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<font face="monospace">Hi Jason,<br>
<br>
In transactional stateful SIP, the CANCEL requests are hop by hop
- each hop in the path is generating its own CANCEL requests to
the next hop, which consumes it; there is no actual relaying of
the CANCELs. So, the replacing (which works in relaying mode only)
doesn't fit here.<br>
<br>
Even more, the RFC3261 gives a rigorous way for building the
CANCEL requests, they are to be built 100% based on the INVITE
request only (nothing more). OpenSIPS internally builds the CANCEL
in accordance to the corresponding INVITE, so you should not need
any such changes.<br>
<br>
May you detail why you think you need this FROM replacement?<br>
<br>
Regards, <br>
</font>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a>
<a class="moz-txt-link-freetext" href="https://www.siphub.com">https://www.siphub.com</a></pre>
<div class="moz-cite-prefix">On 20.12.2023 12:38, nz deals wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CALOQYivKCFZYHHxE_TxUyD4dM22BSPA6Y6h_ORzZxh9UK52t_g@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Hi,
<div>I've been attempting to modify the From header in the
CANCEL, but it seems the changes aren't taking effect. I've
also experimented with remove_hf and append_hf, but
unfortunately, these methods didn't work either. Could someone
kindly offer suggestions if I might be overlooking something?<br>
</div>
<div><br>
</div>
<div>This is in the main request route </div>
<div><br>
</div>
if (is_method("CANCEL")) {<br>
uac_replace_from("","<a
href="mailto:sip%3Atest@test.com" moz-do-not-send="true">sip:test@test.com</a>");<br>
if (t_check_trans())<br>
t_relay(8);<br>
exit;<br>
}<br>
<div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>
<div>Regards,</div>
<div>Jason</div>
</div>
</div>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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</pre>
</blockquote>
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