org.apache.coyote.http11
Class InternalInputBuffer

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

All Implemented Interfaces:

InputBuffer

public class InternalInputBuffer

extends java.lang.Object

implements InputBuffer

Implementation of InputBuffer which provides HTTP request header parsing as well as transfer decoding.

Author:

Remy Maucherat

Nested Class Summary

protected class

InternalInputBuffer.InputStreamInputBuffer This class is an input buffer which will read its data from an input stream.

Field Summary

protected InputFilter[]	activeFilters Active filters (in order).
protected char[]	ascbuf Pointer to the US-ASCII header buffer.
protected byte[]	bodyBuffer HTTP body buffer.
protected byte[]	buf Pointer to the current read buffer.
protected InputFilter[]	filterLibrary Filter library.
protected char[]	headerBuffer US-ASCII header buffer.
protected byte[]	headerBuffer1 HTTP header buffer no 1.
protected byte[]	headerBuffer2 HTTP header buffer no 2.
protected MimeHeaders	headers Headers of the associated request.
protected java.io.InputStream	inputStream Underlying input stream.
protected InputBuffer	inputStreamInputBuffer Underlying input buffer.
protected int	lastActiveFilter Index of the last active filter.
protected int	lastValid Last valid byte.
protected boolean	parsingHeader State.
protected int	pos Position in the buffer.
protected Request	request Associated Coyote request.
protected static StringManager	sm The string manager for this package.
protected boolean	swallowInput Swallow input ? (in the case of an expectation)

Constructor Summary

InternalInputBuffer(Request request)
Default constructor.

InternalInputBuffer(Request request, int headerBufferSize)
Alternate constructor.

Method Summary

void	addActiveFilter(InputFilter filter) Add an input filter to the filter library.
void	addFilter(InputFilter filter) Add an input filter to the filter library.
void	clearFilters() Clear filters.
int	doRead(ByteChunk chunk, Request req) Read some bytes.
void	endRequest() End request (consumes leftover bytes).
protected boolean	fill() Fill the internal buffer using data from the undelying input stream.
InputFilter[]	getFilters() Get filters.
java.io.InputStream	getInputStream() Get the underlying socket input stream.
void	nextRequest() End processing of current HTTP request.
boolean	parseHeader() Parse an HTTP header.
void	parseHeaders() Parse the HTTP headers.
void	parseRequestLine() Read the request line.
void	recycle() Recycle the input buffer.
void	setInputStream(java.io.InputStream inputStream) Set the underlying socket input stream.
void	setSwallowInput(boolean swallowInput) Set the swallow input flag.

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.

request

protected Request request

Associated Coyote request.

headers

protected MimeHeaders headers

Headers of the associated request.

parsingHeader

protected boolean parsingHeader

State.

swallowInput

protected boolean swallowInput

Swallow input ? (in the case of an expectation)

buf

protected byte[] buf

Pointer to the current read buffer.

ascbuf

protected char[] ascbuf

Pointer to the US-ASCII header buffer.

lastValid

protected int lastValid

Last valid byte.

pos

protected int pos

Position in the buffer.

headerBuffer1

protected byte[] headerBuffer1

HTTP header buffer no 1.

headerBuffer2

protected byte[] headerBuffer2

HTTP header buffer no 2.

bodyBuffer

protected byte[] bodyBuffer

HTTP body buffer.

headerBuffer

protected char[] headerBuffer

US-ASCII header buffer.

inputStream

protected java.io.InputStream inputStream

Underlying input stream.

inputStreamInputBuffer

protected InputBuffer inputStreamInputBuffer

Underlying input buffer.

filterLibrary

protected InputFilter[] filterLibrary

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

activeFilters

protected InputFilter[] activeFilters

Active filters (in order).

lastActiveFilter

protected int lastActiveFilter

Index of the last active filter.

Constructor Detail

InternalInputBuffer

public InternalInputBuffer(Request request)

Default constructor.

InternalInputBuffer

public InternalInputBuffer(Request request,
                           int headerBufferSize)

Alternate constructor.

Method Detail

setInputStream

public void setInputStream(java.io.InputStream inputStream)

Set the underlying socket input stream.

getInputStream

public java.io.InputStream getInputStream()

Get the underlying socket input stream.

addFilter

public void addFilter(InputFilter filter)

Add an input filter to the filter library.

getFilters

public InputFilter[] getFilters()

Get filters.

clearFilters

public void clearFilters()

Clear filters.

addActiveFilter

public void addActiveFilter(InputFilter filter)

Add an input filter to the filter library.

setSwallowInput

public void setSwallowInput(boolean swallowInput)

Set the swallow input flag.

recycle

public void recycle()

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

nextRequest

public void nextRequest()
                 throws java.io.IOException

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.

Throws:

java.io.IOException

endRequest

public void endRequest()
                throws java.io.IOException

End request (consumes leftover bytes).

Throws:

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

parseRequestLine

public void parseRequestLine()
                      throws java.io.IOException

Read the request line. This function is meant to be used during the HTTP request header parsing. Do NOT attempt to read the request body using it.

Throws:

java.io.IOException - If an exception occurs during the underlying socket read operations, or if the given buffer is not big enough to accomodate the whole line.

parseHeaders

public void parseHeaders()
                  throws java.io.IOException

Parse the HTTP headers.

Throws:

java.io.IOException

parseHeader

public boolean parseHeader()
                    throws java.io.IOException

Parse an HTTP header.

Returns:

false after reading a blank line (which indicates that the HTTP header parsing is done

Throws:

java.io.IOException

doRead

public int doRead(ByteChunk chunk,
                  Request req)
           throws java.io.IOException

Read some bytes.

Specified by:

doRead in interface InputBuffer

Throws:

java.io.IOException

fill

protected boolean fill()
                throws java.io.IOException

Fill the internal buffer using data from the undelying input stream.

Returns:

false if at end of stream

Throws:

java.io.IOException