Package net.i2p.data.i2np

Class TunnelDataMessage

java.lang.Object

net.i2p.data.i2np.I2NPMessageImpl

net.i2p.data.i2np.FastI2NPMessageImpl

net.i2p.data.i2np.TunnelDataMessage

All Implemented Interfaces:

I2NPMessage

public class TunnelDataMessage
extends FastI2NPMessageImpl

Defines the message sent between routers as part of the tunnel delivery The tunnel ID is changed in-place by TunnelParticipant.send(), so we can't reuse the checksum on output, but we still subclass FastI2NPMessageImpl so we don't verify the checksum on input... because this is a high-usage class.

Nested Class Summary

Nested classes/interfaces inherited from class net.i2p.data.i2np.I2NPMessageImpl

I2NPMessageImpl.Builder

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DATA_SIZE
static final int	MESSAGE_TYPE

Fields inherited from class net.i2p.data.i2np.FastI2NPMessageImpl

_checksum, _hasChecksum

Fields inherited from class net.i2p.data.i2np.I2NPMessageImpl

_context, _expiration, _log, CHECKSUM_LENGTH, DEFAULT_EXPIRATION_MS, HEADER_LENGTH

Fields inherited from interface net.i2p.data.i2np.I2NPMessage

MAX_ID_VALUE, MAX_SIZE

Constructor Summary

Constructors

Constructor	Description
TunnelDataMessage(I2PAppContext context)

Method Summary

Modifier and Type	Method	Description
protected int	calculateWrittenLength()	calculate the message body's length (not including the header and footer
boolean	equals(Object object)
byte[]	getData()
long	getTunnelId()
TunnelId	getTunnelIdObj()
int	getType()	Return the unique identifier for this type of I2NP message, as defined in the I2NP spec
int	hashCode()
void	readMessage(byte[] data, int offset, int dataSize, int type)	Read the body into the data structures, after the initial type byte and the uniqueId / expiration, using the current class's format as defined by the I2NP specification
void	setData(byte[] data)
void	setTunnelId(long id)	(correctly) Invalidates stored checksum
void	setTunnelId(TunnelId id)	(correctly) Invalidates stored checksum
byte[]	toByteArray()
String	toString()
protected int	writeMessageBody(byte[] out, int curIndex)	write the message body to the output array, starting at the given index

Methods inherited from class net.i2p.data.i2np.FastI2NPMessageImpl

readBytes, toByteArray, toByteArrayWithSavedChecksum

Methods inherited from class net.i2p.data.i2np.I2NPMessageImpl

createMessage, fromRawByteArray, fromRawByteArrayNTCP2, getMessageExpiration, getMessageSize, getRawMessageSize, getUniqueId, readBytes, readBytes, readMessage, registerBuilder, setMessageExpiration, setUniqueId, toByteArray, toRawByteArray, toRawByteArrayNTCP2, writeBytes

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

MESSAGE_TYPE

public static final int MESSAGE_TYPE

See Also:

• Constant Field Values

DATA_SIZE

public static final int DATA_SIZE

See Also:

• Constant Field Values

Constructor Details

TunnelDataMessage

public TunnelDataMessage(I2PAppContext context)

Method Details

getTunnelId

public long getTunnelId()

setTunnelId

public void setTunnelId(long id)

(correctly) Invalidates stored checksum

getTunnelIdObj

public TunnelId getTunnelIdObj()

setTunnelId

public void setTunnelId(TunnelId id)

(correctly) Invalidates stored checksum

getData

public byte[] getData()

setData

public void setData(byte[] data)

Throws:

IllegalStateException - if data previously set, to protect saved checksum

readMessage

public void readMessage(byte[] data,
 int offset,
 int dataSize,
 int type)
                 throws I2NPMessageException

Description copied from interface: I2NPMessage

Read the body into the data structures, after the initial type byte and the uniqueId / expiration, using the current class's format as defined by the I2NP specification

Parameters:

data - data to read from

offset - where to start in the data array

dataSize - how long into the data to read

type - I2NP message type

Throws:

I2NPMessageException - if the stream doesn't contain a valid message that this class can read.

calculateWrittenLength

protected int calculateWrittenLength()

calculate the message body's length (not including the header and footer

Specified by:

calculateWrittenLength in class I2NPMessageImpl

writeMessageBody

protected int writeMessageBody(byte[] out,
 int curIndex)
                        throws I2NPMessageException

write the message body to the output array, starting at the given index

Specified by:

writeMessageBody in class I2NPMessageImpl

Returns:

the index into the array after the last byte written (NOT the length)

Throws:

I2NPMessageException

getType

public int getType()

Description copied from interface: I2NPMessage

Return the unique identifier for this type of I2NP message, as defined in the I2NP spec

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object object)

Overrides:

equals in class Object

toByteArray

public byte[] toByteArray()

Specified by:

toByteArray in interface I2NPMessage

Overrides:

toByteArray in class I2NPMessageImpl

toString

public String toString()

Overrides:

toString in class Object