org.apache.coyote.http11

Class InternalNioInputBuffer

public class InternalNioInputBuffer extends Object implements InputBuffer

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

Nested Class Summary
static class	InternalNioInputBuffer.HeaderParseData
protected class	InternalNioInputBuffer.SocketInputBuffer 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 byte[]	buf Pointer to the current read buffer.
protected int	end Pos of the end of the header in the buffer, which is also the start of the body.
protected InputFilter[]	filterLibrary Filter library.
protected InternalNioInputBuffer.HeaderParseData	headerData
protected InternalNioInputBuffer.HeaderParsePosition	headerParsePos
protected MimeHeaders	headers Headers of the associated request.
protected InputBuffer	inputStreamInputBuffer Underlying input buffer.
protected int	lastActiveFilter Index of the last active filter.
protected int	lastValid Last valid byte.
protected boolean	parsingHeader Parsing state - used for non blocking parsing so that when more data arrives, we can pick up where we left off.
protected boolean	parsingRequestLine
protected boolean	parsingRequestLineEol
protected int	parsingRequestLinePhase
protected int	parsingRequestLineQPos
protected int	parsingRequestLineStart
protected NioSelectorPool	pool Selector pool, for blocking reads and blocking writes
protected int	pos Position in the buffer.
protected Request	request Associated Coyote request.
protected static StringManager	sm The string manager for this package.
protected NioChannel	socket Underlying socket.
protected boolean	swallowInput Swallow input ?

Constructor Summary
	InternalNioInputBuffer(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.
int	available() Available bytes (note that due to encoding, this may not correspond )
void	clearFilters() Clear filters.
int	doRead(ByteChunk chunk, Request req) Read some bytes.
void	endRequest() End request (consumes leftover bytes).
protected boolean	fill(boolean timeout, boolean block) Fill the internal buffer using data from the undelying input stream.
InputFilter[]	getFilters() Get filters.
NioSelectorPool	getSelectorPool()
NioChannel	getSocket() Get the underlying socket input stream.
boolean	isReadable() Returns true if there are bytes available from the socket layer
int	nbRead() Issues a non blocking read
void	nextRequest() End processing of current HTTP request.
InternalNioInputBuffer.HeaderParseStatus	parseHeader() Parse an HTTP header.
boolean	parseHeaders() Parse the HTTP headers.
boolean	parseRequestLine(boolean useAvailableData) Read the request line.
void	recycle() Recycle the input buffer.
void	setSelectorPool(NioSelectorPool pool)
void	setSocket(NioChannel socket) Set the underlying socket.
void	setSwallowInput(boolean swallowInput) Set the swallow input flag.

Field Detail

activeFilters

protected InputFilter[] activeFilters

Active filters (in order).

buf

protected byte[] buf

Pointer to the current read buffer.

end

protected int end

Pos of the end of the header in the buffer, which is also the start of the body.

filterLibrary

protected InputFilter[] filterLibrary

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

headerData

protected InternalNioInputBuffer.HeaderParseData headerData

headerParsePos

protected InternalNioInputBuffer.HeaderParsePosition headerParsePos

headers

protected MimeHeaders headers

Headers of the associated request.

inputStreamInputBuffer

protected InputBuffer inputStreamInputBuffer

Underlying input buffer.

lastActiveFilter

protected int lastActiveFilter

Index of the last active filter.

parsingHeader

protected boolean parsingHeader

Parsing state - used for non blocking parsing so that when more data arrives, we can pick up where we left off.

pool

protected NioSelectorPool pool

Selector pool, for blocking reads and blocking writes

pos

protected int pos

Position in the buffer.

request

protected Request request

Associated Coyote request.

sm

protected static StringManager sm

The string manager for this package.

socket

protected NioChannel socket

Underlying socket.

swallowInput

protected boolean swallowInput

Swallow input ? (in the case of an expectation)

Constructor Detail

InternalNioInputBuffer

public InternalNioInputBuffer(Request request, int headerBufferSize)

Alternate constructor.

Method Detail

addActiveFilter

public void addActiveFilter(InputFilter filter)

Add an input filter to the filter library.

addFilter

public void addFilter(InputFilter filter)

Add an input filter to the filter library.

available

public int available()

Available bytes (note that due to encoding, this may not correspond )

clearFilters

public void clearFilters()

Clear filters.

doRead

public int doRead(ByteChunk chunk, Request req)

Read some bytes.

endRequest

public void endRequest()

End request (consumes leftover bytes).

Throws: IOException an undelying I/O error occured

fill

protected boolean fill(boolean timeout, boolean block)

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

Returns: false if at end of stream

getFilters

public InputFilter[] getFilters()

Get filters.

getSelectorPool

public NioSelectorPool getSelectorPool()

getSocket

public NioChannel getSocket()

Get the underlying socket input stream.

isReadable

public boolean isReadable()

Returns true if there are bytes available from the socket layer

Returns: boolean

Throws: IOException

nbRead

public int nbRead()

Issues a non blocking read

Returns: int

Throws: 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.

parseHeader

public InternalNioInputBuffer.HeaderParseStatus parseHeader()

Parse an HTTP header.

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

parseHeaders

public boolean parseHeaders()

Parse the HTTP headers.

parseRequestLine

public boolean parseRequestLine(boolean useAvailableData)

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.

Returns: true if data is properly fed; false if no data is available immediately and thread should be freed

Throws: 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.