11 Aug
2022
11 Aug
'22
4:59 p.m.
Hello All
kamailio 5.5.3
KEMI Python
Lab environemnt
Is there a reason why this does not work?
Lines 2 and 3 work but the removal of the initial From is not working on Line 1
1. KSR.hdr.remove("From")
2. KSR.hdr.append_to_reply("From: "
+KSR.pv.gete("$fn") + " <"+KSR.pv.gete("$fu") +
">" + ";tag=" +KSR.pv.gete("$ft") + "--1234" +
"\r\n")
3. KSR.sl.sl_send_reply(200, "OK")
In a SUBSCRIBE/NOTIFY scenario I am trying to control the From Tag returned in the 200OK
so I can use the same one in subsequent NOTIFY messages generated outside of Kamailio, my
theory is use the From tag in the Subscribe and append it on the reply with -1234 for
example (this is only in a Lab at this stage, any other options please let me know)
Whenever I do this I end up with 2 From headers (see below)
SIP/2.0 200 OK
Via: SIP/2.0/UDP
192.168.1.67:5060;branch=z9hG4bK-f710a11a;rport=46404;received=xx.yy.xx.yy
From: " testuser" sip:limeant30@sip.viazeta.com;tag=bf8745def06c7b12
To: <sip: testuser(a)sip.viazeta.com>;tag=47969b75f14e6954812863912d1cf21c.b5f3318f
Call-ID: b21ba770-9b5836aa(a)192.168.1.67
CSeq: 18137 SUBSCRIBE
Contact: "testuser" <sip:testuser@ xx.yy.xx.yy:46404>
Expires: 3600
From: "testuser" sip:testuser@testbed.com;tag=bf8745def06c7b12--1234
Content-Length: 0
I have tried many many variations but the original From header always persists I have
checked the debug logs and it says it has been removed
Anyone know what I am missing? And how to get KSR.hdr.remove("From") to work.
Looking in a debug log the header is removed.
Lewis
11 Aug
11 Aug
6:19 p.m.
Apologies for the confusion I am actually trying to access to To tag in the sl reply and
fix that to what I want (i.e the $ft of the SUBSCRIBE plus i.e -1234) to test
Lewis
From: Lewis Hutchinson
Sent: 11 August 2022 14:59
To: sr-users(a)lists.kamailio.org
Subject: Remove and Re add FROM in 200 OK sl reply
Hello All
kamailio 5.5.3
KEMI Python
Lab environemnt
Is there a reason why this does not work?
Lines 2 and 3 work but the removal of the initial From is not working on Line 1
1. KSR.hdr.remove("From")
2. KSR.hdr.append_to_reply("From: "
+KSR.pv.gete("$fn") + " <"+KSR.pv.gete("$fu") +
">" + ";tag=" +KSR.pv.gete("$ft") + "--1234" +
"\r\n")
3. KSR.sl.sl_send_reply(200, "OK")
In a SUBSCRIBE/NOTIFY scenario I am trying to control the From Tag returned in the 200OK
so I can use the same one in subsequent NOTIFY messages generated outside of Kamailio, my
theory is use the From tag in the Subscribe and append it on the reply with -1234 for
example (this is only in a Lab at this stage, any other options please let me know)
Whenever I do this I end up with 2 From headers (see below)
SIP/2.0 200 OK
Via: SIP/2.0/UDP
192.168.1.67:5060;branch=z9hG4bK-f710a11a;rport=46404;received=xx.yy.xx.yy
From: " testuser" sip:limeant30@sip.viazeta.com;tag=bf8745def06c7b12
To: <sip:
testuser@sip.viazeta.com>;tag=47969b75f14e6954812863912d1cf21c.b5f3318f<mailto:testuser@sip.viazeta.com%3e;tag=47969b75f14e6954812863912d1cf21c.b5f3318f>
Call-ID: b21ba770-9b5836aa@192.168.1.67<mailto:b21ba770-9b5836aa@192.168.1.67>
CSeq: 18137 SUBSCRIBE
Contact: "testuser" <sip:testuser@
xx.yy.xx.yy:46404<sip:testuser@%20xx.yy.xx.yy:46404>>
Expires: 3600
From: "testuser" sip:testuser@testbed.com;tag=bf8745def06c7b12--1234
Content-Length: 0
I have tried many many variations but the original From header always persists I have
checked the debug logs and it says it has been removed
Anyone know what I am missing? And how to get KSR.hdr.remove("From") to work.
Looking in a debug log the header is removed.
Lewis
15 Aug
15 Aug
8:07 p.m.
Hello,
not sure I really understood what you want to do, so some generic remarks:
- From header for generated replies is taken from request. If you want
a different one, change it for request, then do msg_apply_changes() and
then generate the reply
- the To-tag set by Kamailio in generated replies should be available via:
*
https://www.kamailio.org/wikidocs/cookbooks/5.6.x/pseudovariables/#lttkey-l…
Cheers,
Daniel
On 11.08.22 17:19, Lewis Hutchinson wrote:
Apologies for the confusion I am actually trying to access to To tag
in the sl reply and fix that to what I want (i.e the $ft of the
SUBSCRIBE plus i.e –1234) to test
*Lewis *
*From:*Lewis Hutchinson
*Sent:* 11 August 2022 14:59
*To:* sr-users(a)lists.kamailio.org
*Subject:* Remove and Re add FROM in 200 OK sl reply
Hello All
kamailio 5.5.3
KEMI Python
Lab environemnt
Is there a reason why this does not work?
Lines 2 and 3 work but the removal of the initial From is not working
on Line 1
1. KSR.hdr.remove(“From”)
2. KSR.hdr.append_to_reply("From: "
+KSR.pv.gete("$fn") + " <"+KSR.pv.gete("$fu") +
">" + ";tag="
+KSR.pv.gete("$ft") + "--1234" + "\r\n")
3. KSR.sl.sl_send_reply(200, "OK")
In a SUBSCRIBE/NOTIFY scenario I am trying to control the From Tag
returned in the 200OK so I can use the same one in subsequent NOTIFY
messages generated outside of Kamailio, my theory is use the From tag
in the Subscribe and append it on the reply with –1234 for example
(this is only in a Lab at this stage, any other options please let me
know)
Whenever I do this I end up with 2 From headers (see below)
SIP/2.0 200 OK
Via: SIP/2.0/UDP
192.168.1.67:5060;branch=z9hG4bK-f710a11a;rport=46404;received=xx.yy.xx.yy
From: " testuser" sip:limeant30@sip.viazeta.com;tag=bf8745def06c7b12
To: <sip:
testuser(a)sip.viazeta.com>;tag=47969b75f14e6954812863912d1cf21c.b5f3318f
<mailto:testuser@sip.viazeta.com%3e;tag=47969b75f14e6954812863912d1cf21c.b5f3318f>
Call-ID: b21ba770-9b5836aa(a)192.168.1.67
CSeq: 18137 SUBSCRIBE
Contact: "testuser" <sip:testuser@ xx.yy.xx.yy:46404
<sip:testuser@%20xx.yy.xx.yy:46404>>
Expires: 3600
From: "testuser" sip:testuser@testbed.com;tag=bf8745def06c7b12--1234
Content-Length: 0
I have tried many many variations but the original From header always
persists I have checked the debug logs and it says it has been removed
Anyone know what I am missing? And how to get KSR.hdr.remove(“From”)
to work. Looking in a debug log the header is removed.
*Lewis*
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Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
16 Aug
16 Aug
11:03 a.m.
Hi Daniel
It was a very long day so apologies for making an already confusing question more
confusing but the answer you provided was what I was looking for.
The issue is the below:
(Handset) SUBSCRIBE ( No To-Tag / $ft From-Tag) ------> SBC ------> Kamailio
-------> API Post
Kamailio (SL 200 OK To-Tag $ltt(s) / $ft From-Tag) ------> SBC ------> (Handset)
SUBSCRIBE
NOTIFY ------> Kamailio ( To-Tag = $ft from SUBSCRIBE / $ft From-Tag is a new from tag
for the NOTIFY ) ------> SBC ------> (Handset) SUBSCRIBE
The SBC does not like the change of tag between 200OK and NOTIFY Forking but we are doing
this in accordance with the RFC 3265 around Forking
I was asking the question to able to have options for testing in a Lab Environment so I
can use the $ltt(s) provided in the 200 OK and work it into the NOTIFY coming form a 3rd
Party.
I just couldn't see if for looking despite me being in the right place, so thanks for
pointing it out
Lewis
From: Daniel-Constantin Mierla <miconda(a)gmail.com>
Sent: 15 August 2022 18:08
To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>rg>; Lewis
Hutchinson <lewis.hutchinson(a)missionlabs.co.uk>
Subject: Re: [SR-Users] Remove and Re add FROM in 200 OK sl reply
Hello,
not sure I really understood what you want to do, so some generic remarks:
- From header for generated replies is taken from request. If you want a different one,
change it for request, then do msg_apply_changes() and then generate the reply
- the To-tag set by Kamailio in generated replies should be available via:
*
https://www.kamailio.org/wikidocs/cookbooks/5.6.x/pseudovariables/#lttkey-l…
Cheers,
Daniel
On 11.08.22 17:19, Lewis Hutchinson wrote:
Apologies for the confusion I am actually trying to access to To tag in the sl reply and
fix that to what I want (i.e the $ft of the SUBSCRIBE plus i.e -1234) to test
Lewis
From: Lewis Hutchinson
Sent: 11 August 2022 14:59
To: sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>
Subject: Remove and Re add FROM in 200 OK sl reply
Hello All
kamailio 5.5.3
KEMI Python
Lab environemnt
Is there a reason why this does not work?
Lines 2 and 3 work but the removal of the initial From is not working on Line 1
1. KSR.hdr.remove("From")
2. KSR.hdr.append_to_reply("From: "
+KSR.pv.gete("$fn") + " <"+KSR.pv.gete("$fu") +
">" + ";tag=" +KSR.pv.gete("$ft") + "--1234" +
"\r\n")
3. KSR.sl.sl_send_reply(200, "OK")
In a SUBSCRIBE/NOTIFY scenario I am trying to control the From Tag returned in the 200OK
so I can use the same one in subsequent NOTIFY messages generated outside of Kamailio, my
theory is use the From tag in the Subscribe and append it on the reply with -1234 for
example (this is only in a Lab at this stage, any other options please let me know)
Whenever I do this I end up with 2 From headers (see below)
SIP/2.0 200 OK
Via: SIP/2.0/UDP
192.168.1.67:5060;branch=z9hG4bK-f710a11a;rport=46404;received=xx.yy.xx.yy
From: " testuser" sip:limeant30@sip.viazeta.com;tag=bf8745def06c7b12
To: <sip:
testuser@sip.viazeta.com>;tag=47969b75f14e6954812863912d1cf21c.b5f3318f<mailto:testuser@sip.viazeta.com%3e;tag=47969b75f14e6954812863912d1cf21c.b5f3318f>
Call-ID: b21ba770-9b5836aa@192.168.1.67<mailto:b21ba770-9b5836aa@192.168.1.67>
CSeq: 18137 SUBSCRIBE
Contact: "testuser" <sip:testuser@
xx.yy.xx.yy:46404<sip:testuser@%20xx.yy.xx.yy:46404>>
Expires: 3600
From: "testuser" sip:testuser@testbed.com;tag=bf8745def06c7b12--1234
Content-Length: 0
I have tried many many variations but the original From header always persists I have
checked the debug logs and it says it has been removed
Anyone know what I am missing? And how to get KSR.hdr.remove("From") to work.
Looking in a debug log the header is removed.
Lewis
__________________________________________________________
Kamailio - Users Mailing List - Non Commercial Discussions
* sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>
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832
days inactive
837
days old
3 comments
2 participants
participants (2)
-
Daniel-Constantin Mierla -
Lewis Hutchinson