SSF.OS
Class ICMPHeader

java.lang.Object
  |
  +--SSF.OS.ProtocolMessage
        |
        +--SSF.OS.ICMPHeader

public class ICMPHeader

extends ProtocolMessage

ICMP packet Header class.

Field Summary

int	datalen
IpHeader	failedHeader
int	icmpCode
int	icmpType
int	id
int	originTimestamp These timestamps are in hundredths of seconds.
int	receiveTimestamp These timestamps are in hundredths of seconds.
int	seq
int	transmitTimestamp These timestamps are in hundredths of seconds.

Method Summary

int	bytecount() Returns the total number of bytes in this ICMP packet.
int	header_bytecount() Returns nominal size (in bytes) of the ICMP header only.
IpHeader	ipHeader()
static ICMPHeader	makeEchoRequestMessage(int id, int seq, int len, int destAddr)
static ICMPHeader	makeEchoResponseMessage(ICMPHeader request)
static ICMPHeader	makeHostUnreachableMessage(IpHeader problem)
static ICMPHeader	makePortUnreachableMessage(IpHeader problem)
static ICMPHeader	makeProtocolUnreachableMessage(IpHeader problem)
static ICMPHeader	makeTimeExceededMessage(IpHeader problem)
static ICMPHeader	makeTimestampRequestMessage(int id, int seq, int destAddr, long now)
static ICMPHeader	makeTimestampResponseMessage(ICMPHeader request, long now)
java.lang.String	toString()

Methods inherited from class SSF.OS.ProtocolMessage

carryPayload, copy, dropHeader, dropPayload, frombytes, fromVersion, payload, previous, size, tobytes, version

Methods inherited from class java.lang.Object

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

Field Detail

failedHeader

public IpHeader failedHeader

icmpType

public int icmpType

icmpCode

public int icmpCode

id

public int id

seq

public int seq

datalen

public int datalen

originTimestamp

public int originTimestamp

These timestamps are in hundredths of seconds.

receiveTimestamp

public int receiveTimestamp

These timestamps are in hundredths of seconds.

transmitTimestamp

public int transmitTimestamp

These timestamps are in hundredths of seconds.

Method Detail

makeEchoRequestMessage

public static ICMPHeader makeEchoRequestMessage(int id,
                                                int seq,
                                                int len,
                                                int destAddr)

makeEchoResponseMessage

public static ICMPHeader makeEchoResponseMessage(ICMPHeader request)

makeTimestampRequestMessage

public static ICMPHeader makeTimestampRequestMessage(int id,
                                                     int seq,
                                                     int destAddr,
                                                     long now)

makeTimestampResponseMessage

public static ICMPHeader makeTimestampResponseMessage(ICMPHeader request,
                                                      long now)

makeHostUnreachableMessage

public static ICMPHeader makeHostUnreachableMessage(IpHeader problem)

makeProtocolUnreachableMessage

public static ICMPHeader makeProtocolUnreachableMessage(IpHeader problem)

makePortUnreachableMessage

public static ICMPHeader makePortUnreachableMessage(IpHeader problem)

makeTimeExceededMessage

public static ICMPHeader makeTimeExceededMessage(IpHeader problem)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

ipHeader

public IpHeader ipHeader()

header_bytecount

public int header_bytecount()

Returns nominal size (in bytes) of the ICMP header only. Includes the size of the IP header of packet that caused the error, for DESTINATION_UNREACHABLE and TIME_EXCEEDED, plus first eight bytes of the IP packet's payload.

Overrides:

header_bytecount in class ProtocolMessage

bytecount

public int bytecount()

Returns the total number of bytes in this ICMP packet.

Overrides:

bytecount in class ProtocolMessage