Hi,
Take a look at this
https://blog.opensips.org/2016/11/15/cancel-request-and-reason-header/
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
https://www.opensips-solutions.com
https://www.siphub.com
On 14.08.2024 06:46, Mohamed OUALLA wrote:
Hello everyone,
I am currently working with OpenSIPs in stateful mode, and I am
encountering an issue with relaying a CANCEL request to cancel a
pending initial SIP INVITE.
The CANCEL request is hop-by-hop, so OpenSIPs act on it first
"*/send 200 canceling/*" then it generates a CANCEL SIP Request and
relay it to the next hop. My goal is to add a custom SIP header,
specifically "*X-Reason*", to this relayed CANCEL request.
Unfortunately, I am only able to add the standard "*Reason*" header.
The challenge I am facing is that FreeSWITCH, which receives the
relayed CANCEL request, removes the "Reason" header due to a parameter
I have set to disable adding Q.850 reasons. This parameter was
initially enabled to prevent FreeSWITCH from adding the "Reason"
header to negative SIP responses, but it's now also affecting the
CANCEL request, leading to the removal of the "Reason" header!
Here’s my current OpenSIPs configuration that successfully adds the
"Reason" header to the CANCEL request:
```
if(!is_present_hf("Reason")){
append_hf("Reason: Q.850;cause=32\r\n", "CSeq"); #the outgoing
CANCEL request has the Reason header value now
}
```
However, when I try to add headers like "*X-Reason*" or
"*TestHeader*" for example, they don't seem to be included in the
relayed CANCEL request:
```
if(!is_present_hf("Reason")){
append_hf("X-Reason: Q.850;cause=31\r\n", "CSeq"); # No changes
are reflected in the relayed CANCEL request :-/
# or
append_hf("TestHeader: Q.850;cause=31\r\n", "CSeq");# No changes
are reflected in the relayed CANCEL request :-/
}
```
Has anyone faced a similar issue or have any suggestions on how I
can successfully add a custom "*X-Reason*" header or any other custom
"*/X-Header/*" to the relayed CANCEL request?
Thanks in advance,
Have a beautiful day
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