org.apache.coyote.http11
Class InternalOutputBuffer

java.lang.Object
  org.apache.coyote.http11.InternalOutputBuffer

All Implemented Interfaces:

ByteChunk.ByteOutputChannel, OutputBuffer

public class InternalOutputBuffer

extends java.lang.Object

implements OutputBuffer, ByteChunk.ByteOutputChannel

Output buffer.

Author:

Remy Maucherat

Nested Class Summary

protected class

InternalOutputBuffer.OutputStreamOutputBuffer This class is an output buffer which will write data to an output stream.

Field Summary

protected OutputFilter[]	activeFilters Active filter (which is actually the top of the pipeline).
protected byte[]	buf Pointer to the current read buffer.
protected boolean	committed Committed flag.
protected OutputFilter[]	filterLibrary Filter library.
protected boolean	finished Finished flag.
protected byte[]	headerBuffer HTTP header buffer.
protected MimeHeaders	headers Headers of the associated request.
protected int	lastActiveFilter Index of the last active filter.
protected java.io.OutputStream	outputStream Underlying output stream.
protected OutputBuffer	outputStreamOutputBuffer Underlying output buffer.
protected int	pos Position in the buffer.
protected Response	response Associated Coyote response.
protected static StringManager	sm The string manager for this package.
protected ByteChunk	socketBuffer Socket buffer.
protected boolean	useSocketBuffer Socket buffer (extra buffering to reduce number of packets sent).

Constructor Summary

InternalOutputBuffer(Response response)
Default constructor.

InternalOutputBuffer(Response response, int headerBufferSize)
Alternate constructor.

Method Summary

void	addActiveFilter(OutputFilter filter) Add an output filter to the filter library.
void	addFilter(OutputFilter filter) Add an output filter to the filter library.
void	clearFilters() Clear filters.
protected void	commit() Commit the response.
int	doWrite(ByteChunk chunk, Response res) Write the contents of a byte chunk.
void	endHeaders() End the header block.
void	endRequest() End request.
void	flush() Flush the response.
OutputFilter[]	getFilters() Get filters.
java.io.OutputStream	getOutputStream() Get the underlying socket output stream.
void	nextRequest() End processing of current HTTP request.
void	realWriteBytes(byte[] cbuf, int off, int len) Callback to write data from the buffer.
void	recycle() Recycle the output buffer.
void	reset() Reset current response.
void	sendAck() Send an acknoledgement.
void	sendHeader(ByteChunk name, ByteChunk value) Send a header.
void	sendHeader(MessageBytes name, MessageBytes value) Send a header.
void	sendHeader(java.lang.String name, java.lang.String value) Send a header.
void	sendStatus() Send the response status line.
void	setOutputStream(java.io.OutputStream outputStream) Set the underlying socket output stream.
void	setSocketBuffer(int socketBufferSize) Set the socket buffer size.
protected void	write(byte[] b) This method will write the contents of the specyfied byte buffer to the output stream, without filtering.
protected void	write(ByteChunk bc) This method will write the contents of the specyfied message bytes buffer to the output stream, without filtering.
protected void	write(int i) This method will print the specified integer to the output stream, without filtering.
protected void	write(MessageBytes mb) This method will write the contents of the specyfied message bytes buffer to the output stream, without filtering.
protected void	write(java.lang.String s) This method will write the contents of the specyfied String to the output stream, without filtering.

Methods inherited from class java.lang.Object

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

Field Detail

sm

protected static StringManager sm

The string manager for this package.

response

protected Response response

Associated Coyote response.

headers

protected MimeHeaders headers

Headers of the associated request.

committed

protected boolean committed

Committed flag.

finished

protected boolean finished

Finished flag.

buf

protected byte[] buf

Pointer to the current read buffer.

pos

protected int pos

Position in the buffer.

headerBuffer

protected byte[] headerBuffer

HTTP header buffer.

outputStream

protected java.io.OutputStream outputStream

Underlying output stream.

outputStreamOutputBuffer

protected OutputBuffer outputStreamOutputBuffer

Underlying output buffer.

filterLibrary

protected OutputFilter[] filterLibrary

Filter library. Note: Filter[0] is always the "chunked" filter.

activeFilters

protected OutputFilter[] activeFilters

Active filter (which is actually the top of the pipeline).

lastActiveFilter

protected int lastActiveFilter

Index of the last active filter.

socketBuffer

protected ByteChunk socketBuffer

Socket buffer.

useSocketBuffer

protected boolean useSocketBuffer

Socket buffer (extra buffering to reduce number of packets sent).

Constructor Detail

InternalOutputBuffer

public InternalOutputBuffer(Response response)

Default constructor.

InternalOutputBuffer

public InternalOutputBuffer(Response response,
                            int headerBufferSize)

Alternate constructor.

Method Detail

setOutputStream

public void setOutputStream(java.io.OutputStream outputStream)

Set the underlying socket output stream.

getOutputStream

public java.io.OutputStream getOutputStream()

Get the underlying socket output stream.

setSocketBuffer

public void setSocketBuffer(int socketBufferSize)

Set the socket buffer size.

addFilter

public void addFilter(OutputFilter filter)

Add an output filter to the filter library.

getFilters

public OutputFilter[] getFilters()

Get filters.

clearFilters

public void clearFilters()

Clear filters.

addActiveFilter

public void addActiveFilter(OutputFilter filter)

Add an output filter to the filter library.

flush

public void flush()
           throws java.io.IOException

Flush the response.

Throws:

java.io.IOException - an undelying I/O error occured

reset

public void reset()

Reset current response.

Throws:

java.lang.IllegalStateException - if the response has already been committed

recycle

public void recycle()

Recycle the output buffer. This should be called when closing the connection.

nextRequest

public void nextRequest()

End processing of current HTTP request. Note: All bytes of the current request should have been already consumed. This method only resets all the pointers so that we are ready to parse the next HTTP request.

endRequest

public void endRequest()
                throws java.io.IOException

End request.

Throws:

java.io.IOException - an undelying I/O error occured

sendAck

public void sendAck()
             throws java.io.IOException

Send an acknoledgement.

Throws:

java.io.IOException

sendStatus

public void sendStatus()

Send the response status line.

sendHeader

public void sendHeader(MessageBytes name,
                       MessageBytes value)

Send a header.

Parameters:

name - Header name

value - Header value

sendHeader

public void sendHeader(ByteChunk name,
                       ByteChunk value)

Send a header.

Parameters:

name - Header name

value - Header value

sendHeader

public void sendHeader(java.lang.String name,
                       java.lang.String value)

Send a header.

Parameters:

name - Header name

value - Header value

endHeaders

public void endHeaders()

End the header block.

doWrite

public int doWrite(ByteChunk chunk,
                   Response res)
            throws java.io.IOException

Write the contents of a byte chunk.

Specified by:

doWrite in interface OutputBuffer

Parameters:

chunk - byte chunk

Returns:

number of bytes written

Throws:

java.io.IOException - an undelying I/O error occured

commit

protected void commit()
               throws java.io.IOException

Commit the response.

Throws:

java.io.IOException - an undelying I/O error occured

write

protected void write(MessageBytes mb)

This method will write the contents of the specyfied message bytes buffer to the output stream, without filtering. This method is meant to be used to write the response header.

Parameters:

mb - data to be written

write

protected void write(ByteChunk bc)

This method will write the contents of the specyfied message bytes buffer to the output stream, without filtering. This method is meant to be used to write the response header.

Parameters:

bc - data to be written

write

protected void write(byte[] b)

This method will write the contents of the specyfied byte buffer to the output stream, without filtering. This method is meant to be used to write the response header.

Parameters:

b - data to be written

write

protected void write(java.lang.String s)

This method will write the contents of the specyfied String to the output stream, without filtering. This method is meant to be used to write the response header.

Parameters:

s - data to be written

write

protected void write(int i)

This method will print the specified integer to the output stream, without filtering. This method is meant to be used to write the response header.

Parameters:

i - data to be written

realWriteBytes

public void realWriteBytes(byte[] cbuf,
                           int off,
                           int len)
                    throws java.io.IOException

Callback to write data from the buffer.

Specified by:

realWriteBytes in interface ByteChunk.ByteOutputChannel

Throws:

java.io.IOException