ost_IPV4Mask: Internet addresses used specifically as masking addresses (such as ' 255.255.255.0') are held in the ipv4mask derived object.

SYNOPSIS

#include <address.h>

Inherits ost::IPV4Address.

Public Member Functions

IPV4Mask (const char *mask)

Create the mask from a null terminated ASCII string such as '255.255.255.128'. IPV4Address & operator= (unsigned long addr)

Allows assignment from the return of functions like inet_addr() or htonl()

Friends

__EXPORT IPV4Host operator& (const IPV4Host &addr, const IPV4Mask &mask)

Masks are usually used to coerce host addresses into a specific router or class domain.

Additional Inherited Members

Detailed Description

Internet addresses used specifically as masking addresses (such as ' 255.255.255.0') are held in the IPV4Mask derived object.

The separate class is used so that C++ type casting can automatically determine when an IPV4Address 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.

Author:

David Sugar [email protected] Internet Address Mask such as subnet masks.

Constructor & Destructor Documentation

ost::IPV4Mask::IPV4Mask (const char *mask)

Create the mask from a null terminated ASCII string such as '255.255.255.128'.

Parameters:

mask null terminated ASCII mask string.

Member Function Documentation

\fBIPV4Address\fP& ost::IPV4Mask::operator= (unsigned longaddr)\fC [inline]\fP

Allows assignment from the return of functions like inet_addr() or htonl()

References ost::IPV4Address::operator=().

Friends And Related Function Documentation

\fB__EXPORT\fP \fBIPV4Host\fP operator& (const \fBIPV4Host\fP &addr, const \fBIPV4Mask\fP &mask)\fC [friend]\fP

Masks are usually used to coerce host addresses into a specific router or class domain. 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.

Returns:

a internet host address that has been masked.