Hello,

the usage of msg_apply_changes is not necessary (not even recommended) for append_hf (and other functions) to work. The OP was talking about a packet capture, so I assume that he got the capture after the proxy send out the message.

Cheers,

Henning

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Henning Westerholt – https://skalatan.de/blog/

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From: Unai Rodriguez via sr-users <sr-users@lists.kamailio.org>
Sent: Montag, 11. März 2024 09:33
To: Calvin E. via sr-users <sr-users@lists.kamailio.org>; Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Cc: Unai Rodriguez <unai@rodr.org>
Subject: [SR-Users] Re: append_hf not working

Using https://kamailio.org/docs/modules/stable/modules/textopsx.html#textopsx.f.msg_apply_changes might be relevant in your case...

With best wishes,

Unai Rodriguez

On 11 Mar 2024 at 09:22 +0100, Benoit Panizzon via sr-users <sr-users@lists.kamailio.org>, wrote:

Hi Calvin

I'm trying to add something simple like the following:

append_hf("X-testheader: True\r\n", "From");

However, I don't see my X-testheader in a packet capture. Are there
any common pitfalls that would prevent append_hf from working as
expected?

Weird, I use this a lot and it always works. But I never attempted to
specify the header after which it should be appended. Does it work if
you don't specifiy "From"?

Mit freundlichen Grüssen

-Benoît Panizzon-
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