net.tomp2p.message

Class MessageCodec

java.lang.Object

net.tomp2p.message.MessageCodec

public class MessageCodec
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static byte[]	EMPTY_BYTE_ARRAY
static int	HEADER_SIZE
static int	MAX_BYTE

Constructor Summary

Constructors

Constructor and Description
MessageCodec()

Method Summary

Methods

Modifier and Type	Method and Description
static Data	createData(byte[] me, int offset, int length, int ttl, boolean protectedEntry, PeerAddress originator)
static Data	decodeData(DataInput buffer, PeerAddress originator)
static Message	decodeHeader(org.jboss.netty.buffer.ChannelBuffer buffer, InetSocketAddress recipient, InetSocketAddress sender) Decode a message header from a Netty buffer
static boolean	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 boolean	decodeSignature(Signature signature, Message message, org.jboss.netty.buffer.ChannelBuffer buffer)
static int	encodeData(ProtocolChunkedInput input, 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 - 16bit (4x4)content type - 8bit network address information.
static void	encodePayload(Message message, ProtocolChunkedInput input) Encode payload

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 - 16bit (4x4)content type - 8bit network address information. It total, the header is of size 56 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,
                 ProtocolChunkedInput input)
                          throws InvalidKeyException,
                                 SignatureException,
                                 NoSuchAlgorithmException

Encode payload

Parameters:

buffer - The Netty buffer to fill

message - The message which contains the payload

Throws:

NoSuchAlgorithmException

SignatureException

InvalidKeyException

encodeData

public static int encodeData(ProtocolChunkedInput input,
             Message message,
             Data data)

decodeHeader

public static Message decodeHeader(org.jboss.netty.buffer.ChannelBuffer buffer,
                   InetSocketAddress recipient,
                   InetSocketAddress 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 boolean decodePayload(Message.Content content,
                    org.jboss.netty.buffer.ChannelBuffer buffer,
                    Message message)
                             throws InvalidKeyException,
                                    SignatureException,
                                    NoSuchAlgorithmException,
                                    InvalidKeySpecException,
                                    IOException,
                                    DecoderException

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

DecoderException

ASN1Exception

UnsupportedEncodingException - If UTF-8 is not there

decodeData

public static Data decodeData(DataInput buffer,
              PeerAddress originator)
                       throws InvalidKeyException,
                              NoSuchAlgorithmException,
                              InvalidKeySpecException

Throws:

InvalidKeyException

NoSuchAlgorithmException

InvalidKeySpecException

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

decodeSignature

public static boolean decodeSignature(Signature signature,
                      Message message,
                      org.jboss.netty.buffer.ChannelBuffer buffer)
                               throws NoSuchAlgorithmException,
                                      SignatureException,
                                      InvalidKeyException,
                                      IOException

Throws:

NoSuchAlgorithmException

SignatureException

InvalidKeyException

IOException