cz.msebera.android.httpclient.client.entity

Class DeflateDecompressingEntity

java.lang.Object

cz.msebera.android.httpclient.entity.HttpEntityWrapper

cz.msebera.android.httpclient.client.entity.DeflateDecompressingEntity

All Implemented Interfaces:

HttpEntity

public class DeflateDecompressingEntity
extends HttpEntityWrapper

HttpEntityWrapper responsible for handling deflate Content Coded responses. In RFC2616 terms, deflate means a zlib stream as defined in RFC1950. Some server implementations have misinterpreted RFC2616 to mean that a deflate stream as defined in RFC1951 should be used (or maybe they did that since that's how IE behaves?). It's confusing that deflate in HTTP 1.1 means zlib streams rather than deflate streams. We handle both types in here, since that's what is seen on the internet. Moral - prefer gzip!

Since:

4.1

See Also:

GzipDecompressingEntity

Field Summary

Fields inherited from class cz.msebera.android.httpclient.entity.HttpEntityWrapper

wrappedEntity

Constructor Summary

Constructors

Constructor and Description
DeflateDecompressingEntity(HttpEntity entity) Creates a new DeflateDecompressingEntity which will wrap the specified HttpEntity.

Method Summary

Modifier and Type	Method and Description
java.io.InputStream	getContent() Returns a content stream of the entity.
Header	getContentEncoding() Obtains the Content-Encoding header, if known.
long	getContentLength() Tells the length of the content, if known.
void	writeTo(java.io.OutputStream outstream) Writes the entity content out to the output stream.

Methods inherited from class cz.msebera.android.httpclient.entity.HttpEntityWrapper

consumeContent, getContentType, isChunked, isRepeatable, isStreaming

Methods inherited from class java.lang.Object

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

Constructor Detail

DeflateDecompressingEntity

public DeflateDecompressingEntity(HttpEntity entity)

Creates a new DeflateDecompressingEntity which will wrap the specified HttpEntity.

Parameters:

entity - a non-null HttpEntity to be wrapped

Method Detail

getContentEncoding

public Header getContentEncoding()

Obtains the Content-Encoding header, if known. This is the header that should be used when sending the entity, or the one that was received with the entity. Wrapping entities that modify the content encoding should adjust this header accordingly.

Specified by:

getContentEncoding in interface HttpEntity

Overrides:

getContentEncoding in class HttpEntityWrapper

Returns:

the Content-Encoding header for this entity, or null if the content encoding is unknown

getContentLength

public long getContentLength()

Tells the length of the content, if known.

Specified by:

getContentLength in interface HttpEntity

Overrides:

getContentLength in class HttpEntityWrapper

Returns:

the number of bytes of the content, or a negative number if unknown. If the content length is known but exceeds Long.MAX_VALUE, a negative number is returned.

getContent

public java.io.InputStream getContent()
                               throws java.io.IOException

Returns a content stream of the entity. Repeatable entities are expected to create a new instance of InputStream for each invocation of this method and therefore can be consumed multiple times. Entities that are not repeatable are expected to return the same InputStream instance and therefore may not be consumed more than once.

IMPORTANT: Please note all entity implementations must ensure that all allocated resources are properly deallocated after the InputStream.close() method is invoked.

Specified by:

getContent in interface HttpEntity

Overrides:

getContent in class HttpEntityWrapper

Returns:

content stream of the entity.

Throws:

java.io.IOException - if the stream could not be created

See Also:

HttpEntity.isRepeatable()

writeTo

public void writeTo(java.io.OutputStream outstream)
             throws java.io.IOException

Writes the entity content out to the output stream.

IMPORTANT: Please note all entity implementations must ensure that all allocated resources are properly deallocated when this method returns.

Specified by:

writeTo in interface HttpEntity

Overrides:

writeTo in class HttpEntityWrapper

Parameters:

outstream - the output stream to write entity content to

Throws:

java.io.IOException - if an I/O error occurs