org.jboss.netty.handler.codec.http
Class HttpContentCompressor

java.lang.Object
  org.jboss.netty.channel.SimpleChannelHandler
      org.jboss.netty.handler.codec.http.HttpContentEncoder
          org.jboss.netty.handler.codec.http.HttpContentCompressor

All Implemented Interfaces:

ChannelDownstreamHandler, ChannelHandler, ChannelUpstreamHandler

public class HttpContentCompressor
extends HttpContentEncoder

Compresses an HttpMessage and an HttpChunk in gzip or deflate encoding while respecting the "Accept-Encoding" header. If there is no matching encoding, no compression is done. For more information on how this handler modifies the message, please refer to HttpContentEncoder.

Version:

$Rev: 2121 $, $Date: 2010-02-02 09:38:07 +0900 (Tue, 02 Feb 2010) $

Author:

The Netty Project, Trustin Lee

Nested Class Summary

Nested classes/interfaces inherited from interface org.jboss.netty.channel.ChannelHandler

ChannelHandler.Sharable

Constructor Summary

HttpContentCompressor()
Creates a new handler with the default compression level (6).

HttpContentCompressor(int compressionLevel)
Creates a new handler with the specified compression level.

Method Summary

protected String	getTargetContentEncoding(String acceptEncoding) Returns the expected content encoding of the encoded content.
protected EncoderEmbedder<ChannelBuffer>	newContentEncoder(String acceptEncoding) Returns a new EncoderEmbedder that encodes the HTTP message content.

Methods inherited from class org.jboss.netty.handler.codec.http.HttpContentEncoder

messageReceived, writeRequested

Methods inherited from class org.jboss.netty.channel.SimpleChannelHandler

bindRequested, channelBound, channelClosed, channelConnected, channelDisconnected, channelInterestChanged, channelOpen, channelUnbound, childChannelClosed, childChannelOpen, closeRequested, connectRequested, disconnectRequested, exceptionCaught, handleDownstream, handleUpstream, setInterestOpsRequested, unbindRequested, writeComplete

Methods inherited from class java.lang.Object

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

Constructor Detail

HttpContentCompressor

public HttpContentCompressor()

Creates a new handler with the default compression level (6).

HttpContentCompressor

public HttpContentCompressor(int compressionLevel)

Creates a new handler with the specified compression level.

Parameters:

compressionLevel - 1 yields the fastest compression and 9 yields the best compression. 0 means no compression. The default compression level is 6.

Method Detail

newContentEncoder

protected EncoderEmbedder<ChannelBuffer> newContentEncoder(String acceptEncoding)
                                                    throws Exception

Description copied from class: HttpContentEncoder

Returns a new EncoderEmbedder that encodes the HTTP message content.

Specified by:

newContentEncoder in class HttpContentEncoder

Parameters:

acceptEncoding - the value of the "Accept-Encoding" header

Returns:

a new EncoderEmbedder if there is a supported encoding in acceptEncoding. null otherwise.

Throws:

Exception

getTargetContentEncoding

protected String getTargetContentEncoding(String acceptEncoding)
                                   throws Exception

Description copied from class: HttpContentEncoder

Returns the expected content encoding of the encoded content.

Specified by:

getTargetContentEncoding in class HttpContentEncoder

Parameters:

acceptEncoding - the value of the "Accept-Encoding" header

Returns:

the expected content encoding of the new content

Throws:

Exception