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<HTML>
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<title>Kernel APIs: CALL^%ZISTCP</title>
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<H3><A NAME="navskip">CALL^%ZISTCP</A>: Make TCP/IP Connection (Remote System)</H3>
<P><B>Reference Type:</B> Supported, <B>Category:</B> Device Handler,
<B>ICR#:</B> 2118</P>
<H4><A NAME="description">Description</A></H4>
<P>The CALL^%ZISTCP API is used to make a TCP/IP connection to a remote system.</P>
<P><strong>NOTE:</strong> This API is <strong>IPv6</strong> compliant.</P>
<H4><A NAME="format">Format</A></H4>
<PRE> CALL^%ZISTCP</PRE>
<P>Make sure to perform the following steps before calling this API:</P>
<OL>
<LI>
<strong>NEW</strong> all <i>non</i>-namespaced variables.
<BR>
<BR>
</LI>
<LI>
Set all input variables.
<BR>
<BR>
</LI>
<LI>
Call the API.
</LI>
</OL>
<H4><A NAME="input_parameters">Input Variables</A></H4>
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<TR>
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WIDTH="15%">
<B>IPADDRESS:</B>
</TD>
<TD VALIGN="TOP"
WIDTH="85%">
<P>(required) This is the Internet Protocol (IP) address of the Host
system to which it connects. It <em>must</em> be in either of the
following formats:</P>
<ul>
<li>
<strong>IPv4—</strong>Format of four numbers separated by dots (e.g., 99.99.9.999)
<br>
<br>
</li>
<li>
<strong>IPv6—</strong>Format of six numbers separated by colons (e.g., fe80::206a:b21b:fbd5:c93).
</li>
</ul>
</TD>
</TR>
<TR>
<TD VALIGN="TOP">
<B>SOCKET:</B>
</TD>
<TD VALIGN="TOP">
<P>(required) This is the socket to connect to on the remote host. It
is an integer from <strong>1-65535</strong>. Values below <strong>5000</strong> are reserved for standard
Internet services (e.g., SMTP mail).</P>
</TD>
</TR>
<TR>
<TD VALIGN="TOP"><B>TIMEOUT:</B>
</TD>
<TD VALIGN="TOP">
<P>(optional) This is the timeout to apply to the Open.</P>
</TD>
</TR>
</TABLE>
<H4><A NAME="output">Output Variables</A></H4>
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WIDTH="15%">
<B>IO:</B>
</TD>
<TD VALIGN="TOP"
WIDTH="85%">
<P>If the connection is made then the <strong>IO</strong> variable holds the implementation
value that is used to reference the connection.</P>
</TD>
</TR>
<TR>
<TD VALIGN="TOP"
WIDTH="15%">
<B>POP:</B>
</TD>
<TD VALIGN="TOP"
WIDTH="85%">
<P>This output variable reports the connection status:</P>
<UL>
<LI>
<strong>Successful—</strong>A value of <strong>zero</strong> (<strong>0</strong>)
means the connection was successful.
<BR>
<BR>
</LI>
<LI>
<strong>Unsuccessful—</strong>A positive value means the connection failed.
</LI>
</UL>
<P>It works the same as a call to
<A HREF="zis.html"
TITLE="^%ZIS(): Standard Device Call"
CLASS="bodylink">^%ZIS(): Standard Device Call</A>.</P>
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