usr.net

Class DatagramPacket

java.lang.Object

usr.net.DatagramPacket

All Implemented Interfaces:

Datagram, DatagramPatch

public class DatagramPacket
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
DatagramPacket(byte[] payload)
DatagramPacket(byte[] payload, Address addr, int port)
DatagramPacket(byte[] payload, int length)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	fromByteBuffer(java.nio.ByteBuffer b) From ByteBuffer.
byte[]	getChecksum() Get the checksum
byte	getChecksumLength() Get the checksum size
byte[]	getData() Get payload
Address	getDstAddress() Get dst address.
int	getDstPort() Get dst port.
byte	getFlags() Get the flags
byte[]	getHeader() Get header
byte	getHeaderLength() Get the header len
int	getLength() Get the length of the data, i.e.
byte[]	getPayload() Get payload
byte	getProtocol() Get the protocol
Address	getSrcAddress() Get src address.
int	getSrcPort() Get src port.
short	getTotalLength() Get the total len
int	getTTL() Get the TTL
Datagram	setDstAddress(Address addr) Set the dst address
Datagram	setDstPort(int p) Set the dst port
Datagram	setProtocol(int p) Set the protocol
Datagram	setSrcAddress(Address addr) Set the src address
Datagram	setSrcPort(int p) Set the src port
Datagram	setTTL(int ttl) Set the TTL
java.nio.ByteBuffer	toByteBuffer() To ByteBuffer.
java.lang.String	toString() To String
boolean	TTLReduce() Reduce TTL and return true if packet still valid

Methods inherited from class java.lang.Object

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

Constructor Detail

DatagramPacket

public DatagramPacket(byte[] payload)

DatagramPacket

public DatagramPacket(byte[] payload,
              int length)

DatagramPacket

public DatagramPacket(byte[] payload,
              Address addr,
              int port)

Method Detail

getLength

public int getLength()

Get the length of the data, i.e. the payload length.

Specified by:

getLength in interface Datagram

getHeaderLength

public byte getHeaderLength()

Get the header len

Specified by:

getHeaderLength in interface Datagram

getTotalLength

public short getTotalLength()

Get the total len

Specified by:

getTotalLength in interface Datagram

getChecksumLength

public byte getChecksumLength()

Get the checksum size

Specified by:

getChecksumLength in interface Datagram

getFlags

public byte getFlags()

Get the flags

Specified by:

getFlags in interface Datagram

getTTL

public int getTTL()

Get the TTL

Specified by:

getTTL in interface Datagram

setTTL

public Datagram setTTL(int ttl)

Set the TTL

Specified by:

setTTL in interface Datagram

getProtocol

public byte getProtocol()

Get the protocol

Specified by:

getProtocol in interface Datagram

setProtocol

public Datagram setProtocol(int p)

Set the protocol

Specified by:

setProtocol in interface Datagram

getSrcAddress

public Address getSrcAddress()

Get src address.

Specified by:

getSrcAddress in interface Datagram

setSrcAddress

public Datagram setSrcAddress(Address addr)

Set the src address

Specified by:

setSrcAddress in interface Datagram

getDstAddress

public Address getDstAddress()

Get dst address.

Specified by:

getDstAddress in interface Datagram

setDstAddress

public Datagram setDstAddress(Address addr)

Set the dst address

Specified by:

setDstAddress in interface Datagram

getSrcPort

public int getSrcPort()

Get src port.

Specified by:

getSrcPort in interface Datagram

setSrcPort

public Datagram setSrcPort(int p)

Set the src port

Specified by:

setSrcPort in interface Datagram

getDstPort

public int getDstPort()

Get dst port.

Specified by:

getDstPort in interface Datagram

setDstPort

public Datagram setDstPort(int p)

Set the dst port

Specified by:

setDstPort in interface Datagram

TTLReduce

public boolean TTLReduce()

Reduce TTL and return true if packet still valid

Specified by:

TTLReduce in interface Datagram

getHeader

public byte[] getHeader()

Get header

Specified by:

getHeader in interface Datagram

getPayload

public byte[] getPayload()

Get payload

Specified by:

getPayload in interface Datagram

getData

public byte[] getData()

Get payload

Specified by:

getData in interface Datagram

getChecksum

public byte[] getChecksum()

Get the checksum

Specified by:

getChecksum in interface Datagram

toByteBuffer

public java.nio.ByteBuffer toByteBuffer()

To ByteBuffer.

Specified by:

toByteBuffer in interface DatagramPatch

fromByteBuffer

public boolean fromByteBuffer(java.nio.ByteBuffer b)

From ByteBuffer.

Specified by:

fromByteBuffer in interface DatagramPatch

toString

public java.lang.String toString()

To String

Overrides:

toString in class java.lang.Object