org.savarese.vserv.tcpip
Class ICMPEchoPacket

java.lang.Object
  org.savarese.vserv.tcpip.IPPacket
      org.savarese.vserv.tcpip.ICMPPacket
          org.savarese.vserv.tcpip.ICMPEchoPacket

public class ICMPEchoPacket

extends ICMPPacket

ICMPEchoPacket extends ICMPPacket to implement ICMP echo request and reply packets.

Author:

Daniel F. Savarese

Field Summary

static int	OFFSET_IDENTIFIER Offset into the ICMP packet of the identifier header value.
static int	OFFSET_SEQUENCE Offset into the ICMP packet of the sequence number header value.

Fields inherited from class org.savarese.vserv.tcpip.ICMPPacket

OFFSET_CODE, OFFSET_ICMP_CHECKSUM, OFFSET_TYPE, TYPE_ECHO_REPLY, TYPE_ECHO_REQUEST

Fields inherited from class org.savarese.vserv.tcpip.IPPacket

_data_, LENGTH_DESTINATION_ADDRESS, LENGTH_SOURCE_ADDRESS, OFFSET_DESTINATION_ADDRESS, OFFSET_FLAGS, OFFSET_IDENTIFICATION, OFFSET_IP_CHECKSUM, OFFSET_PROTOCOL, OFFSET_SOURCE_ADDRESS, OFFSET_TOTAL_LENGTH, OFFSET_TTL, OFFSET_TYPE_OF_SERVICE, PROTOCOL_ICMP, PROTOCOL_IP, PROTOCOL_TCP, PROTOCOL_UDP

Constructor Summary

ICMPEchoPacket(ICMPEchoPacket packet)
Creates a new ICMP echo packet that is a copy of a given packet.

ICMPEchoPacket(int size)
Creates a new ICMP echo packet of a given size.

Method Summary

int	getICMPHeaderByteLength()
int	getIdentifier()
int	getSequenceNumber()
void	setIdentifier(int id) Sets the identifier header field.
void	setSequenceNumber(int seq) Sets the sequence number.

Methods inherited from class org.savarese.vserv.tcpip.ICMPPacket

computeICMPChecksum, computeICMPChecksum, copyData, getCode, getCombinedHeaderByteLength, getICMPChecksum, getICMPDataByteLength, getICMPPacketByteLength, getType, setCode, setData, setICMPDataByteLength, setIPHeaderLength, setType

Methods inherited from class org.savarese.vserv.tcpip.IPPacket

_computeChecksum_, computeIPChecksum, computeIPChecksum, copy, getData, getDestination, getDestination, getDestinationAsInetAddress, getDestinationAsWord, getFragmentOffset, getIdentification, getIPChecksum, getIPFlags, getIPHeaderByteLength, getIPHeaderLength, getIPPacketLength, getIPVersion, getProtocol, getSource, getSource, getSourceAsInetAddress, getSourceAsWord, getTTL, getTypeOfService, setDestinationAsWord, setFragmentOffset, setIdentification, setIPFlags, setIPPacketLength, setIPVersion, setProtocol, setSourceAsWord, setTTL, setTypeOfService, size

Methods inherited from class java.lang.Object

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

Field Detail

OFFSET_IDENTIFIER

public static final int OFFSET_IDENTIFIER

Offset into the ICMP packet of the identifier header value.

See Also:

Constant Field Values

OFFSET_SEQUENCE

public static final int OFFSET_SEQUENCE

Offset into the ICMP packet of the sequence number header value.

See Also:

Constant Field Values

Constructor Detail

ICMPEchoPacket

public ICMPEchoPacket(int size)

Creates a new ICMP echo packet of a given size.

Parameters:

size - The number of bytes in the packet.

ICMPEchoPacket

public ICMPEchoPacket(ICMPEchoPacket packet)

Creates a new ICMP echo packet that is a copy of a given packet.

Parameters:

packet - The packet to replicate.

Method Detail

getICMPHeaderByteLength

public int getICMPHeaderByteLength()

Specified by:

getICMPHeaderByteLength in class ICMPPacket

Returns:

The number of bytes in the ICMP packet header.

setIdentifier

public final void setIdentifier(int id)

Sets the identifier header field.

Parameters:

id - The new identifier.

getIdentifier

public final int getIdentifier()

Returns:

The identifier header field.

setSequenceNumber

public final void setSequenceNumber(int seq)

Sets the sequence number.

Parameters:

seq - The new sequence number.

getSequenceNumber

public final int getSequenceNumber()

Returns:

The sequence number.