protocolP2P

Class LoadRequest

java.lang.Object

protocolP2P.Payload

protocolP2P.LoadRequest

public class LoadRequest
extends Payload

Representation of payload for load request.

Version:

1.0

Author:

Louis Royer, Flavien Haas, JS Auge

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	filename
private static int	FILENAME_POSITION
private static int	FILENAME_SIZE_POSITION
private HostItem	hostItem
private static int	MAX_SIZE_PARTIAL_CONTENT_POSITION
private long	maxSizePartialContent
private long	offset
private static int	OFFSET_POSITION

Fields inherited from class protocolP2P.Payload

PAYLOAD_SIZE_POSITION, PAYLOAD_START_POSITION, requestResponseCode

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LoadRequest(byte[] packet) Constructor (typically used by server) with a byte[] parameter containing the Packet received.
	LoadRequest(java.lang.String filename, long offset, long maxSizePartialContent, HostItem hostItem) Constructor (typically used by the client) with a filename parameter.

Method Summary

Modifier and Type	Method and Description
java.lang.String	getFilename() filename getter.
HostItem	getHostItem() hostItem getter.
long	getMaxSizePartialContent() maxSizePartialContent getter.
long	getOffset() offset 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

maxSizePartialContent

private long maxSizePartialContent

offset

private long offset

hostItem

private HostItem hostItem

OFFSET_POSITION

private static final int OFFSET_POSITION

See Also:

Constant Field Values

MAX_SIZE_PARTIAL_CONTENT_POSITION

private static final int MAX_SIZE_PARTIAL_CONTENT_POSITION

See Also:

Constant Field Values

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

LoadRequest

public LoadRequest(java.lang.String filename,
                   long offset,
                   long maxSizePartialContent,
                   HostItem hostItem)
            throws InternalError

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

Parameters:

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

offset - offset of the bloc

maxSizePartialContent - partial content in response should not excess this size, but this can be less (by example if endoffile is reached or server doesn't have the full block requested)

hostItem - hostItem used by the client to register on the tracker

Throws:

InternalError

LoadRequest

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

Constructor (typically used by server) 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

getFilename

public java.lang.String getFilename()

filename getter.

Returns:

filename

getOffset

public long getOffset()

offset getter.

Returns:

offset

getMaxSizePartialContent

public long getMaxSizePartialContent()

maxSizePartialContent getter.

Returns:

maxSizePartialContent

getHostItem

public HostItem getHostItem()

hostItem getter.

Returns:

hostItem