net.tomp2p.message
Class MessageCodec

java.lang.Object
  net.tomp2p.message.MessageCodec

public class MessageCodec
extends Object

Field Summary

static byte[]	EMPTY_BYTE_ARRAY
static int	HEADER_SIZE
static int	MAX_BYTE

Constructor Summary

MessageCodec()

Method Summary

static Data	createData(byte[] me, int offset, int length, int ttl, boolean protectedEntry, PeerAddress originator)
static Data	decodeData(DataInput buffer, Message message)
static Message	decodeHeader(org.jboss.netty.buffer.ChannelBuffer buffer, InetAddress sender) Decode a message header from a Netty buffer
static void	decodePayload(Message.Content content, org.jboss.netty.buffer.ChannelBuffer buffer, Message message) Decodes the payload from a Netty buffer in a big switch
static PublicKey	decodePublicKey(DataInput buffer, byte[] receivedRawPublicKey)
static int	encodeData(Collection<DataOutput> result, DataOutputFactory factory, Message message, Data data)
static org.jboss.netty.buffer.ChannelBuffer	encodeHeader(org.jboss.netty.buffer.ChannelBuffer buffer, Message message) The format looks as follows: 32bit p2p version - 32bit id - 4bit message type - 4bit message name - 160bit sender id - 16bit tcp port - 16bit udp port - 160bit recipient id - 32bit message length - 16bit (4x4)content type - 8bit network address information.
static void	encodePayload(Message message, List<org.jboss.netty.buffer.ChannelBuffer> payloadBuffers) Encode payload
static void	encodeSecurity(Message message, List<org.jboss.netty.buffer.ChannelBuffer> buffers)

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_BYTE_ARRAY

public static final byte[] EMPTY_BYTE_ARRAY

MAX_BYTE

public static final int MAX_BYTE

See Also:

Constant Field Values

HEADER_SIZE

public static final int HEADER_SIZE

See Also:

Constant Field Values

Constructor Detail

MessageCodec

public MessageCodec()

Method Detail

encodeHeader

public static org.jboss.netty.buffer.ChannelBuffer encodeHeader(org.jboss.netty.buffer.ChannelBuffer buffer,
                                                                Message message)

The format looks as follows: 32bit p2p version - 32bit id - 4bit message type - 4bit message name - 160bit sender id - 16bit tcp port - 16bit udp port - 160bit recipient id - 32bit message length - 16bit (4x4)content type - 8bit network address information. It total, the header is of size 60 bytes.

Parameters:

buffer - The Netty buffer to fill

message - The message with the header that will be serialized

Returns:

The buffer passed as an argument

encodePayload

public static void encodePayload(Message message,
                                 List<org.jboss.netty.buffer.ChannelBuffer> payloadBuffers)
                          throws InvalidKeyException,
                                 SignatureException,
                                 NoSuchAlgorithmException

Encode payload

Parameters:

buffer - The Netty buffer to fill

message - The message which contains the payload

Throws:

NoSuchAlgorithmException

SignatureException

InvalidKeyException

encodeSecurity

public static void encodeSecurity(Message message,
                                  List<org.jboss.netty.buffer.ChannelBuffer> buffers)
                           throws NoSuchAlgorithmException,
                                  InvalidKeyException,
                                  SignatureException,
                                  IOException

Throws:

NoSuchAlgorithmException

InvalidKeyException

SignatureException

IOException

encodeData

public static int encodeData(Collection<DataOutput> result,
                             DataOutputFactory factory,
                             Message message,
                             Data data)

decodeHeader

public static Message decodeHeader(org.jboss.netty.buffer.ChannelBuffer buffer,
                                   InetAddress sender)
                            throws DecoderException

Decode a message header from a Netty buffer

Parameters:

buffer - The buffer to decode from

sender - The sender of the packet, which has been set in the socket class

Returns:

The partial message, only the header fields are filled

Throws:

DecoderException

decodePayload

public static void decodePayload(Message.Content content,
                                 org.jboss.netty.buffer.ChannelBuffer buffer,
                                 Message message)
                          throws InvalidKeyException,
                                 SignatureException,
                                 NoSuchAlgorithmException,
                                 InvalidKeySpecException,
                                 IOException

Decodes the payload from a Netty buffer in a big switch

Parameters:

content - The content type

buffer - The buffer to read from

message - The message to store the results

Throws:

IndexOutOfBoundsException - If a buffer is read beyond its limits

NoSuchAlgorithmException

SignatureException

InvalidKeyException

InvalidKeySpecException

InvalidKeySpecException

IOException

ASN1Exception

UnsupportedEncodingException - If UTF-8 is not there

decodeData

public static Data decodeData(DataInput buffer,
                              Message message)
                       throws InvalidKeyException,
                              NoSuchAlgorithmException,
                              InvalidKeySpecException,
                              UnknownHostException

Throws:

InvalidKeyException

NoSuchAlgorithmException

InvalidKeySpecException

UnknownHostException

createData

public static Data createData(byte[] me,
                              int offset,
                              int length,
                              int ttl,
                              boolean protectedEntry,
                              PeerAddress originator)

decodePublicKey

public static PublicKey decodePublicKey(DataInput buffer,
                                        byte[] receivedRawPublicKey)
                                 throws InvalidKeyException,
                                        NoSuchAlgorithmException,
                                        InvalidKeySpecException

Throws:

InvalidKeyException

NoSuchAlgorithmException

InvalidKeySpecException