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       <i><tt class="parameter">bytes_max</tt></i>
 as well.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_NOTIFY_COMPLETED</tt></b> *</td>
      <td colspan="1" rowspan="1" align="left">
       There is no more data available on the stream.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_NOTIFY_FAILURE</tt></b></td>
      <td colspan="1" rowspan="1" align="left">
       A generic error occurred on the stream, consult
       <i><tt class="parameter">message</tt></i>
 and <i><tt class="parameter">message_code</tt></i>

       for details.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_NOTIFY_AUTH_RESULT</tt></b></td>
      <td colspan="1" rowspan="1" align="left">
       Authorization has been completed (with or without success).
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_NOTIFY_SEVERITY_INFO</tt></b></td>
      <td colspan="1" rowspan="1" align="left">
       Normal, non-error related, notification.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_NOTIFY_SEVERITY_WARN</tt></b></td>
      <td colspan="1" rowspan="1" align="left">
       Non critical error condition.  Processing may continue.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_NOTIFY_SEVERITY_ERR</tt></b></td>
      <td colspan="1" rowspan="1" align="left">
       A critical error occurred.  Processing cannot continue.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_IPPROTO_ICMP</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides a ICMP socket.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_IPPROTO_IP</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides a IP socket.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_IPPROTO_RAW</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides a RAW socket.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_IPPROTO_TCP</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides a TCP socket.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_IPPROTO_UDP</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides a UDP socket.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_PF_INET</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Internet Protocol Version 4 (IPv4).
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_PF_INET6</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Internet Protocol Version 6 (IPv6).
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_PF_UNIX</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Unix system internal protocols.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_SOCK_DGRAM</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides datagrams, which are connectionless messages (UDP, for
       example).
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_SOCK_RAW</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides a raw socket, which provides access to internal network
       protocols and interfaces. Usually this type of socket is just available
       to the root user.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_SOCK_RDM</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides a RDM (Reliably-delivered messages) socket.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_SOCK_SEQPACKET</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides a sequenced packet stream socket.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_SOCK_STREAM</tt></b> +</td>
      <td colspan="1" rowspan="1" align="left">
       Provides sequenced, two-way byte streams with a transmission mechanism
       for out-of-band data (TCP, for example).
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_SHUT_RD</tt></b></td>
      <td colspan="1" rowspan="1" align="left">
       Used with <a href="function.stream-socket-shutdown.html" class="function">stream_socket_shutdown()</a> to disable
       further receptions. Added in PHP 5.2.1.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_SHUT_WR</tt></b></td>
      <td colspan="1" rowspan="1" align="left">
       Used with <a href="function.stream-socket-shutdown.html" class="function">stream_socket_shutdown()</a> to disable
       further transmissions. Added in PHP 5.2.1.
      </td>
     </tr>

     <tr valign="middle">
      <td colspan="1" rowspan="1" align="left"><b><tt>STREAM_SHUT_RDWR</tt></b></td>
      <td colspan="1" rowspan="1" align="left">
       Used with <a href="function.stream-socket-shutdown.html" class="function">stream_socket_shutdown()</a> to disable
       further receptions and transmissions. Added in PHP 5.2.1.
      </td>
     </tr>

    </tbody>
   </colgroup>

  </table>
 </p>
 <blockquote><p><b class="note">Note</b>: 
  <span class="simpara">
   The constants marked with <i>*</i> are just available since
   PHP 5.0.0.
  </span>
 </p></blockquote>
 <blockquote><p><b class="note">Note</b>: 
  <span class="simpara">
   The constants marked with <i>+</i> are available since PHP
   5.1.0 and are meant to be used with
   <a href="function.stream-socket-pair.html" class="function">stream_socket_pair()</a>. Please note that some of these
   constants might not be available in your system.
  </span>
 </p></blockquote>
</div>
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