org.nhindirect.dns
Class DNSResponder

java.lang.Object
  org.nhindirect.dns.DNSResponder

Direct Known Subclasses:

DNSResponderTCP, DNSResponderUDP

public abstract class DNSResponder
extends Object

Abstract DNSResponder for DNS requests. It implements common methods for calling the DNS store and handling error conditions. Protocol specific (UDP, TCP, etc) messaging handling is implemented in concrete implementations.

Since:

1.0

Author:

Greg Meyer

Constructor Summary

DNSResponder(DNSServerSettings settings, DNSStore store)
Creates a DNS responder using the provided settings and DNS store.

Method Summary

org.xbill.DNS.Message	processRequest(byte[] rawMessage) Processes a DNS request and returns a DNS response.
org.xbill.DNS.Message	processRequest(org.xbill.DNS.Message request) Processes a DNS request and returns a DNS response.
abstract void	start() Starts the responder.
abstract void	stop() Stops the responder.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DNSResponder

public DNSResponder(DNSServerSettings settings,
                    DNSStore store)
             throws DNSException

Creates a DNS responder using the provided settings and DNS store. The responder will not handle requests until start() is called.

Parameters:

settings - The DNS server settings.

store - The DNS store that holds the DNS record information.

Throws:

DNSException

Method Detail

start

public abstract void start()
                    throws DNSException

Starts the responder. Concrete implementation bind their protocol specific handlers and start accepting DNS requests.

Throws:

DNSException

stop

public abstract void stop()
                   throws DNSException

Stops the responder. The responder will not londer accept DNS requests after stop has been called.

Throws:

DNSException

processRequest

public org.xbill.DNS.Message processRequest(byte[] rawMessage)
                                     throws DNSException

Processes a DNS request and returns a DNS response. The request is in raw DNS wire protocol format.

Parameters:

rawMessage - The raw DNS wire protocol format of the request.

Returns:

A response to the DNS request.

Throws:

DNSException

processRequest

public org.xbill.DNS.Message processRequest(org.xbill.DNS.Message request)

Processes a DNS request and returns a DNS response.

Parameters:

request - The DNS request message.

Returns:

A response to the DNS request.