Package nl.sidnlabs.pcap.util

Class ICMPv4Util

java.lang.Object

nl.sidnlabs.pcap.util.ICMPv4Util

public class ICMPv4Util
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ICMP_CODE_OFFSET
static final int	ICMP_DATA_OFFSET
static final int	ICMP_ECHO_REQUEST_ID_OFFSET
static final int	ICMP_ECHO_REQUEST_PAYLOAD_OFFSET
static final int	ICMP_ECHO_REQUEST_SEQ_OFFSET
static final int	ICMP_HDR_LEN
static final int	ICMP_REST_OF_HDR_LEN
static final int	ICMP_REST_OF_HDR_OFFSET
static final int	ICMP_TYPE_OFFSET

Method Summary

Modifier and Type	Method	Description
static short	decodeCode(byte[] packetData)
static short	decodeType(byte[] packetData)
static byte[]	extractEchoRequestPayload(byte[] packetData)
static byte[]	extractPayload(byte[] packetData)
static byte[]	extractRestOfHeader(byte[] packetData)

Methods inherited from class java.lang.Object

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

Field Details

ICMP_TYPE_OFFSET

public static final int ICMP_TYPE_OFFSET

See Also:

• Constant Field Values

ICMP_CODE_OFFSET

public static final int ICMP_CODE_OFFSET

See Also:

• Constant Field Values

ICMP_REST_OF_HDR_OFFSET

public static final int ICMP_REST_OF_HDR_OFFSET

See Also:

• Constant Field Values

ICMP_REST_OF_HDR_LEN

public static final int ICMP_REST_OF_HDR_LEN

See Also:

• Constant Field Values

ICMP_DATA_OFFSET

public static final int ICMP_DATA_OFFSET

See Also:

• Constant Field Values

ICMP_HDR_LEN

public static final int ICMP_HDR_LEN

See Also:

• Constant Field Values

ICMP_ECHO_REQUEST_ID_OFFSET

public static final int ICMP_ECHO_REQUEST_ID_OFFSET

See Also:

• Constant Field Values

ICMP_ECHO_REQUEST_SEQ_OFFSET

public static final int ICMP_ECHO_REQUEST_SEQ_OFFSET

See Also:

• Constant Field Values

ICMP_ECHO_REQUEST_PAYLOAD_OFFSET

public static final int ICMP_ECHO_REQUEST_PAYLOAD_OFFSET

See Also:

• Constant Field Values

Method Details

decodeType

public static short decodeType(byte[] packetData)

decodeCode

public static short decodeCode(byte[] packetData)

extractRestOfHeader

public static byte[] extractRestOfHeader(byte[] packetData)

extractPayload

public static byte[] extractPayload(byte[] packetData)

extractEchoRequestPayload

public static byte[] extractEchoRequestPayload(byte[] packetData)