org.xbill.DNS
Class EDNSOption

java.lang.Object
  org.xbill.DNS.EDNSOption

Direct Known Subclasses:

ClientSubnetOption, GenericEDNSOption

public abstract class EDNSOption
extends Object

DNS extension options, as described in RFC 2671. The rdata of an OPT record is defined as a list of options; this represents a single option.

Author:

Brian Wellington, Ming Zhou <mizhou@bnivideo.com>, Beaumaris Networks

Nested Class Summary

static class

EDNSOption.Code

Constructor Summary

EDNSOption(int code)
Creates an option with the given option code and data.

Method Summary

boolean	equals(Object arg) Determines if two EDNS Options are identical.
static EDNSOption	fromWire(byte[] b) Converts the wire format of an EDNS Option (including code and length) into the type-specific format.
int	getCode() Returns the EDNS Option's code.
int	hashCode() Generates a hash code based on the EDNS Option's data.
String	toString()
byte[]	toWire() Converts an EDNS Option (including code and length) into wire format.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

EDNSOption

public EDNSOption(int code)

Creates an option with the given option code and data.

Method Detail

toString

public String toString()

Overrides:

toString in class Object

getCode

public int getCode()

Returns the EDNS Option's code.

Returns:

the option code

fromWire

public static EDNSOption fromWire(byte[] b)
                           throws IOException

Converts the wire format of an EDNS Option (including code and length) into the type-specific format.

Returns:

The option, in wire format.

Throws:

IOException

toWire

public byte[] toWire()
              throws IOException

Converts an EDNS Option (including code and length) into wire format.

Returns:

The option, in wire format.

Throws:

IOException

equals

public boolean equals(Object arg)

Determines if two EDNS Options are identical.

Overrides:

equals in class Object

Parameters:

arg - The option to compare to

Returns:

true if the options are equal, false otherwise.

hashCode

public int hashCode()

Generates a hash code based on the EDNS Option's data.

Overrides:

hashCode in class Object