org.mule.transport.tcp.protocols

Class LengthProtocol

java.lang.Object

org.mule.transport.tcp.protocols.AbstractByteProtocol

org.mule.transport.tcp.protocols.DirectProtocol

org.mule.transport.tcp.protocols.LengthProtocol

All Implemented Interfaces:

TcpProtocol

Direct Known Subclasses:

MuleMessageLengthProtocol

public class LengthProtocol
extends DirectProtocol

The LengthProtocol is an application level tcp protocol that can be used to transfer large amounts of data without risking some data to be loss. The protocol is defined by sending / reading an integer (the packet length) and then the data to be transferred.

Note that use of this protocol must be symmetric - both the sending and receiving connectors must use the same protocol.

Field Summary

Fields

Modifier and Type	Field and Description
static int	NO_MAX_LENGTH

Fields inherited from class org.mule.transport.tcp.protocols.DirectProtocol

bufferSize, UNLIMITED

Fields inherited from class org.mule.transport.tcp.protocols.AbstractByteProtocol

EOF, NO_STREAM, STREAM_OK

Constructor Summary

Constructors

Constructor and Description
LengthProtocol()
LengthProtocol(int maxMessageLength)

Method Summary

Methods

Modifier and Type	Method and Description
int	getMaxMessageLength()
protected boolean	isRepeat(int len, int available) Read all four bytes for initial integer (limit is set in read)
Object	read(InputStream is) Reads the input stream and returns a whole message.
void	setMaxMessageLength(int maxMessageLength)
protected void	writeByteArray(OutputStream os, byte[] data)

Methods inherited from class org.mule.transport.tcp.protocols.DirectProtocol

read, remaining

Methods inherited from class org.mule.transport.tcp.protocols.AbstractByteProtocol

copy, copy, createResponse, nullEmptyArray, safeRead, safeRead, write

Methods inherited from class java.lang.Object

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

Field Detail

NO_MAX_LENGTH

public static final int NO_MAX_LENGTH

See Also:

Constant Field Values

Constructor Detail

LengthProtocol

public LengthProtocol()

LengthProtocol

public LengthProtocol(int maxMessageLength)

Method Detail

read

public Object read(InputStream is)
            throws IOException

Description copied from interface: TcpProtocol

Reads the input stream and returns a whole message.

Specified by:

read in interface TcpProtocol

Overrides:

read in class DirectProtocol

Parameters:

is - the input stream

Returns:

an array of byte containing a full message

Throws:

IOException - if an exception occurs

writeByteArray

protected void writeByteArray(OutputStream os,
                  byte[] data)
                       throws IOException

Overrides:

writeByteArray in class AbstractByteProtocol

Throws:

IOException

isRepeat

protected boolean isRepeat(int len,
               int available)

Read all four bytes for initial integer (limit is set in read)

Overrides:

isRepeat in class DirectProtocol

Parameters:

len - Amount transferred last call (-1 on EOF or socket error)

available - Amount available

Returns:

true if the transfer should continue

getMaxMessageLength

public int getMaxMessageLength()

setMaxMessageLength

public void setMaxMessageLength(int maxMessageLength)