Package org.opennms.protocols.icmp

Class AddressMaskReply

java.lang.Object

org.opennms.protocols.icmp.ICMPHeader

org.opennms.protocols.icmp.AddressMaskReply

public final class AddressMaskReply
extends ICMPHeader

This is the implementation of an ICMP Address Mask Reply object. The object can be stored in a buffer to send or loaded from a received buffer. The class is marked final since it is not intended to be extended.

Author:

Brian Weaver

Field Summary

Fields inherited from class org.opennms.protocols.icmp.ICMPHeader

CODE_BAD_IP_HEADER, CODE_COMMUNICATIONS_ADMIN_PROHIBITIED, CODE_DESTINATION_HOST_ADMIN_PROHIBITED, CODE_DESTINATION_HOST_UNKNOWN, CODE_DESTINATION_NETWORK_ADMIN_PROHIBITED, CODE_DESTINATION_NETWORK_UNKNOWN, CODE_FRAGMENTATION_NEEDED, CODE_HOST_PRECEDENCE_VIOLATION, CODE_HOST_UNREACHABLE, CODE_HOST_UNREACHABLE_FOR_TOS, CODE_NETWORK_UNREACHABLE, CODE_NETWORK_UNREACHABLE_FOR_TOS, CODE_PORT_UNREACHABLE, CODE_PRECEDENCE_CUTOFF_IN_EFFECT, CODE_PROTOCOL_UNREACHABLE, CODE_REDIRECT_FOR_HOST, CODE_REDIRECT_FOR_NETWORK, CODE_REDIRECT_FOR_TYPE_OF_SERVICE_AND_HOST, CODE_REDIRECT_FOR_TYPE_OF_SERVICE_AND_NETWORK, CODE_REQUIRED_OPTION_MISSING, CODE_SOURCE_HOST_ISOLATED, CODE_SOURCE_ROUTE_FAILED, CODE_TTL_EQ_ZERO_IN_REASSEMBLY, CODE_TTL_EQ_ZERO_IN_TRANSIT, TYPE_ADDRESS_MASK_REPLY, TYPE_ADDRESS_MASK_REQUEST, TYPE_DESTINATION_UNREACHABLE, TYPE_ECHO_REPLY, TYPE_ECHO_REQUEST, TYPE_INFORMATION_REPLY, TYPE_INFORMATION_REQUEST, TYPE_PARAMETER_PROBLEM, TYPE_REDIRECT, TYPE_ROUTER_ADVERTISEMENT, TYPE_ROUTER_SOLICITATION, TYPE_SOURCE_QUENCH, TYPE_TIME_EXCEEDED, TYPE_TIMESTAMP_REPLY, TYPE_TIMESTAMP_REQUEST

Constructor Summary

Constructors

Constructor	Description
AddressMaskReply()	Creates a new ICMP Address Mask Request object.
AddressMaskReply(byte[] buf, int offset)	Creates a new ICMP Address mask reply from the spcified data at the specific offset.

Method Summary

Modifier and Type	Method	Description
final void	computeChecksum()	Computes the ones compliment 16-bit checksum for the ICMP message.
final int	getAddressMask()	Used to get the IPv4 32-bit address mask.
final int	loadFromBuffer(byte[] buf, int offset)	Reads the ICMP Address Mask Reqeust from the specified buffer and sets the internal fields equal to the data.
final void	setAddressMask(int mask)	Used to set the IPv4 32-bit address mask.
final int	storeToBuffer(byte[] buf, int offset)	Writes the ICMP address mask reply out to the specified buffer at the starting offset.
final byte[]	toBytes()	Converts the object to a stream of bytes.

Methods inherited from class org.opennms.protocols.icmp.ICMPHeader

byteToInt, byteToShort, computeChecksum, getChecksum, getCode, getHeaderSize, getIdentity, getNetworkSize, getSequenceId, getType, isEchoReply, isEchoRequest, nextSequenceId, setChecksum, setCode, setIdentity, setNextSequenceId, setSequenceId, setType

Methods inherited from class java.lang.Object

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

Constructor Details

AddressMaskReply

public AddressMaskReply()

Creates a new ICMP Address Mask Request object.

AddressMaskReply

public AddressMaskReply(byte[] buf,
 int offset)

Creates a new ICMP Address mask reply from the spcified data at the specific offset.

Parameters:

buf - The buffer containing the data.

offset - The start of the icmp data.

Throws:

IndexOutOfBoundsException - Thrown if there is not sufficent data in the buffer.

IllegalArgumentException - Thrown if the ICMP type is not an Address Mask reply.

Method Details

computeChecksum

public final void computeChecksum()

Computes the ones compliment 16-bit checksum for the ICMP message.

Overrides:

computeChecksum in class ICMPHeader

storeToBuffer

public final int storeToBuffer(byte[] buf,
 int offset)

Writes the ICMP address mask reply out to the specified buffer at the starting offset. If the buffer does not have sufficent data to store the information then an IndexOutOfBoundsException is thrown.

Overrides:

storeToBuffer in class ICMPHeader

Parameters:

buf - The storage buffer.

offset - The location to start in buf.

Returns:

The new offset after storing to the buffer.

Throws:

IndexOutOfBoundsException - Thrown if the buffer does not have enough storage space.

loadFromBuffer

public final int loadFromBuffer(byte[] buf,
 int offset)

Reads the ICMP Address Mask Reqeust from the specified buffer and sets the internal fields equal to the data. If the buffer does not have sufficent data to restore the header then an IndexOutOfBoundsException is thrown by the method. If the buffer does not contain an address mask reqeust then an IllegalArgumentException is thrown.

Overrides:

loadFromBuffer in class ICMPHeader

Parameters:

buf - The buffer to read the data from.

offset - The offset to start reading data.

Returns:

The new offset after reading the data.

Throws:

IndexOutOfBoundsException - Thrown if there is not sufficent data in the buffer.

IllegalArgumentException - Thrown if the ICMP type is not an Address Mask reply.

getAddressMask

public final int getAddressMask()

Used to get the IPv4 32-bit address mask.

setAddressMask

public final void setAddressMask(int mask)

Used to set the IPv4 32-bit address mask.

toBytes

public final byte[] toBytes()

Converts the object to a stream of bytes.

Overrides:

toBytes in class ICMPHeader