protocolP2P

Class HashRequest

java.lang.Object

protocolP2P.Payload

protocolP2P.HashRequest

public class HashRequest
extends Payload

Representation of payload for hash request.

Version:

1.0

Author:

Louis Royer, Flavien Haas, JS Auge

Field Summary

Fields

Modifier and Type	Field and Description
private HashAlgorithm[]	algoList
private java.lang.String	filename
private static int	FILENAME_POSITION
private static int	FILENAME_SIZE_POSITION

Fields inherited from class protocolP2P.Payload

PAYLOAD_SIZE_POSITION, PAYLOAD_START_POSITION, requestResponseCode

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HashRequest(byte[] packet) Constructor (typically used by client) with a byte[] parameter containing the Packet received.
	HashRequest(java.lang.String filename, HashAlgorithm[] algoList) Constructor (typically used by the server) with a filename parameter.

Method Summary

Modifier and Type	Method and Description
HashAlgorithm[]	getAlgoList() AlgoList getter.
java.lang.String	getFilename() Filename getter.
protected byte[]	toPacket() Returns a byte[] containing Packet with padding.

Methods inherited from class protocolP2P.Payload

getPayloadSize, getRequestResponseCode, setPayloadSize

Methods inherited from class java.lang.Object

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

Field Detail

filename

private java.lang.String filename

algoList

private HashAlgorithm[] algoList

FILENAME_SIZE_POSITION

private static final int FILENAME_SIZE_POSITION

See Also:

Constant Field Values

FILENAME_POSITION

private static final int FILENAME_POSITION

See Also:

Constant Field Values

Constructor Detail

HashRequest

public HashRequest(java.lang.String filename,
                   HashAlgorithm[] algoList)
            throws InternalError

Constructor (typically used by the server) with a filename parameter.

Parameters:

filename - name of the file to download. Must not be empty.

algoList - List of hash algorithms used

Throws:

InternalError

HashRequest

protected HashRequest(byte[] packet)
               throws TransmissionError,
                      SizeError,
                      ProtocolError,
                      InternalError

Constructor (typically used by client) with a byte[] parameter containing the Packet received.

Parameters:

packet - the full Packet received

Throws:

SizeError

InternalError

ProtocolError

TransmissionError

Method Detail

toPacket

protected byte[] toPacket()
                   throws InternalError

Returns a byte[] containing Packet with padding. This Packet is still incomplete and should not be send directly. ProtocolP2PPacket will use this method to generate the complete Packet.

Overrides:

toPacket in class Payload

Returns:

Packet with padding

Throws:

InternalError

getAlgoList

public HashAlgorithm[] getAlgoList()

AlgoList getter.

Returns:

List of HashAlgorithms

getFilename

public java.lang.String getFilename()

Filename getter.

Returns:

filename