org.eclipse.jgit.transport
Class SideBandOutputStream

java.lang.Object
  java.io.OutputStream
      org.eclipse.jgit.transport.SideBandOutputStream

All Implemented Interfaces:

Closeable, Flushable

public class SideBandOutputStream
extends OutputStream

Multiplexes data and progress messages.

This stream is buffered at packet sizes, so the caller doesn't need to wrap it in yet another buffered stream.

Since:

2.0

Field Summary

static int	CH_DATA Channel used for pack data.
static int	CH_ERROR Channel used for error messages.
static int	CH_PROGRESS Channel used for progress messages.
static int	MAX_BUF Maximum buffer size for a single packet of sideband data.
static int	SMALL_BUF Default buffer size for a small amount of data.

Constructor Summary

SideBandOutputStream(int chan, int sz, OutputStream os)
Create a new stream to write side band packets.

Method Summary

void	flush()
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.io.OutputStream

close, write

Methods inherited from class java.lang.Object

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

Field Detail

CH_DATA

public static final int CH_DATA

Channel used for pack data.

See Also:

Constant Field Values

CH_PROGRESS

public static final int CH_PROGRESS

Channel used for progress messages.

See Also:

Constant Field Values

CH_ERROR

public static final int CH_ERROR

Channel used for error messages.

See Also:

Constant Field Values

SMALL_BUF

public static final int SMALL_BUF

Default buffer size for a small amount of data.

See Also:

Constant Field Values

MAX_BUF

public static final int MAX_BUF

Maximum buffer size for a single packet of sideband data.

See Also:

Constant Field Values

Constructor Detail

SideBandOutputStream

public SideBandOutputStream(int chan,
                            int sz,
                            OutputStream os)

Create a new stream to write side band packets.

Parameters:

chan - channel number to prefix all packets with, so the remote side can demultiplex the stream and get back the original data. Must be in the range [0, 255].

sz - maximum size of a data packet within the stream. The remote side needs to agree to the packet size to prevent buffer overflows. Must be in the range [HDR_SIZE + 1, MAX_BUF).

os - stream that the packets are written onto. This stream should be attached to a SideBandInputStream on the remote side.

Method Detail

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

write

public void write(int b)
           throws IOException

Specified by:

write in class OutputStream

Throws:

IOException