<div dir="ltr"><div>Great.  Is it still recommended to keep a particular OpenSIPS instance either all proxy commands or all B2B commands?  Or, do we have some flexibility to mix them since B2B commands live in the script now?</div><div><br></div><div><br></div><div>- Jeff</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jan 26, 2022 at 9:50 AM Vlad Patrascu <<a href="mailto:vladp@opensips.org">vladp@opensips.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
  
    
  
  <div>
    <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" target="_blank">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 href="https://opensips.org/docs/modules/3.2.x/b2b_logic.html#func_b2b_bridge" target="_blank">https://opensips.org/docs/modules/3.2.x/b2b_logic.html#func_b2b_bridge</a></p>
    <p>Regards,</p>
    <pre cols="72">-- 
Vlad Patrascu
OpenSIPS Core Developer
<a href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre>
    <div>On 24.01.2022 17:38, Jeff Pyle wrote:<br>
    </div>
    <blockquote type="cite">
      
      <div dir="ltr">
        <div>OpenSIPS 3.2 supports some slick in-script B2B functions,
          documented <a>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" target="_blank">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" target="_blank">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" target="_blank">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>
      </div>
      <br>
      <fieldset></fieldset>
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    </blockquote>
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