ost::ipv4mask(3)
NAME
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.
Detailed Description
Internet addresses used specifically as masking addresses (such as '
255.255.255.0') are held in the IPV4Mask derived object.
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> 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
- IPV4Address& ost::IPV4Mask::operator= (unsigned long addr) [inline]
- Allows assignment from the return of functions like inet_addr() or
htonl(). - Reimplemented from ost::IPV4Address.
- References ost::IPV4Address::operator=().
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
- Generated automatically by Doxygen for GNU CommonC++ from the source
code.