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<p>Hi Jeff,</p>
<p>Sending NOTIFYs is supported by using the "n" flag for the
b2b_bridge() [1] function. Just note that some mechanisms from <a
href="https://datatracker.ietf.org/doc/html/rfc3515#section-2.4.4">RFC
3515 2.4.4</a> are not implemented though, such as the ability
to terminate the subscription prematurely by unsubscribing or
refreshing the subscription.</p>
<p>[1]
<a class="moz-txt-link-freetext" href="https://opensips.org/docs/modules/3.2.x/b2b_logic.html#func_b2b_bridge">https://opensips.org/docs/modules/3.2.x/b2b_logic.html#func_b2b_bridge</a></p>
<p>Regards,</p>
<pre class="moz-signature" cols="72">--
Vlad Patrascu
OpenSIPS Core Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
<div class="moz-cite-prefix">On 24.01.2022 17:38, Jeff Pyle wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAPhW+0+oHo+DF8xfwADTEQz7CgpF58UBvk4vrzeU=GhX=55-4g@mail.gmail.com">
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<div>OpenSIPS 3.2 supports some slick in-script B2B functions,
documented <a href=" [1]
https://www.opensips.org/Documentation/Tutorials-B2BUA-3-2#toc10"
moz-do-not-send="true">here [1]</a> with an example for
handling REFER. Does this approach include support for the
subscription and the subsequent NOTIFYs required by <a
href="https://datatracker.ietf.org/doc/html/rfc3515#section-2.4.4"
moz-do-not-send="true">RFC 3515 2.4.4 [2]</a>? <br>
</div>
<div><br>
</div>
<div>I have a need to write some REFER handling functions into
an existing OpenSIPS SBC stack, and I need to send accurate
NOTIFYs back to the REFER-er. Terminating the subscription
with the first NOTIFY isn't good enough, sadly. I'm hoping
this is the right way to do it.</div>
<div><br>
</div>
<div> [1] <a
href="https://www.opensips.org/Documentation/Tutorials-B2BUA-3-2#toc10"
moz-do-not-send="true">https://www.opensips.org/Documentation/Tutorials-B2BUA-3-2#toc10</a></div>
<div> [2] <a
href="https://datatracker.ietf.org/doc/html/rfc3515#section-2.4.4"
moz-do-not-send="true">https://datatracker.ietf.org/doc/html/rfc3515#section-2.4.4</a></div>
<div><br>
</div>
<div><br>
</div>
<div>- Jeff</div>
<div><br>
</div>
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<br>
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</blockquote>
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