org.mule.transport.tcp.protocols

Class DirectProtocol

java.lang.Object

org.mule.transport.tcp.protocols.AbstractByteProtocol

org.mule.transport.tcp.protocols.DirectProtocol

All Implemented Interfaces:

TcpProtocol

Direct Known Subclasses:

EOFProtocol, LengthProtocol, MuleMessageDirectProtocol

public class DirectProtocol
extends AbstractByteProtocol

The DirectProtocol class is an application level tcp protocol that does nothing. The socket is read until no more bytes are (momentarily) available (previously the transfer buffer also had to be full on the previous read, which made stronger requirements on the underlying network). On slow networks EOFProtocol and LengthProtocol may be more reliable.

Writing simply writes the data to the socket.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	bufferSize
protected static int	UNLIMITED

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

EOF, NO_STREAM, STREAM_OK

Constructor Summary

Constructors

Constructor and Description
DirectProtocol()
DirectProtocol(boolean streamOk, int bufferSize)

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	isRepeat(int len, int available) Decide whether to repeat transfer.
Object	read(InputStream is) Reads the input stream and returns a whole message.
Object	read(InputStream is, int limit)
protected int	remaining(int limit, int remain, int len)

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

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

Methods inherited from class java.lang.Object

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

Field Detail

UNLIMITED

protected static final int UNLIMITED

See Also:

Constant Field Values

bufferSize

protected int bufferSize

Constructor Detail

DirectProtocol

public DirectProtocol()

DirectProtocol

public DirectProtocol(boolean streamOk,
              int bufferSize)

Method Detail

read

public Object read(InputStream is)
            throws IOException

Description copied from interface: TcpProtocol

Reads the input stream and returns a whole message.

Parameters:

is - the input stream

Returns:

an array of byte containing a full message

Throws:

IOException - if an exception occurs

read

public Object read(InputStream is,
          int limit)
            throws IOException

Throws:

IOException

remaining

protected int remaining(int limit,
            int remain,
            int len)

isRepeat

protected boolean isRepeat(int len,
               int available)

Decide whether to repeat transfer. This implementation does so if more data are available. Note that previously, while documented as such, there was also the additional requirement that the previous transfer completely used the transfer buffer.

Parameters:

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

available - Amount available

Returns:

true if the transfer should continue