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<hr><h1>InetMaskAddress Class Reference</h1>Internet addresses used specifically as masking addresses (such as " 255.255.255.0") are held in the InetMaskAddress derived object. Internet Address Mask such as subnet masks.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="socket_h-source.html">socket.h</a>></code>
<p>
<p>Inheritance diagram for InetMaskAddress:
<p><center><img src="class_inetmaskaddress.gif" usemap="#InetMaskAddress_map" border="0"></center>
<map name="InetMaskAddress_map">
<area href="class_inetaddress.html" alt="InetAddress" shape="rect" coords="0,0,109,24">
</map>
<a href="class_inetmaskaddress-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td colspan=2><br><h2>Public Methods</h2></td></tr>
<tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="class_inetmaskaddress.html#a0">InetMaskAddress</a> (const char *mask)</td></tr>
<tr><td> </td><td><font size=-1><em>Create the mask from a null terminated ASCII string such as "255.255.255.128".</em> <a href="#a0">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="class_inetaddress.html">InetAddress</a>& </td><td valign=bottom><a class="el" href="class_inetmaskaddress.html#a1">operator=</a> (unsigned long addr)</td></tr>
<tr><td> </td><td><font size=-1><em>Allows assignment from the return of functions like inet_addr() or htonl().</em></font><br><br></td></tr>
<tr><td colspan=2><br><h2>Friends</h2></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="class_inethostaddress.html">InetHostAddress</a> </td><td valign=bottom><a class="el" href="class_inetmaskaddress.html#l0">operator &</a> (const <a class="el" href="class_inethostaddress.html">InetHostAddress</a> &addr, const InetMaskAddress &mask)</td></tr>
<tr><td> </td><td><font size=-1><em>Masks are usually used to coerce host addresses into a specific router or class domain.</em> <a href="#l0">More...</a><em></em></font><br><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
Internet addresses used specifically as masking addresses (such as " 255.255.255.0") are held in the InetMaskAddress derived object. Internet Address Mask such as subnet masks.
<p>
The seperate class is used so that C++ type casting can automatically determine when an <a class="el" href="class_inetaddress.html">InetAddress</a> object is really a mask address object rather than simply using the base class. This also allows manipulative operators for address masking to operate only when presented with a Masked address as well as providing cleaner and safer source.
<p>
<dl compact><dt>
<b>Author(s): </b><dd>
David Sugar <<a href="mailto:dyfet@ostel.com">dyfet@ostel.com</a>> </dl>
<p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a name="a0" doxytag="InetMaskAddress::InetMaskAddress"></a><p>
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<td nowrap valign="top"><b>
InetMaskAddress::InetMaskAddress (
</b></td>
<td valign="bottom"><b>
const char * <em>mask</em> )
</b></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Create the mask from a null terminated ASCII string such as "255.255.255.128".
<p>
<dl compact><dt>
<b>Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>mask</em>
</td><td>
null terminated ASCII mask string. </td></tr>
</table>
</dl> </td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a name="a1" doxytag="InetMaskAddress::operator="></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
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<td nowrap valign="top"><b>
<a class="el" href="class_inetaddress.html">InetAddress</a> & InetMaskAddress::operator= (
</b></td>
<td valign="bottom"><b>
unsigned long <em>addr</em> )<code> [inline]</code>
</b></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Allows assignment from the return of functions like inet_addr() or htonl().
<p>
<p>
Reimplemented from <a class="el" href="class_inetaddress.html#a13">InetAddress</a>. </td>
</tr>
</table>
<hr><h2>Friends And Related Function Documentation</h2>
<a name="l0" doxytag="InetMaskAddress::operator &"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
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<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
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<td nowrap valign="top"><b>
<a class="el" href="class_inethostaddress.html">InetHostAddress</a> operator & (
</b></td>
<td valign="bottom"><b>
const <a class="el" href="class_inethostaddress.html">InetHostAddress</a> & <em>addr</em>,
</b></td>
</tr>
<tr>
<td></td>
<td><b>
const InetMaskAddress & <em>mask</em> )<code> [friend]</code>
</b></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Masks are usually used to coerce host addresses into a specific router or class domain.
<p>
This can be done by taking the Inet Host Address object and "and"ing it with an address mask. This operation can be directly expressed in C++ through the & operator.
<p>
<dl compact><dt>
<b>Returns: </b><dd>
a internet host address that has been masked. </dl><dl compact><dt>
<b>Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>addr</em>
</td><td>
host address to be masked by subnet. </td></tr>
<tr><td valign=top><em>mask</em>
</td><td>
inetnet mask address object to mask by. </td></tr>
</table>
</dl> </td>
</tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="socket_h-source.html">socket.h</a></ul>
<hr><address><small>Generated at Thu Oct 4 15:33:00 2001 for CommonC++ by
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