Package org.kendar.sync.lib.protocol

Class Packet

java.lang.Object

org.kendar.sync.lib.protocol.Packet

public class Packet
extends Object

Represents a packet in the sync protocol. Packet structure: - Integer: length of the packet including itself - Integer: The connection id (used to parallelize the communication. Starts from 0 for the connection) - UUID: The session id (defined in the connection phase, is unique for the whole session) - Integer: packet id used when sending data in multiple blocks - char[2]: containing the type of message - byte[]: containing the zipped content of the message

Constructor Summary

Constructors

Constructor	Description
Packet()
Packet(int connectionId, UUID sessionId, int packetId, String messageType, byte[] content)	Creates a new packet with the specified parameters.

Method Summary

Modifier and Type	Method	Description
static Packet	deserialize(byte[] data)	Deserializes a packet from a byte array.
int	getConnectionId()
byte[]	getContent()
byte[]	getDecompressedContent()	Decompresses the content using ZLIB.
int	getLength()
String	getMessageType()
int	getPacketId()
UUID	getSessionId()
byte[]	serialize()	Serializes the packet to a byte array.

Methods inherited from class java.lang.Object

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

Constructor Details

Packet

public Packet()

Packet

public Packet(int connectionId,
 UUID sessionId,
 int packetId,
 String messageType,
 byte[] content)

Creates a new packet with the specified parameters.

Parameters:

connectionId - The connection ID

sessionId - The session ID

packetId - The packet ID

messageType - The message type (2 characters)

content - The content of the packet (will be compressed)

Method Details

deserialize

public static Packet deserialize(byte[] data)

Deserializes a packet from a byte array.

Parameters:

data - The serialized packet

Returns:

The deserialized packet

serialize

public byte[] serialize()

Serializes the packet to a byte array.

Returns:

The serialized packet

getDecompressedContent

public byte[] getDecompressedContent()

Decompresses the content using ZLIB.

Returns:

The decompressed content

getLength

public int getLength()

getConnectionId

public int getConnectionId()

getSessionId

public UUID getSessionId()

getPacketId

public int getPacketId()

getMessageType

public String getMessageType()

getContent

public byte[] getContent()