man ost_IPV4Mask (Fonctions bibliothèques) - Internet addresses used specifically as masking addresses (such as ' 255.255.255.0') are held in the IPV4Mask derived object.Internet Address Mask such as subnet masks.

NAME

ost::IPV4Mask - Internet addresses used specifically as masking addresses (such as ' 255.255.255.0') are held in the IPV4Mask derived object.Internet Address Mask such as subnet masks.

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.

Detailed Description

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

The seperate 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 <dyfet@ostel.com>

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

IPV4Address& ost::IPV4Mask::operator= (unsigned long addr) [inline]

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

Reimplemented from ost::IPV4Address.

Friends And Related Function Documentation

__EXPORT IPV4Host operator & (const IPV4Host & addr, const IPV4Mask & mask) [friend]

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.

Parameters: addr host address to be masked by subnet.

mask inetnet mask address object to mask by.

Author

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