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    <tt>Hi Hamid,<br>
      <br>
      As the ERROR says, the SIP packet came into OpenSIPS in more than
      4 chunks, making opensips to close the TCP connection (this is an
      action against potential TCP connect based attacks). For more see
      :<br>
         
      <a class="moz-txt-link-freetext" href="http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc96">http://www.opensips.org/Documentation/Script-CoreParameters-1-11#toc96</a><br>
      <br>
      (tcp_max_msg_chunks global param)<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>
    <div class="moz-cite-prefix">On 16.02.2016 15:28, Hamid Hashmi
      wrote:<br>
    </div>
    <blockquote cite="mid:BLU182-W83E0632A9A82FF9B03A1D5E0AD0@phx.gbl"
      type="cite">
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      <div dir="ltr"><font color="#2672EC">Now I am facing following
          ERROR. What can be the reason ?</font>
        <div><br>
        </div>
        <div>
          <pre style="box-sizing: border-box; overflow: auto; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 11.9px; font-stretch: normal; line-height: 1.45; padding: 16px; border-radius: 3px; word-wrap: normal; color: rgb(51, 51, 51); margin-top: 0px !important; margin-bottom: 0px !important; background-color: rgb(247, 247, 247);"><code style="box-sizing: border-box; font-family: Consolas, 'Liberation Mono', Menlo, Courier, monospace; font-size: 11.9px; padding: 0px; margin: 0px; border-radius: 3px; word-break: normal; border: 0px; display: inline; max-width: initial; overflow: initial; line-height: inherit; word-wrap: normal; background: transparent;">Feb 16 13:11:43 ec2-siplb SIPLB[30844]: NOTICE:proto_tls:verify_callback: depth = 2
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: NOTICE:proto_tls:verify_callback: preverify is good: verify return: 1
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: NOTICE:proto_tls:verify_callback: depth = 1
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: NOTICE:proto_tls:verify_callback: preverify is good: verify return: 1
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: NOTICE:proto_tls:verify_callback: depth = 0
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: NOTICE:proto_tls:verify_callback: preverify is good: verify return: 1
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: <a class="moz-txt-link-freetext" href="INFO:proto_tls:tls_accept">INFO:proto_tls:tls_accept</a>: New TLS connection from 103.255.5.39:64219 accepted
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: <a class="moz-txt-link-freetext" href="INFO:proto_tls:tls_dump_cert_info">INFO:proto_tls:tls_dump_cert_info</a>: tls_accept: client TLS certificate subject: *******
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: <a class="moz-txt-link-freetext" href="INFO:proto_tls:tls_dump_cert_info">INFO:proto_tls:tls_dump_cert_info</a>: tls_accept: local TLS server certificate subject: *******
Feb 16 13:11:43 ec2-siplb SIPLB[30844]: ERROR:proto_tls:tcp_handle_req: Made 4 read attempts but message is not complete yet - closing connection </code></pre>
        </div>
        <div><br>
        </div>
        <div><b><font face="Times New Roman" color="#5133ab" size="3"><i>Hamid
                R. Hashmi</i></font></b>
          <div><font size="2">Software Engineer - VoIP</font></div>
          <div><font style="font-size:10pt;" color="#008a17" size="2">Vopium
              A/S</font></div>
          <br>
          <br>
          <div>
            <hr id="stopSpelling">Date: Fri, 12 Feb 2016 08:03:44 +0000<br>
            Subject: Re: [OpenSIPS-Users] How to TLS ?<br>
            From: <a class="moz-txt-link-abbreviated" href="mailto:nabeelshikder@gmail.com">nabeelshikder@gmail.com</a><br>
            To: <a class="moz-txt-link-abbreviated" href="mailto:users@lists.opensips.org">users@lists.opensips.org</a>; <a class="moz-txt-link-abbreviated" href="mailto:hamid2kviii@hotmail.com">hamid2kviii@hotmail.com</a><br>
            <br>
            <p dir="ltr">Hi, </p>
            <p dir="ltr">That option is only required if you want to
              enable "Mutual (two-way) client authentication' and is not
              normally necessary when using TLS. Most of these clients
              don't seem to support two way authentication. You can have
              this option disabled:<br>
              modparam("proto_tls","require_cert", "0"). </p>
            <p dir="ltr">477 error in my experience is usually a
              temporary connection error related to  TLS, but not
              directly related to configuration. </p>
            <p dir="ltr">Nabeel</p>
            <div class="ecxgmail_quote">On 12 Feb 2016 6:45 am, "Hamid
              Hashmi" &lt;<a moz-do-not-send="true"
                href="mailto:hamid2kviii@hotmail.com">hamid2kviii@hotmail.com</a>&gt;
              wrote:<br>
              <blockquote class="ecxgmail_quote" style="border-left:1px
                #ccc solid;padding-left:1ex;">
                <div>
                  <div dir="ltr"><font color="#2672EC">Nabeel</font>
                    <div><font color="#2672EC"><br>
                      </font></div>
                    <div><font color="#2672EC">I dont know how to
                        present a certificate from client. I have tried
                        using Xoiper (Android - Free), SFLphone (Ubuntu)
                        and CsipSimple (Android) but there was no
                        options set a public key. </font></div>
                    <div><font color="#2672EC"><br>
                      </font></div>
                    <div><font color="#2672EC">Now I am using CA signed
                        certificates in opensips with disabled flags of
                        verify_cert and require_cert, having an error
                        of </font><span style="font-family:'Times New
                        Roman';font-size:12pt;"><b>477 Send failed
                          (477/TM). </b></span></div>
                    <div><br>
                      <b><font face="Times New Roman" color="#5133ab"
                          size="3"><i>Hamid R. Hashmi</i></font></b>
                      <div><font size="2">Software Engineer - VoIP</font></div>
                      <div><font style="font-size:10pt;" color="#008a17"
                          size="2">Vopium A/S</font></div>
                      <br>
                      <br>
                      <div>
                        <hr>Date: Tue, 9 Feb 2016 08:48:41 +0000<br>
                        From: <a moz-do-not-send="true"
                          href="mailto:nabeelshikder@gmail.com"
                          target="_blank">nabeelshikder@gmail.com</a><br>
                        To: <a moz-do-not-send="true"
                          href="mailto:users@lists.opensips.org"
                          target="_blank">users@lists.opensips.org</a><br>
                        Subject: Re: [OpenSIPS-Users] How to TLS ?<br>
                        <br>
                        <p dir="ltr">Hi, </p>
                        <p dir="ltr">Does the client present a client
                          certificate? If not, then with
                          modparam("proto_tls","require_cert", "1"),
                          OpenSIPS misleadingly logs:<br>
                          'failed to accept: rejected by client'.  What
                          it actually means is that the client failed to
                          present a certificate. </p>
                        <div>On 9 Feb 2016 6:06 am, "Hamid Hashmi" &lt;<a
                            moz-do-not-send="true"
                            href="mailto:hamid2kviii@hotmail.com"
                            target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:hamid2kviii@hotmail.com">hamid2kviii@hotmail.com</a></a>&gt;
                          wrote:<br>
                          <blockquote style="border-left:1px #ccc
                            solid;padding-left:1ex;">
                            <div>
                              <div dir="ltr"><font color="#2672EC">It
                                  will be a great help if you please
                                  help me in configuring TLS. I have
                                  followed <a moz-do-not-send="true"
                                    href="http://www.opensips.org/Documentation/Tutorials-TLS-2-1"
                                    target="_blank">this</a> to
                                  configure TLS but could not able to
                                  verify certificates.</font>
                                <div><font color="#2672EC"><br>
                                  </font></div>
                                <div><font color="#2672EC">its working
                                    if disable following flags</font></div>
                                <div><font color="#2672EC"><br>
                                  </font></div>
                                <div><font face="Courier New,
                                    sans-serif">modparam("proto_tls","verify_cert",
                                    "0")</font></div>
                                <div><font face="Courier New,
                                    sans-serif">modparam("proto_tls","require_cert",
                                    "0")</font></div>
                                <div><font color="#2672EC"><br>
                                  </font></div>
                                <div><font color="#2672EC">BUT
                                    not verifying certificates. Please
                                    see <a moz-do-not-send="true"
                                      href="http://pastebin.com/qmXZjSy2"
                                      target="_blank">logs</a> if
                                    enabled</font></div>
                                <div><font color="#2672EC"><br>
                                  </font></div>
                                <div><font face="Courier New,
                                    sans-serif">modparam("proto_tls","verify_cert",
                                    "1")</font></div>
                                <div><font face="Courier New,
                                    sans-serif">modparam("proto_tls","require_cert",
                                    "1")</font></div>
                                <div><font color="#2672EC"><br>
                                  </font></div>
                                <div><font color="#2672EC">then have
                                    following ERROR</font></div>
                                <div><font color="#2672EC"><br>
                                  </font></div>
                                <pre style="overflow:auto;font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:11.9px;font-stretch:normal;line-height:1.45;padding:16px;border-radius:3px;word-wrap:normal;color:rgb(51,51,51);background-color:rgb(247,247,247);"><code style="font-family:Consolas,'Liberation Mono',Menlo,Courier,monospace;font-size:11.9px;padding:0px;border-radius:3px;word-break:normal;border:0px;display:inline;max-width:initial;overflow:initial;line-height:inherit;word-wrap:normal;background:transparent;">Feb  9 05:57:14 comoyo-dev-ec2-siplb SIPLB[29867]: [<a moz-do-not-send="true" href="http://192.168.26.181:8000" target="_blank">udp:keepalive@192.168.26.181:8000</a>]: Receive request OPTIONS from local server [192.168.26.181] 
Feb  9 05:57:14 comoyo-dev-ec2-siplb SIPLB[29868]: ERROR:proto_tls:tls_accept: New TLS connection from <a moz-do-not-send="true" href="http://115.186.93.1:47015" target="_blank">115.186.93.1:47015</a> failed to accept: rejected by client
Feb  9 05:57:14 comoyo-dev-ec2-siplb SIPLB[29868]: ERROR:proto_tls:tls_read_req: failed to do pre-tls reading
Feb  9 05:57:17 comoyo-dev-ec2-siplb SIPLB[29863]: [<a moz-do-not-send="true" href="http://192.168.26.180:6080" target="_blank">tcp:siplb@192.168.26.180:6080</a>]: In LOCAL Route sending OPTIONS to 192.168.26.181 
Feb  9 05:57:17 comoyo-dev-ec2-siplb SIPLB[29863]: <a class="moz-txt-link-freetext" href="INFO:core:probe_max_sock_buff">INFO:core:probe_max_sock_buff</a>: using snd buffer of 244 kb
Feb  9 05:57:17 comoyo-dev-ec2-siplb SIPLB[29863]: <a class="moz-txt-link-freetext" href="INFO:core:init_sock_keepalive">INFO:core:init_sock_keepalive</a>: TCP keepalive enabled on socket 17 </code><span style="color:rgb(38,114,236);font-family:Calibri,sans-serif;font-size:12pt;">   </span></pre>
                                <div>Regards<br>
                                  <b><font face="Times New Roman"
                                      color="#5133ab" size="3"><i>Hamid
                                        R. Hashmi</i></font></b>
                                  <div><br>
                                  </div>
                                </div>
                              </div>
                            </div>
                            <br>
_______________________________________________<br>
                            Users mailing list<br>
                            <a moz-do-not-send="true"
                              href="mailto:Users@lists.opensips.org"
                              target="_blank">Users@lists.opensips.org</a><br>
                            <a moz-do-not-send="true"
                              href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users"
                              rel="noreferrer" target="_blank">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><br>
                            <br>
                          </blockquote>
                        </div>
                        <br>
                        _______________________________________________
                        Users mailing list
                        <a moz-do-not-send="true"
                          href="mailto:Users@lists.opensips.org"
                          target="_blank">Users@lists.opensips.org</a>
                        <a moz-do-not-send="true"
                          href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users"
                          target="_blank">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a></div>
                    </div>
                  </div>
                </div>
                <br>
                _______________________________________________<br>
                Users mailing list<br>
                <a moz-do-not-send="true"
                  href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a><br>
                <a moz-do-not-send="true"
                  href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users"
                  rel="noreferrer" target="_blank">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><br>
                <br>
              </blockquote>
            </div>
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      <pre wrap="">_______________________________________________
Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a>
<a class="moz-txt-link-freetext" href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a>
</pre>
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