wttools.protocols.http
Class HTTPInputStream

java.lang.Object
  |
  +--java.io.InputStream
        |
        +--java.io.FilterInputStream
              |
              +--wttools.protocols.http.HTTPInputStream

public class HTTPInputStream

extends java.io.FilterInputStream

HTTPInputStream.java Created: Mon Sep 17 16:37:47 2001

Version:

$Revision: 1.7 $

Author:

Artur Hefczyc

Field Summary

protected int	bytes_read variable bytes_read contains value of bytes already read for current chunk.
protected int	chunk_size variable chunk_size contains value of current chunk size in bytes.
protected int	dataEncodingType variable dataEncodingType contains value of
protected boolean	debug variable debug contains value of
protected static int	ENC_BINARY Describe constant ENC_BINARY here.
protected static int	ENC_CHUNKED Describe constant ENC_CHUNKED here.
protected static int	ENC_UNKNOWN Describe constant ENC_UNKNOWN here.
protected java.util.HashMap	headers variable headers contains value of
protected byte[]	one_byte Variable one_byte is an array of one byte capasity.
protected float	readBytes variable readBytes contains value of
protected float	readMilis variable readMilis contains value of

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

HTTPInputStream(java.io.InputStream in)
Creates a new HTTPInputStream instance.

Method Summary

protected void	deb(java.lang.String str) deb method performs
protected java.util.HashMap	getAllHeaders() getAllHeaders method performs
boolean	isDebug() Get the value of debug.
protected void	raw(java.lang.String str) raw method performs
int	read() read method performs
int	read(byte[] b) read method performs
int	read(byte[] b, int off, int len) read method performs
protected int	readBinary(byte[] b, int off, int len) readBinary method performs
protected int	readChunked(byte[] b, int off, int len) readChunked method streams chunked data from http server.
protected int	readNextChunkSize() readNextChunkSize method performs
void	setDebug(boolean v) Set the value of debug.

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

ENC_UNKNOWN

protected static final int ENC_UNKNOWN

Describe constant ENC_UNKNOWN here.

ENC_BINARY

protected static final int ENC_BINARY

Describe constant ENC_BINARY here.

ENC_CHUNKED

protected static final int ENC_CHUNKED

Describe constant ENC_CHUNKED here.

debug

protected boolean debug

variable debug contains value of

dataEncodingType

protected int dataEncodingType

variable dataEncodingType contains value of

headers

protected java.util.HashMap headers

variable headers contains value of

readMilis

protected float readMilis

variable readMilis contains value of

readBytes

protected float readBytes

variable readBytes contains value of

one_byte

protected byte[] one_byte

Variable one_byte is an array of one byte capasity. All reading should be performed with one method becouse of problems with different encodings during http transmision. So it is easier to do all necessary calculations in one place.
The use of this variable is not essential, however may significantly improve work of read() method.

chunk_size

protected int chunk_size

variable chunk_size contains value of current chunk size in bytes.

bytes_read

protected int bytes_read

variable bytes_read contains value of bytes already read for current chunk.

Constructor Detail

HTTPInputStream

public HTTPInputStream(java.io.InputStream in)

Creates a new HTTPInputStream instance.

Parameters:

in - an InputStream value

Method Detail

read

public int read()
         throws java.io.IOException

read method performs

Overrides:

read in class java.io.FilterInputStream

Returns:

an int value

Throws:

java.io.IOException - if an error occurs

read

public int read(byte[] b)
         throws java.io.IOException

read method performs

Overrides:

read in class java.io.FilterInputStream

Parameters:

b - a byte[] value

Returns:

an int value

Throws:

java.io.IOException - if an error occurs

read

public int read(byte[] b,
                int off,
                int len)
         throws java.io.IOException

read method performs

Overrides:

read in class java.io.FilterInputStream

Parameters:

b - a byte[] value

off - an int value

len - an int value

Returns:

an int value

Throws:

java.io.IOException - if an error occurs

readBinary

protected int readBinary(byte[] b,
                         int off,
                         int len)
                  throws java.io.IOException

readBinary method performs

Parameters:

b - a byte[] value

off - an int value

len - an int value

Returns:

an int value

Throws:

java.io.IOException - if an error occurs

readChunked

protected int readChunked(byte[] b,
                          int off,
                          int len)
                   throws java.io.IOException

readChunked method streams chunked data from http server.

Parameters:

b - a byte[] is buffer for storing received data.

off - an int is offset in buffer where to start storing received data.

len - an int is expected data size which should be stored in given buffer.

Returns:

an int returns bytes count stored in given buffer.

Throws:

java.io.IOException - if an error occurs during reading data from stream.

readNextChunkSize

protected int readNextChunkSize()
                         throws java.io.IOException

readNextChunkSize method performs

Returns:

an int value

Throws:

java.io.IOException - if an error occurs

getAllHeaders

protected java.util.HashMap getAllHeaders()
                                   throws java.io.IOException

getAllHeaders method performs

Returns:

a HashMap value

Throws:

java.io.IOException - if an error occurs

deb

protected void deb(java.lang.String str)

deb method performs

Parameters:

str - a String value

raw

protected void raw(java.lang.String str)

raw method performs

Parameters:

str - a String value

isDebug

public boolean isDebug()

Get the value of debug.

Returns:

value of debug.

setDebug

public void setDebug(boolean v)

Set the value of debug.

Parameters:

v - Value to assign to debug.