NAME

       ost::IPV4Address -

       The network name and address objects are all derived from a common IPV4Address base class.

SYNOPSIS

       #include <address.h>

       Inherited by ost::IPV4Broadcast, ost::IPV4Host, ost::IPV4Mask, and ost::IPV4Multicast.

   Public Member Functions
       IPV4Address (const IPV4Validator *validator=NULL)
           Create an Internet Address object with an empty (0.0.0.0) address.
       IPV4Address (struct in_addr addr, const IPV4Validator *validator=NULL)
           Convert the system internet address data type (struct in_addr) into a Common C++
           IPV4Address object.
       IPV4Address (const char *address, const IPV4Validator *validator=NULL)
           Convert a null terminated ASCII host address string (example: '127.0.0.1') or host
           address name (example: 'www.voxilla.org') directly into a Common C++ IPV4Address
           object.
       IPV4Address (const IPV4Address &rhs)
           Copy constructor.
       virtual ~IPV4Address ()
           Destructor.
       const char * getHostname (void) const
           Provide a string representation of the value (Internet Address) held in the
           IPV4Address object.
       bool isInetAddress (void) const
           May be used to verify if a given IPV4Address returned by another function contains a
           'valid' address, or '0.0.0.0' which is often used to mark 'invalid' IPV4Address
           values.
       struct in_addr getAddress (void) const
           Provide a low level system usable struct in_addr object from the contents of
           IPV4Address.
       struct in_addr getAddress (size_t i) const
           Provide a low level system usable struct in_addr object from the contents of
           IPV4Address.
       size_t getAddressCount () const
           Returns the number of internet addresses that an IPV4Address object contains.
       IPV4Address & operator= (const char *str)
       IPV4Address & operator= (struct in_addr addr)
       IPV4Address & operator= (const IPV4Address &rhs)
       IPV4Address & operator= (unsigned long addr)
           Allows assignment from the return of functions like inet_addr() or htonl()
       IPV4Address & operator= (unsigned int addr)
       bool operator! () const
       bool operator== (const IPV4Address &a) const
           Compare two internet addresses to see if they are equal (if they specify the physical
           address of the same internet host).
       bool operator!= (const IPV4Address &a) const
           Compare two internet addresses to see if they are not equal (if they each refer to
           unique and different physical ip addresses).

   Protected Member Functions
       bool setIPAddress (const char *host)
           Sets the IP address from a string representation of the numeric address, ie
           '127.0.0.1'.
       void setAddress (const char *host)
           Used to specify a host name or numeric internet address.

   Protected Attributes
       struct in_addr * ipaddr
       size_t addr_count
       char * hostname

   Static Protected Attributes
       static Mutex mutex

Detailed Description

       The network name and address objects are all derived from a common IPV4Address base class.

       Specific classes, such as IPV4Host, IPV4Mask, etc, are defined from IPV4Address entirely
       so that the manner a network address is being used can easily be documented and understood
       from the code and to avoid common errors and accidental misuse of the wrong address
       object. For example, a 'connection' to something that is declared as a 'IPV4Host' can be
       kept type-safe from a 'connection' accidently being made to something that was declared a
       'IPV4Broadcast'.

       Author:
           David Sugar dyfet@ostel.com Internet Address binary data type.

       Examples:
           tcpthread.cpp.

Constructor & Destructor Documentation

   ost::IPV4Address::IPV4Address (const IPV4Validator *validator = NULL)
       Create an Internet Address object with an empty (0.0.0.0) address.

       Parameters:
           validator optional validator function object, intended for derived classes.

   ost::IPV4Address::IPV4Address (struct in_addraddr, const IPV4Validator *validator = NULL)
       Convert the system internet address data type (struct in_addr) into a Common C++
       IPV4Address object.

       Parameters:
           addr struct of system used binary internet address.
           validator optional validator function object, intended for derived classes.

   ost::IPV4Address::IPV4Address (const char *address, const IPV4Validator *validator = NULL)
       Convert a null terminated ASCII host address string (example: '127.0.0.1') or host address
       name (example: 'www.voxilla.org') directly into a Common C++ IPV4Address object.

       Parameters:
           address null terminated C string.
           validator optional validator function object, intended for derived classes.

   ost::IPV4Address::IPV4Address (const IPV4Address &rhs)
       Copy constructor.

   virtual ost::IPV4Address::~IPV4Address () [virtual]
       Destructor.

Member Function Documentation

   struct in_addr ost::IPV4Address::getAddress (void) const
       Provide a low level system usable struct in_addr object from the contents of IPV4Address.
       This is needed for services such as bind() and connect().

       Returns:
           system binary coded internet address.

   struct in_addr ost::IPV4Address::getAddress (size_ti) const
       Provide a low level system usable struct in_addr object from the contents of IPV4Address.
       This is needed for services such as bind() and connect().

       Parameters:
           i for IPV4Addresses with multiple addresses, returns the address at this index. User
           should call getAddressCount() to determine the number of address the object contains.

       Returns:
           system binary coded internet address. If parameter i is out of range, the first
           address is returned.

   size_t ost::IPV4Address::getAddressCount () const [inline]
       Returns the number of internet addresses that an IPV4Address object contains. This usually
       only happens with IPV4Host objects where multiple IP addresses are returned for a DNS
       lookup

   const char* ost::IPV4Address::getHostname (void) const
       Provide a string representation of the value (Internet Address) held in the IPV4Address
       object.

       Returns:
           string representation of IPV4Address.

       Examples:
           tcpthread.cpp.

   bool ost::IPV4Address::isInetAddress (void) const
       May be used to verify if a given IPV4Address returned by another function contains a
       'valid' address, or '0.0.0.0' which is often used to mark 'invalid' IPV4Address values.

       Returns:
           true if address != 0.0.0.0.

   bool ost::IPV4Address::operator! () const [inline]
   bool ost::IPV4Address::operator!= (const IPV4Address &a) const
       Compare two internet addresses to see if they are not equal (if they each refer to unique
       and different physical ip addresses). This is implimented in terms of operator==

   IPV4Address& ost::IPV4Address::operator= (const char *str)
       Referenced by ost::IPV4Mask::operator=(), and ost::IPV4Host::operator=().

   IPV4Address& ost::IPV4Address::operator= (struct in_addraddr)
   IPV4Address& ost::IPV4Address::operator= (const IPV4Address &rhs)
   IPV4Address& ost::IPV4Address::operator= (unsigned longaddr)
       Allows assignment from the return of functions like inet_addr() or htonl()

   IPV4Address& ost::IPV4Address::operator= (unsigned intaddr) [inline]
   bool ost::IPV4Address::operator== (const IPV4Address &a) const
       Compare two internet addresses to see if they are equal (if they specify the physical
       address of the same internet host). If there is more than one IP address in either
       IPV4Address object, this will return true if all of the IP addresses in the smaller are in
       the larger in any order.

   void ost::IPV4Address::setAddress (const char *host) [protected]
       Used to specify a host name or numeric internet address.

       Parameters:
           host The string representation of the IP address or a hostname, , if NULL, it will
           default to INADDR_ANY

   bool ost::IPV4Address::setIPAddress (const char *host) [protected]
       Sets the IP address from a string representation of the numeric address, ie '127.0.0.1'.

       Parameters:
           host The string representation of the IP address

       Returns:
           true if successful

Member Data Documentation

   size_t ost::IPV4Address::addr_count [protected]
   char* ost::IPV4Address::hostname [mutable],  [protected]
   struct in_addr* ost::IPV4Address::ipaddr [protected]
   Mutex ost::IPV4Address::mutex [static],  [protected]

Author

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