me.edwards.des.net.packet
Class Packet

java.lang.Object
  me.edwards.des.net.packet.Packet

Direct Known Subclasses:

PacketAddr, PacketBallot, PacketBlock, PacketGetAddr, PacketGetBlocks, PacketGetData, PacketInv, PacketNotFound, PacketPing, PacketPong, PacketVerack, PacketVersion

public abstract class Packet
extends java.lang.Object

Handles packaging and unpackaging of Packets sent between Nodes in the DES system.

Created on: Oct 17, 2015 at 9:08:41 AM

Author:

Matthew Edwards

Nested Class Summary

static class

Packet.PacketTypes Enumerates all the types of Packets and their ID's. Created on: Jan 4, 2015 at 10:50:45 AM

Field Summary

private static java.lang.String	CHARS
private static char[]	HEX
private byte	id
private static int	total Value used to automatically assign unique integer ID's to Packet Types.

Constructor Summary

Packet(byte id)
Initializes a new Packet using an ID defined in Packet.PacketTypes.

Method Summary

abstract byte[]	getBinary() Returns the binary payload of this Packet as a byte array.
byte	getID() Returns this Packet's ID.
static Packet.PacketTypes	lookup(byte id) Returns the Packet Type from a numeric Type ID.
static java.lang.String	toHex(byte b) Returns a byte as a 2-digit hexadecimal String
java.lang.String	toString()
static java.lang.String	toString(byte[] data) Returns the String representation of a Packet's binary data.

Methods inherited from class java.lang.Object

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

Field Detail

HEX

private static final char[] HEX

CHARS

private static final java.lang.String CHARS

See Also:

Constant Field Values

id

private byte id

total

private static int total

Value used to automatically assign unique integer ID's to Packet Types.

Constructor Detail

Packet

public Packet(byte id)

Initializes a new Packet using an ID defined in Packet.PacketTypes.

Parameters:

id - ID of Packet

Method Detail

getID

public byte getID()

Returns this Packet's ID.

Returns:

Packet Type ID

See Also:

Packet.PacketTypes

getBinary

public abstract byte[] getBinary()

Returns the binary payload of this Packet as a byte array.

Returns:

Binary payload as a byte array

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toString

public static java.lang.String toString(byte[] data)

Returns the String representation of a Packet's binary data.

Parameters:

data - Packet binary payload as byte array

Returns:

String representation of binary payload (Byte dump)

toHex

public static java.lang.String toHex(byte b)

Returns a byte as a 2-digit hexadecimal String

Parameters:

b - Byte to convert

Returns:

2-digit hexadecimal String representation of converted byte

lookup

public static Packet.PacketTypes lookup(byte id)

Returns the Packet Type from a numeric Type ID.

Parameters:

id - Packet Type ID

Returns:

PacketTypes object corresponding to the Packet Type ID. If the ID can not be found, the Invalid Packet Type is returned