mail.communication.inet
Class UDP

java.lang.Object
  mail.communication.inet.UDP

public class UDP
extends java.lang.Object

Nested Class Summary

static class

UDP.UDPException

Field Summary

(package private) int	anz
(package private) java.util.HashSet<java.lang.Integer>	arrive
static int	CPACKAGE The UDP packet contains a CPackage -> there may be more packages following
static int	CPACKAGE_HEADER
(package private) long	creation
(package private) byte[]	data
static int	DISCARD_TIME the time after which missing UDP-packets are considered lost
static int	ECHO content for PING : ECHO package received
static int	HOLE_PUNCH_REQUEST The UDP packet is a hole punch request
(package private) byte[]	id
static int	IP_REQUEST content for PING : want to know my IP
static int	IPv4 the used IP-Address is of type IPv4
static int	IPv6 the used IP-Address is of type IPv6
static int	NO_REPLY content for PING : no package received
static int	PING The UDP packet is a ping OR: content for PING : PING package received
(package private) int	port
static int	PUNCH_HOLE The UDP packet is a command to punch a UDP hole
static int	PUNCH_PERFORMED content for PING : punch was performed
static int	PUNCH_REJECTED content for PING : punch will not be performed
private static java.util.Random	random
static int	REQUEST_FAILED content for PING : punch request failed to have any effect
static int	REQUEST_PERFORMED content for PING : punch request will be performed
(package private) java.net.InetAddress	sender
static int	SPLIT_SIZE the max. size in bytes of created UDP-Packets
(package private) int	type
static int	UNSUPPORTED Reply to an unsupported package type
static int	YOUR_IP The UDP packet is the answer to an IP request

Constructor Summary

UDP(java.net.DatagramPacket dp)

Method Summary

void	add(java.net.DatagramPacket dp)
static java.net.DatagramPacket[]	build(byte[] out, InetAddress address) split a given byte[] into DatagramPackets
static java.net.DatagramPacket	build(int type, InetAddress address, InetAddress action)
boolean	finished()
InetAddress	getActionAddress()
java.io.InputStream	getInput()
int	getResponse()
InetAddress	getSender()
int	getType()
static java.net.DatagramPacket	ping(int echo, InetAddress address) sends a ping, or answers a ping.
boolean	tooOld()
java.lang.String	toString()
static java.net.DatagramPacket	unsupported(UDP unsupported)
boolean	useable(java.net.DatagramPacket dp)

Methods inherited from class java.lang.Object

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

Field Detail

SPLIT_SIZE

public static final int SPLIT_SIZE

the max. size in bytes of created UDP-Packets

See Also:

Constant Field Values

CPACKAGE_HEADER

public static final int CPACKAGE_HEADER

See Also:

Constant Field Values

UNSUPPORTED

public static final int UNSUPPORTED

Reply to an unsupported package type

See Also:

Constant Field Values

CPACKAGE

public static final int CPACKAGE

The UDP packet contains a CPackage -> there may be more packages following

See Also:

Constant Field Values

PING

public static final int PING

The UDP packet is a ping OR: content for PING : PING package received

See Also:

Constant Field Values

HOLE_PUNCH_REQUEST

public static final int HOLE_PUNCH_REQUEST

The UDP packet is a hole punch request

See Also:

Constant Field Values

PUNCH_HOLE

public static final int PUNCH_HOLE

The UDP packet is a command to punch a UDP hole

See Also:

Constant Field Values

YOUR_IP

public static final int YOUR_IP

The UDP packet is the answer to an IP request

See Also:

Constant Field Values

IPv4

public static final int IPv4

the used IP-Address is of type IPv4

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Constant Field Values

IPv6

public static final int IPv6

the used IP-Address is of type IPv6

See Also:

Constant Field Values

NO_REPLY

public static final int NO_REPLY

content for PING : no package received

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Constant Field Values

ECHO

public static final int ECHO

content for PING : ECHO package received

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Constant Field Values

PUNCH_PERFORMED

public static final int PUNCH_PERFORMED

content for PING : punch was performed

See Also:

Constant Field Values

PUNCH_REJECTED

public static final int PUNCH_REJECTED

content for PING : punch will not be performed

See Also:

Constant Field Values

REQUEST_PERFORMED

public static final int REQUEST_PERFORMED

content for PING : punch request will be performed

See Also:

Constant Field Values

REQUEST_FAILED

public static final int REQUEST_FAILED

content for PING : punch request failed to have any effect

See Also:

Constant Field Values

IP_REQUEST

public static final int IP_REQUEST

content for PING : want to know my IP

See Also:

Constant Field Values

DISCARD_TIME

public static final int DISCARD_TIME

the time after which missing UDP-packets are considered lost

See Also:

Constant Field Values

random

private static final java.util.Random random

type

int type

data

byte[] data

sender

java.net.InetAddress sender

port

int port

creation

long creation

id

byte[] id

anz

int anz

arrive

java.util.HashSet<java.lang.Integer> arrive

Constructor Detail

UDP

public UDP(java.net.DatagramPacket dp)

Method Detail

build

public static java.net.DatagramPacket[] build(byte[] out,
                                              InetAddress address)

split a given byte[] into DatagramPackets

Parameters:

out - the byte[] to split

address - the address to encode into the DatagramPacketS

Returns:

the created DatagramPacketS

ping

public static java.net.DatagramPacket ping(int echo,
                                           InetAddress address)

sends a ping, or answers a ping.

Parameters:

echo - either ECHO or PING, use ECHO as response for PING + Responses for UDP-Hole-Punching

address -

Returns:

build

public static java.net.DatagramPacket build(int type,
                                            InetAddress address,
                                            InetAddress action)
                                     throws UDP.UDPException

Throws:

UDP.UDPException

unsupported

public static java.net.DatagramPacket unsupported(UDP unsupported)

tooOld

public boolean tooOld()

add

public void add(java.net.DatagramPacket dp)
         throws UDP.UDPException

Throws:

UDP.UDPException

useable

public boolean useable(java.net.DatagramPacket dp)

finished

public boolean finished()

getInput

public java.io.InputStream getInput()
                             throws UDP.UDPException

Throws:

UDP.UDPException

getType

public int getType()

getSender

public InetAddress getSender()

getActionAddress

public InetAddress getActionAddress()
                             throws UDP.UDPException

Throws:

UDP.UDPException

getResponse

public int getResponse()
                throws UDP.UDPException

Throws:

UDP.UDPException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object