there is also the topoh module, which do not need any backend storage. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com<https://gilawa.com/> From: sr-users <sr-users-bounces@lists.kamailio.org<mailto:sr-users-bounces@lists.kamailio.org>> On Behalf Of Ankit Jayswal Sent: Monday, August 1, 2022 2:37 PM To: sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> Cc: Amey Naik <amey.naik@engagely.ai<mailto:amey.naik@engagely.ai>>; Devanand Jalla <devanand.jalla@engagely.ai<mailto:devanand.jalla@engagely.ai>> Subject: [SR-Users] Contact header modification - Kamailio Hello Team, 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. OLD (Existing): Contact: <sip:009169240xxx@45.118.162.x:5080;alias=10.52.26.102~5080~1> NEW (Needed): Contact: <sip:00912269240xxx@10.52.26.98:5060<http://10.52.26.98:5060>> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value. Please help me with this. -- Thanks & Regards, Ankit Jayswal | Specialist - Software Development

Alex Balashov

12:47 p.m.

Before you do this, I would ask yourself why you’re doing this, and whether it’s a good idea from a technical point of view.

...

On Aug 1, 2022, at 8:36 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai> wrote: Hello Team, 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. OLD (Existing): Contact: <sip:009169240xxx@45.118.162.x:5080;alias=10.52.26.102~5080~1> NEW (Needed): Contact: <sip:00912269240xxx@10.52.26.98:5060> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value. Please help me with this. -- Thanks & Regards, Ankit Jayswal | Specialist - Software Development __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

Ankit Jayswal

2 Aug 2 Aug

1:09 a.m.

Hello, Yes, actually my call flow for outbound calls is, Kamailio => Asterisk => Kamailio (route(PSTN)). SIP trunk is available at Kamailio server. So, when final outbound INVITE goes to the SIP trunk provider it expects a particular Contact header IP, instead of Asterisk server IP. On Mon, Aug 1, 2022 at 10:20 PM Alex Balashov <abalashov(a)evaristesys.com> wrote:

...

Before you do this, I would ask yourself why you’re doing this, and whether it’s a good idea from a technical point of view.

On Aug 1, 2022, at 8:36 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai>

wrote:

Hello Team, 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.

OLD (Existing): Contact: <sip:009169240xxx@45.118.162.x:5080;alias=10.52.26.102~5080~1> NEW (Needed): Contact: <sip:00912269240xxx@10.52.26.98:5060> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value.

Please help me with this.

-- Thanks & Regards, Ankit Jayswal | Specialist - Software Development __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to

the sender!

Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Ankit Jayswal

1:12 a.m.

Hello, 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. I am just looking for a function that can modify the Contact header value of an existing Contact header. On Mon, Aug 1, 2022 at 8:31 PM Henning Westerholt <hw(a)gilawa.com> wrote:

...

Hello, you need to do a “remove_hf(“Contact”)” before. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com *From:* Ankit Jayswal <ankit.jayswal(a)engagely.ai> *Sent:* Monday, August 1, 2022 4:26 PM *To:* Henning Westerholt <hw(a)gilawa.com> *Cc:* Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>rg>; Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla < devanand.jalla(a)engagely.ai> *Subject:* Re: [SR-Users] Contact header modification - Kamailio Hello, Thanks for your reply, but I am looking to replace the value in the Contact header. Which function can help me to do this ? I tried, *assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060 <http://sip:00912269240xxx@10.52.26.98:5060>>");* But that is not working properly, it assigns value but previous value also remains in it. On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw(a)gilawa.com> wrote: Hello, the topos module can do that, among other things. Alternatively there is also the topoh module, which do not need any backend storage. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com *From:* sr-users <sr-users-bounces(a)lists.kamailio.org> *On Behalf Of *Ankit Jayswal *Sent:* Monday, August 1, 2022 2:37 PM *To:* sr-users(a)lists.kamailio.org *Cc:* Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla < devanand.jalla(a)engagely.ai> *Subject:* [SR-Users] Contact header modification - Kamailio Hello Team, 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. *OLD (Existing):* Contact: <sip:009169240xxx@*45.118.162.x:5080*;alias=10.52.26.102~5080~1> *NEW (Needed):* Contact: <sip:00912269240xxx@*10.52.26.98:5060 <http://10.52.26.98:5060>*> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value. Please help me with this. -- Thanks & Regards, *Ankit Jayswal* | Specialist - Software Development

Alex Balashov

3:21 a.m.

The suggestion given by Henning was to remove the existing Contact header, and replace it with whatever value you like.

...

On Aug 2, 2022, at 1:12 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai> wrote: Hello, 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. I am just looking for a function that can modify the Contact header value of an existing Contact header. On Mon, Aug 1, 2022 at 8:31 PM Henning Westerholt <hw(a)gilawa.com> wrote: Hello, you need to do a “remove_hf(“Contact”)” before. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com From: Ankit Jayswal <ankit.jayswal(a)engagely.ai> Sent: Monday, August 1, 2022 4:26 PM To: Henning Westerholt <hw(a)gilawa.com> Cc: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>rg>; Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla <devanand.jalla(a)engagely.ai> Subject: Re: [SR-Users] Contact header modification - Kamailio Hello, Thanks for your reply, but I am looking to replace the value in the Contact header. Which function can help me to do this ? I tried, assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060>"); But that is not working properly, it assigns value but previous value also remains in it. On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw(a)gilawa.com> wrote: Hello, the topos module can do that, among other things. Alternatively there is also the topoh module, which do not need any backend storage. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Ankit Jayswal Sent: Monday, August 1, 2022 2:37 PM To: sr-users(a)lists.kamailio.org Cc: Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla <devanand.jalla(a)engagely.ai> Subject: [SR-Users] Contact header modification - Kamailio Hello Team, 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. OLD (Existing): Contact: <sip:009169240xxx@45.118.162.x:5080;alias=10.52.26.102~5080~1> NEW (Needed): Contact: <sip:00912269240xxx@10.52.26.98:5060> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value. Please help me with this. -- Thanks & Regards, Ankit Jayswal | Specialist - Software Development __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

Ankit Jayswal

3 Aug 3 Aug

8:06 a.m.

Hello, Can you suggest directly replacing the value of the Contact header ? As remove_hf("Contact") does not work for me. I need just *Contact: <sip:009122692405xx@10.52.26.98:5060 <http://sip:009122692405xx@10.52.26.98:5060>> *instead of, *Contact: <sip:0091692405xx@45.118.162.x:5080;alias=10.52.26.102~5080~1>* On Tue, Aug 2, 2022 at 12:56 PM Alex Balashov <abalashov(a)evaristesys.com> wrote:

...

The suggestion given by Henning was to remove the existing Contact header, and replace it with whatever value you like.

On Aug 2, 2022, at 1:12 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai>

wrote:

Hello, 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.

I am just looking for a function that can modify the Contact header

value of an existing Contact header.

On Mon, Aug 1, 2022 at 8:31 PM Henning Westerholt <hw(a)gilawa.com> wrote: Hello, you need to do a “remove_hf(“Contact”)” before. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com From: Ankit Jayswal <ankit.jayswal(a)engagely.ai> Sent: Monday, August 1, 2022 4:26 PM To: Henning Westerholt <hw(a)gilawa.com> Cc: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>rg>;

Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla < devanand.jalla(a)engagely.ai>

Subject: Re: [SR-Users] Contact header modification - Kamailio Hello, Thanks for your reply, but I am looking to replace the value in the

Contact header. Which function can help me to do this ?

I tried, assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060>"); But that is not working properly, it assigns value but previous value

also remains in it.

On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw(a)gilawa.com> wrote: Hello, the topos module can do that, among other things. Alternatively there is

also the topoh module, which do not need any backend storage.

Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Ankit

Jayswal

Sent: Monday, August 1, 2022 2:37 PM To: sr-users(a)lists.kamailio.org Cc: Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla <

devanand.jalla(a)engagely.ai>

Subject: [SR-Users] Contact header modification - Kamailio Hello Team, 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.

Please help me with this.

the sender!

Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Alex Balashov

10:57 a.m.

How did you conclude that it doesn’t work?

...

On Aug 3, 2022, at 8:06 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai> wrote: Hello, Can you suggest directly replacing the value of the Contact header ? As remove_hf("Contact") does not work for me. I need just Contact: <sip:009122692405xx@10.52.26.98:5060> instead of, Contact: <sip:0091692405xx@45.118.162.x:5080;alias=10.52.26.102~5080~1> On Tue, Aug 2, 2022 at 12:56 PM Alex Balashov <abalashov(a)evaristesys.com> wrote: The suggestion given by Henning was to remove the existing Contact header, and replace it with whatever value you like.

-- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

Ankit Jayswal

4 Aug 4 Aug

1:26 a.m.

Yes, When I use *remove_hf()* and *insert_hf()* it doesn't remove the value of the Contact header properly. Below code executed: remove_hf("Contact"); insert_hf("Contact: <sip:00912269240500@10.52.26.98:5060>\r\n", "Contact"); I have given the sngrep INVITE request below after applying the above code. See the highlighted contact header not removing previous value properly. [image: contact_header.png] On Wed, Aug 3, 2022 at 8:30 PM Alex Balashov <abalashov(a)evaristesys.com> wrote:

...

How did you conclude that it doesn’t work?

On Aug 3, 2022, at 8:06 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai>

wrote:

Hello, Can you suggest directly replacing the value of the Contact header ? As

remove_hf("Contact") does not work for me.

I need just Contact: <sip:009122692405xx@10.52.26.98:5060> instead of, Contact: <sip:0091692405xx@45.118.162.x:5080;alias=10.52.26.102~5080~1> On Tue, Aug 2, 2022 at 12:56 PM Alex Balashov <abalashov(a)evaristesys.com>

wrote:

The suggestion given by Henning was to remove the existing Contact

header, and replace it with whatever value you like.

> On Aug 2, 2022, at 1:12 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai>

wrote:

> > Hello, > 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.

> I am just looking for a function that can modify the Contact header

value of an existing Contact header.

> > On Mon, Aug 1, 2022 at 8:31 PM Henning Westerholt <hw(a)gilawa.com>

wrote:

> Hello, > > > > you need to do a “remove_hf(“Contact”)” before. > > > > Cheers, > > > > Henning > > > > -- > > Henning Westerholt – https://skalatan.de/blog/ > > Kamailio services – https://gilawa.com > > > > From: Ankit Jayswal <ankit.jayswal(a)engagely.ai> > Sent: Monday, August 1, 2022 4:26 PM > To: Henning Westerholt <hw(a)gilawa.com> > Cc: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>rg>;

Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla < devanand.jalla(a)engagely.ai>

> Subject: Re: [SR-Users] Contact header modification - Kamailio > > > > Hello, > Thanks for your reply, but I am looking to replace the value in the

Contact header. Which function can help me to do this ?

> I tried, > assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060>"); > > > But that is not working properly, it assigns value but previous value

also remains in it.

> > > > On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw(a)gilawa.com>

wrote:

> > Hello, > > > > the topos module can do that, among other things. Alternatively there

is also the topoh module, which do not need any backend storage.

> > > > Cheers, > > > > Henning > > > > -- > > Henning Westerholt – https://skalatan.de/blog/ > > Kamailio services – https://gilawa.com > > > > From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of

Ankit Jayswal

> Sent: Monday, August 1, 2022 2:37 PM > To: sr-users(a)lists.kamailio.org > Cc: Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla <

devanand.jalla(a)engagely.ai>

> Subject: [SR-Users] Contact header modification - Kamailio > > > > Hello Team, > > 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.

> > OLD (Existing): > > Contact: <sip:009169240xxx@45.118.162.x

:5080;alias=10.52.26.102~5080~1>

> > > > NEW (Needed): > > Contact: <sip:00912269240xxx@10.52.26.98:5060> > > I tried various functions from the textops module but no hope. > I am looking for a function that can replace the contact header's

value. Please help me with this.

> > > > -- > > Thanks & Regards, > Ankit Jayswal | Specialist - Software Development > > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions > * sr-users(a)lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only

to the sender!

Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

the sender!

Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to

the sender!

Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Yuriy Gorlichenko

3:09 a.m.

it looks like you are handling contact manually but also call "fix_nated_contact/add_contact_alias" function as well. You can't call 2 functions for the same header - it breaks the logic of how kamailio deals with the config at the postprocessing. There are 2 ways to fix it: - remove nat helper functions touching contact ( preferred as you don't need it anymore for the INVITE flow ) - 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 ) 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. You have to deal with Record-Route/Route headers to be able to manage the routing. чт, 4 авг. 2022 г. в 07:30, Ankit Jayswal <ankit.jayswal(a)engagely.ai>ai>:

...

How did you conclude that it doesn’t work?

On Aug 3, 2022, at 8:06 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai>

wrote:

Hello, Can you suggest directly replacing the value of the Contact header ? As

remove_hf("Contact") does not work for me.

I need just Contact: <sip:009122692405xx@10.52.26.98:5060> instead of, Contact: <sip:0091692405xx@45.118.162.x:5080;alias=10.52.26.102~5080~1> On Tue, Aug 2, 2022 at 12:56 PM Alex Balashov <

abalashov(a)evaristesys.com> wrote:

The suggestion given by Henning was to remove the existing Contact

header, and replace it with whatever value you like.

> On Aug 2, 2022, at 1:12 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai>

wrote:

> > Hello, > 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.

> I am just looking for a function that can modify the Contact header

value of an existing Contact header.

> > On Mon, Aug 1, 2022 at 8:31 PM Henning Westerholt <hw(a)gilawa.com>

wrote:

Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla < devanand.jalla(a)engagely.ai>

> Subject: Re: [SR-Users] Contact header modification - Kamailio > > > > Hello, > Thanks for your reply, but I am looking to replace the value in the

Contact header. Which function can help me to do this ?

> I tried, > assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060>"); > > > But that is not working properly, it assigns value but previous value

also remains in it.

> > > > On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw(a)gilawa.com>

wrote:

> > Hello, > > > > the topos module can do that, among other things. Alternatively there

is also the topoh module, which do not need any backend storage.

Ankit Jayswal

> Sent: Monday, August 1, 2022 2:37 PM > To: sr-users(a)lists.kamailio.org > Cc: Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla <

devanand.jalla(a)engagely.ai>

> Subject: [SR-Users] Contact header modification - Kamailio > > > > Hello Team, > > 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.

> > OLD (Existing): > > Contact: <sip:009169240xxx@45.118.162.x

:5080;alias=10.52.26.102~5080~1>

value. Please help me with this.

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__________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Henning Westerholt

4:35 a.m.

Hello, please do not add the Contact header as second parameter to the insert_hf. Try this out: remove_hf("Contact"); insert_hf("Contact: <sip:00912269240500@10.52.26.98:5060<http://sip:00912269240500@10.52.26.98:5060>>\r\n"); Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com<https://gilawa.com/> From: sr-users <sr-users-bounces(a)lists.kamailio.org> On Behalf Of Ankit Jayswal Sent: Thursday, August 4, 2022 7:27 AM To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> Subject: Re: [SR-Users] Contact header modification - Kamailio Yes, When I use remove_hf() and insert_hf() it doesn't remove the value of the Contact header properly. Below code executed: remove_hf("Contact"); insert_hf("Contact: <sip:00912269240500@10.52.26.98:5060<http://sip:00912269240500@10.52.26.98:5060>>\r\n", "Contact"); I have given the sngrep INVITE request below after applying the above code. See the highlighted contact header not removing previous value properly. [cid:image001.png@01D8A7ED.E4CD09C0] On Wed, Aug 3, 2022 at 8:30 PM Alex Balashov <abalashov@evaristesys.com<mailto:abalashov@evaristesys.com>> wrote: How did you conclude that it doesn’t work?

...

On Aug 3, 2022, at 8:06 AM, Ankit Jayswal <ankit.jayswal@engagely.ai<mailto:ankit.jayswal@engagely.ai>> wrote: Hello, Can you suggest directly replacing the value of the Contact header ? As remove_hf("Contact") does not work for me. I need just Contact: <sip:009122692405xx@10.52.26.98:5060<http://sip:009122692405xx@10.52.26.98:5060>> instead of, Contact: <sip:0091692405xx@45.118.162.x:5080;alias=10.52.26.102~5080~1> On Tue, Aug 2, 2022 at 12:56 PM Alex Balashov <abalashov@evaristesys.com<mailto:abalashov@evaristesys.com>> wrote: The suggestion given by Henning was to remove the existing Contact header, and replace it with whatever value you like.

On Aug 2, 2022, at 1:12 AM, Ankit Jayswal <ankit.jayswal@engagely.ai<mailto:ankit.jayswal@engagely.ai>> wrote: Hello, 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. I am just looking for a function that can modify the Contact header value of an existing Contact header. On Mon, Aug 1, 2022 at 8:31 PM Henning Westerholt <hw@gilawa.com<mailto:hw@gilawa.com>> wrote: Hello, you need to do a “remove_hf(“Contact”)” before. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com From: Ankit Jayswal <ankit.jayswal@engagely.ai<mailto:ankit.jayswal@engagely.ai>> Sent: Monday, August 1, 2022 4:26 PM To: Henning Westerholt <hw@gilawa.com<mailto:hw@gilawa.com>> Cc: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>>; Amey Naik <amey.naik@engagely.ai<mailto:amey.naik@engagely.ai>>; Devanand Jalla <devanand.jalla@engagely.ai<mailto:devanand.jalla@engagely.ai>> Subject: Re: [SR-Users] Contact header modification - Kamailio Hello, Thanks for your reply, but I am looking to replace the value in the Contact header. Which function can help me to do this ? I tried, assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060<http://sip:00912269240xxx@10.52.26.98:5060>>"); But that is not working properly, it assigns value but previous value also remains in it. On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw@gilawa.com<mailto:hw@gilawa.com>> wrote: Hello, the topos module can do that, among other things. Alternatively there is also the topoh module, which do not need any backend storage. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com From: sr-users <sr-users-bounces@lists.kamailio.org<mailto:sr-users-bounces@lists.kamailio.org>> On Behalf Of Ankit Jayswal Sent: Monday, August 1, 2022 2:37 PM To: sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> Cc: Amey Naik <amey.naik@engagely.ai<mailto:amey.naik@engagely.ai>>; Devanand Jalla <devanand.jalla@engagely.ai<mailto:devanand.jalla@engagely.ai>> Subject: [SR-Users] Contact header modification - Kamailio Hello Team, 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. OLD (Existing): Contact: <sip:009169240xxx@45.118.162.x:5080;alias=10.52.26.102~5080~1> NEW (Needed): Contact: <sip:00912269240xxx@10.52.26.98:5060<http://sip:00912269240xxx@10.52.26.98:5060>> I tried various functions from the textops module but no hope. I am looking for a function that can replace the contact header's value. Please help me with this. -- Thanks & Regards, Ankit Jayswal | Specialist - Software Development __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

-- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Ankit Jayswal

6:09 a.m.

Hello, This way the contact header is *not* getting inserted. Below syntax is only able to insert it. insert_hf("Contact: <sip:00912269240500@10.52.26.98:5060>\r\n", "Contact"); My problem is with *remove_hf(); *function only. It does not remove the value. On Thu, Aug 4, 2022 at 2:05 PM Henning Westerholt <hw(a)gilawa.com> wrote:

...

Hello, please do not add the Contact header as second parameter to the insert_hf. Try this out: remove_hf("Contact"); insert_hf("Contact: <sip:00912269240500@10.52.26.98:5060>\r\n"); Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com *From:* sr-users <sr-users-bounces(a)lists.kamailio.org> *On Behalf Of *Ankit Jayswal *Sent:* Thursday, August 4, 2022 7:27 AM *To:* Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> *Subject:* Re: [SR-Users] Contact header modification - Kamailio Yes, When I use *remove_hf()* and *insert_hf()* it doesn't remove the value of the Contact header properly. Below code executed: remove_hf("Contact"); insert_hf("Contact: <sip:00912269240500@10.52.26.98:5060>\r\n", "Contact"); I have given the sngrep INVITE request below after applying the above code. See the highlighted contact header not removing previous value properly. On Wed, Aug 3, 2022 at 8:30 PM Alex Balashov <abalashov(a)evaristesys.com> wrote: How did you conclude that it doesn’t work?

On Aug 3, 2022, at 8:06 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai>

wrote:

Hello, Can you suggest directly replacing the value of the Contact header ? As

remove_hf("Contact") does not work for me.

wrote:

The suggestion given by Henning was to remove the existing Contact

header, and replace it with whatever value you like.

> On Aug 2, 2022, at 1:12 AM, Ankit Jayswal <ankit.jayswal(a)engagely.ai>

wrote:

> > Hello, > 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.

> I am just looking for a function that can modify the Contact header

value of an existing Contact header.

> > On Mon, Aug 1, 2022 at 8:31 PM Henning Westerholt <hw(a)gilawa.com>

wrote:

Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla < devanand.jalla(a)engagely.ai>

> Subject: Re: [SR-Users] Contact header modification - Kamailio > > > > Hello, > Thanks for your reply, but I am looking to replace the value in the

Contact header. Which function can help me to do this ?

> I tried, > assign_hf_value("Contact", "<sip:00912269240xxx@10.52.26.98:5060>"); > > > But that is not working properly, it assigns value but previous value

also remains in it.

> > > > On Mon, Aug 1, 2022 at 6:11 PM Henning Westerholt <hw(a)gilawa.com>

wrote:

> > Hello, > > > > the topos module can do that, among other things. Alternatively there

is also the topoh module, which do not need any backend storage.

Ankit Jayswal

> Sent: Monday, August 1, 2022 2:37 PM > To: sr-users(a)lists.kamailio.org > Cc: Amey Naik <amey.naik(a)engagely.ai>ai>; Devanand Jalla <

devanand.jalla(a)engagely.ai>

> Subject: [SR-Users] Contact header modification - Kamailio > > > > Hello Team, > > 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.

OLD (Existing): Contact: <sip:009169240xxx@45.118.162.x:5080;alias=10.52.26.102~5080~1

value. Please help me with this.

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participants (4)

Alex Balashov
Ankit Jayswal
Henning Westerholt
Yuriy Gorlichenko