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    <p>Sounds like the ulimit.</p>
    <p><a class="moz-txt-link-freetext" href="http://serverfault.com/questions/508878/increase-file-ulimit-for-the-asterisk-daemon">http://serverfault.com/questions/508878/increase-file-ulimit-for-the-asterisk-daemon</a></p>
    <p><a class="moz-txt-link-freetext" href="http://forums.asterisk.org/viewtopic.php?f=1&t=74117&start=0">http://forums.asterisk.org/viewtopic.php?f=1&t=74117&start=0</a><br>
    </p>
    <div class="moz-cite-prefix">On 18.01.2017 16:47, Sadeesh
      Radhakrishnan wrote:<br>
    </div>
    <blockquote
cite="mid:CACZDAxKpe+vNOfjmTUBcO569ijJQAoJQ4X33sPxDiN525o-tgA@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hi,
        <div>we are using certified asterisk version 13.8-cert4</div>
        <div>the calls land through ARI Stasis application, </div>
        <div>it was working fine for some time and all of sudden, we got
          the following error,</div>
        <div><br>
        </div>
        <div>
          <div>[Jan 18 05:53:56] WARNING[13686]: http.c:1946
            httpd_helper_thread: Failed to set TCP_NODELAY on HTTP
            connection, getprotobyname("tcp") failed</div>
          <div>[Jan 18 05:53:56] WARNING[13686]: http.c:1947
            httpd_helper_thread: Some HTTP requests may be slow to
            respond.</div>
          <div>[Jan 18 05:53:56] ERROR[4165]: tcptls.c:722
            ast_tcptls_server_root: Accept failed: Too many open files</div>
          <div>[Jan 18 05:53:56] WARNING[13687]: http.c:1946
            httpd_helper_thread: Failed to set TCP_NODELAY on HTTP
            connection, getprotobyname("tcp") failed</div>
          <div>[Jan 18 05:53:56] WARNING[13687]: http.c:1947
            httpd_helper_thread: Some HTTP requests may be slow to
            respond.</div>
        </div>
        <div><br>
        </div>
        <div>Can somebody guide us to understand this error and overcome
          this.</div>
        <div><br>
        </div>
        <div>Regards</div>
      </div>
      <br>
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      <br>
      <pre wrap="">_______________________________________________
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</pre>
    </blockquote>
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