Domain Name Service

Domain Name Service (DNS)

Class aprDNS

Description:

The Domain Name Service (DNS) library provides a way for client applications to resolve host names into IP addresses, as well as provide additional information about the host. Typically, the addresses of one or more nameservers (systems who provide this information to clients) are configured in the client's TCP/IP stack. The aprDNS Class allows an application to query one or more nameservers directly, without depending on the configuration of the client system.

Variables
	cErr	Text description of last error
	Session	Holds the Initial Session handle value (used as the Default Session handle)
	Debug	Enable Warning and Error messages
	DebugTrace	Include Application Call trace with Warning and Errors
	LastIP	IP Address of last query in Dot Notation (ie 192.168.15.4)
	LastHostName	Host Name of last query
	nErr	Last Error number

Methods
	New()	Creates a new instance of the aprDNS Class
	Destroy()	Terminate use of the aprDNS Class

	Cancel()	Cancel the current blocking operation
	Connect()	Establish a client connection with a remote server
	DisConnect()	Disconnect from the current server
	EnumHostAliases()	Enumerate the aliases for the specified host name or address
	GetHostAddress()	Return the IP address assigned to the specified hostname
	GetHostByAddress()	Return a array of data for the specified host IP address
	GetHostByName()	Return a array of data for the specified host name
	GetHostInfo()	Return additonal information for the specified host
	GetHostName()	Return the hostname assigned to the specified IP address
	GetHostServices()	Return a list of services supported by the specified host
	GetLocalDomain()	Get the local domain name for the current session
	GetMailExchange()	Return the hostname assigned to the specified IP address
	GetRecord()	Return record data for the current host
	GetAllRecords()	Return all available record data for the current host
	GetResolverAddress()	Return address of last nameserver that resolved query
	GetServerAddress()	Return the address of the specified nameserver
	GetServerPort()	Return the port of the specified nameserver
	GetSocket()	Return the client socket handle
	RegisterServer()	Add a nameserver address to the current session
	Reset()	Reset the client
	RetryCount()	Return the number of times a query is retried
	SetLastError()	Set the last error code
	SetLocalDomain()	Set the local domain name for the current session
	TimeOut()	Return the number of seconds until an operation times out
	Trace()	Get/Set the number of seconds until an operation times out
	UnRegisterServer()	Remove a nameserver address from the current session