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    <div class="moz-cite-prefix"><tt>Hi,<br>
        <br>
        SIP registration has nothing to do with SIP presence. There are
        totally individual mechanisms in SIP.<br>
        <br>
        In presence, when a device starts publishing for the first time,
        it gets an etag (a unique id) that will identify the
        device+publisher.<br>
        <br>
        Regards,<br>
      </tt>
      <pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
      On 10.10.2014 04:46, Yuming Zheng wrote:<br>
    </div>
    <blockquote
cite="mid:CAJ5nD-a4UEp378tB35R-SAahMWc_uxMub58qnLziEgntJTJ3Dg@mail.gmail.com"
      type="cite">
      <div dir="ltr"><br>
        <div>Yes ,<font face="monospace"><span
              style="font-size:11.818181991577148px">GRUU can solve this
              situation.</span></font></div>
        <div><font face="monospace"><span
              style="font-size:11.818181991577148px">So, is there any
              similar mechanism with presence info to only keep the
              latest presence status of the same register.</span></font></div>
        <div><font face="monospace"><span
              style="font-size:11.818181991577148px"><br>
            </span></font></div>
        <div><font face="monospace"><span
              style="font-size:11.818181991577148px">BR,</span></font></div>
        <div><font face="monospace"><span
              style="font-size:11.818181991577148px"><br>
            </span></font></div>
        <div><font face="monospace"><span
              style="font-size:11.818181991577148px">Frank.zheng</span></font></div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">2014-10-09 18:32 GMT+08:00
          Bogdan-Andrei Iancu <span dir="ltr">&lt;<a
              moz-do-not-send="true" href="mailto:bogdan@opensips.org"
              target="_blank">bogdan@opensips.org</a>&gt;</span>:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF">
              <div><tt>Hi Jayesh,<br>
                  <br>
                  Maybe you should look into GRUU stuff ;).<br>
                  <br>
                  On the TCP error - even if you set the TCP persistence
                  flag, the UAC may close the TCP conn -&gt; you end up
                  in the same situation. What you can do is to prevent
                  OpenSIPS to open TCP conns when routing to end-users -
                  the idea is to have end-users connecting to OpenSIPS
                  and not the other way around. See
                  "tcp_no_new_conn_bflag" :<br>
                      <a moz-do-not-send="true"
href="http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc96"
                    target="_blank">http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc96</a><br>
                  <br>
                  Regards,<br>
                </tt><span class="">
                  <pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a moz-do-not-send="true" href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre>
                </span>
                <div>
                  <div class="h5"> On 08.10.2014 17:31, Jayesh Nambiar
                    wrote:<br>
                  </div>
                </div>
              </div>
              <div>
                <div class="h5">
                  <blockquote type="cite">
                    <div dir="ltr">
                      <div>
                        <div>
                          <div>Hi Bogdan,<br>
                          </div>
                          So I thought of doing this and I have another
                          problem. Say if a device registered from IP
                          1.2.3.4, and then moved out to different
                          network and re-registered from IP 4.3.2.1,
                          there is a stale registration lying in
                          opensips for the same device from 1.2.3.4.<br>
                        </div>
                        Now when I use TCP as transport, opensips waits
                        till connect timed out on unreachable IPs before
                        sending the call to registered contact and the
                        following messages are logged in syslog:<br>
                        ERROR:core:tcp_blocking_connect: timeout 10 s
                        elapsed from 10 s<br>
                         ERROR:core:tcpconn_connect:
                        tcp_blocking_connect failed<br>
                         ERROR:core:tcp_send: connect failed<br>
                         ERROR:tm:msg_send: tcp_send failed<br>
                        <br>
                      </div>
                      <div>Looks like opensips tries to do a TCP connect
                        first with all registered contacts before
                        actually routing the call.<br>
                      </div>
                      <div>I do,<br>
                        modparam("registrar", "tcp_persistent_flag",
                        "TCP_PERSISTENT")<br>
                        <br>
                        if(is_method("REGISTER")) {<br>
                        setflag(TCP_PERSISTENT);<br>
                                setbflag(30);<br>
                                if(!save("location", "fc1")) {<br>
                                        t_reply("500", "Error while
                        saving AOR");<br>
                                }<br>
                        }<br>
                        <br>
                      </div>
                      <div>--- Jayesh<br>
                      </div>
                      <div><br>
                        <br>
                        <br>
                      </div>
                      <div><br>
                      </div>
                      <br>
                    </div>
                    <div class="gmail_extra"><br>
                      <div class="gmail_quote">On Wed, Oct 8, 2014 at
                        3:10 PM, Bogdan-Andrei Iancu <span dir="ltr">&lt;<a
                            moz-do-not-send="true"
                            href="mailto:bogdan@opensips.org"
                            target="_blank">bogdan@opensips.org</a>&gt;</span>
                        wrote:<br>
                        <blockquote class="gmail_quote" style="margin:0
                          0 0 .8ex;border-left:1px #ccc
                          solid;padding-left:1ex">
                          <div text="#000000" bgcolor="#FFFFFF">
                            <div><tt>Hi Jayesh,<br>
                                <br>
                                Basically you do not what to have more
                                registrations from the same IP, right ?<br>
                                <br>
                                Exactly the opposit of the
                                is_other_contact() function :<br>
                                    <a moz-do-not-send="true"
href="http://www.opensips.org/html/docs/modules/1.11.x/registrar.html#id294660"
                                  target="_blank">http://www.opensips.org/html/docs/modules/1.11.x/registrar.html#id294660</a><br>
                                <br>
                                Regards,<br>
                              </tt>
                              <pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a moz-do-not-send="true" href="http://www.opensips-solutions.com" target="_blank">http://www.opensips-solutions.com</a></pre>
                              <div>
                                <div> On 01.10.2014 18:15, Jayesh
                                  Nambiar wrote:<br>
                                </div>
                              </div>
                            </div>
                            <blockquote type="cite">
                              <div>
                                <div>
                                  <div dir="ltr">
                                    <div>
                                      <div>
                                        <div>
                                          <div>
                                            <div>Hi,<br>
                                            </div>
                                            I am trying to solve a
                                            problem of having one
                                            registration per AOR per
                                            device. So user 1234 can
                                            register from device A,
                                            device B and device C. But
                                            the user 1234 should not
                                            have multiple contacts from
                                            device A alone. <br>
                                          </div>
                                          At times when the device loses
                                          network, proxy doesn't receive
                                          de-register and the contact
                                          stays in opensips till its
                                          expiry time. So the same
                                          device is thus capable of
                                          creating multiple contacts. I
                                          could solve this by using
                                          "fc1" flag while doing a
                                          save("location") but I need
                                          multiple registrations to be
                                          allowed from different devices
                                          !!<br>
                                        </div>
                                        So is there a way where while
                                        doing a save("location"), I set
                                        some sort of device id along
                                        with it such that I identify and
                                        overwrite the existing contact
                                        only if the registration comes
                                        from same device-id or else add
                                        it up for parallel forking.<br>
                                      </div>
                                      Do let me know if I make sense
                                      here and there's a solution to
                                      this. Thanks for any suggestions
                                      and directions.<br>
                                      <br>
                                      Thanks,<br>
                                      <br>
                                    </div>
                                    --- Jayesh<br>
                                  </div>
                                  <br>
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