class InetMaskAddress

Internet Address Mask such as subnet masks. More...

Full nameost::InetMaskAddress
Definition#include <socket.h>
Inheritsost::InetAddress [public ]
List of all Methods
Annotated List
Files
Globals
Hierarchy
Index

Public Methods


Detailed Description

Internet addresses used specifically as masking addresses (such as " 255.255.255.0") are held in the InetMaskAddress derived object. The seperate class is used so that C++ type casting can automatically determine when an InetAddress 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.

 InetMaskAddress (const char *mask)

InetMaskAddress

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

Parameters:
masknull terminated ASCII mask string.

friend InetHostAddress  operator& (const InetHostAddress &addr, const InetMaskAddress &mask)

operator&

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.

Parameters:
addrhost address to be masked by subnet.
maskinetnet mask address object to mask by.

Returns: a internet host address that has been masked.

InetAddress & operator= (unsigned long addr)

operator=

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

Reimplemented from InetAddress.