Package org.apache.coyote.http11

Class Http11InputBuffer

java.lang.Object

org.apache.coyote.http11.Http11InputBuffer

All Implemented Interfaces:

InputBuffer, HttpHeaderParser.HeaderDataSource, ApplicationBufferHandler

public class Http11InputBuffer
extends Object
implements InputBuffer, ApplicationBufferHandler, HttpHeaderParser.HeaderDataSource

InputBuffer for HTTP that provides request header parsing as well as transfer encoding.

Field Summary

Fields inherited from interface org.apache.tomcat.util.net.ApplicationBufferHandler

EMPTY, EMPTY_BUFFER

Constructor Summary

Constructors

Constructor	Description
Http11InputBuffer(Request request, int headerBufferSize, HttpParser httpParser)

Method Summary

Modifier and Type	Method	Description
int	available()	Obtain an estimate of the number of bytes that can be read without blocking.
int	doRead(ApplicationBufferHandler handler)	Read from the input stream into the ByteBuffer provided by the ApplicationBufferHandler.
void	expand(int size)	Expand the byte buffer to at least the given size.
boolean	fillHeaderBuffer()	Read more data into the header buffer.
ByteBuffer	getByteBuffer()
ByteBuffer	getHeaderByteBuffer()	Obtain a reference to the buffer containing the header data.
void	setByteBuffer(ByteBuffer buffer)	Set the byte buffer.

Methods inherited from class java.lang.Object

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

Constructor Details

Http11InputBuffer

public Http11InputBuffer(Request request,
 int headerBufferSize,
 HttpParser httpParser)

Method Details

doRead

public int doRead(ApplicationBufferHandler handler)
           throws IOException

Description copied from interface: InputBuffer

Read from the input stream into the ByteBuffer provided by the ApplicationBufferHandler. IMPORTANT: the current model assumes that the protocol will 'own' the ByteBuffer and return a pointer to it.

Specified by:

doRead in interface InputBuffer

Parameters:

handler - ApplicationBufferHandler that provides the buffer to read data into.

Returns:

The number of bytes that have been added to the buffer or -1 for end of stream

Throws:

IOException - If an I/O error occurs reading from the input stream

available

public int available()

Description copied from interface: InputBuffer

Obtain an estimate of the number of bytes that can be read without blocking. Typically, this will be the number of available bytes known to be buffered.

Specified by:

available in interface InputBuffer

Returns:

The number of bytes that can be read without blocking

fillHeaderBuffer

public boolean fillHeaderBuffer()
                         throws IOException

Description copied from interface: HttpHeaderParser.HeaderDataSource

Read more data into the header buffer. The implementation is expected to determine if blocking or not blocking IO should be used.

Specified by:

fillHeaderBuffer in interface HttpHeaderParser.HeaderDataSource

Returns:

true if more data was added to the buffer, otherwise false

Throws:

IOException - If an I/O error occurred while obtaining more header data

setByteBuffer

public void setByteBuffer(ByteBuffer buffer)

Description copied from interface: ApplicationBufferHandler

Set the byte buffer.

Specified by:

setByteBuffer in interface ApplicationBufferHandler

Parameters:

buffer - the byte buffer

getByteBuffer

public ByteBuffer getByteBuffer()

Specified by:

getByteBuffer in interface ApplicationBufferHandler

Returns:

the byte buffer

getHeaderByteBuffer

public ByteBuffer getHeaderByteBuffer()

Description copied from interface: HttpHeaderParser.HeaderDataSource

Obtain a reference to the buffer containing the header data.

Specified by:

getHeaderByteBuffer in interface HttpHeaderParser.HeaderDataSource

Returns:

The buffer containing the header data

expand

public void expand(int size)

Description copied from interface: ApplicationBufferHandler

Expand the byte buffer to at least the given size. Some implementations may not implement this.

Specified by:

expand in interface ApplicationBufferHandler

Parameters:

size - the desired size