RE: [flexcoders] Zlib Compression was Backend Choice...
Very useful So, for clarification, under what circumstances will the browser handle decompression of HTTP Compressed data, and when is it necessary to use ByteArray.compress/uncompress? Im under the impression that the Flash Player handles communication for the URLStream and Socket class and the browser handles other communications. Therefore, I would assume that the ByteArray methods would only be needed for URLStream and Socket Right? From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Ted Patrick Sent: Monday, August 28, 2006 10:30 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Zlib Compression was Backend Choice... Flash Player 9 supports direct use of zlib compression independent of the browser!!! flash.util.ByteArray.compress flash.util.ByteArray.uncompress You can retrieve a ByteArray from flash.net.URLStream and flash.net.Socket. These allow you to get a bytearray of data directly from any url or TCP based socket server. Some useful use patterns: ZLIB XML HTTP URLStream ByteArray.uncompress ByteArray.UTFReadBytes ZLIB SWF/GIF/JPG/PNG HTTP URLStream ByteArray.uncompress Loader.writeBytes( ByteArray.readBytes ) ZLIB AMF HTTP URLStream ByteArray.uncompress ByteArray.readObject ZLIB XML TCPSocket Socket ByteArray.uncompress ByteArray.UTFReadBytes ZLIB SWF/GIF/JPG/PNG TCPSocket Socket ByteArray.uncompress Loader.writeBytes( ByteArray.readBytes ) ZLIB AMF TCPSocket Socket ByteArray.uncompress ByteArray.readObject I explored all these patterns in depth during the evolution of AS3 AVM2 and Flash Player 9. I have some zlib tools in Python and some examples of these patterns. I will clean them up and post them to my blog. Cheers, Ted Patrick Flex Evangelist Adobe Systems Incorporated From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Tom Lee Sent: Wednesday, August 23, 2006 11:20 AM To: flexcoders@yahoogroups.com Subject: RE: [Junk E-Mail - LOW] [flexcoders] Re: Choice of backend systems - which provides Speaking of that Ive always wondered, is the gzip decompression handled by the browser, or by the Flash player? Ive assumed it was the browser (HTTP Compression, right?). That being the case, arent there some browsers which dont have gzip support, or are they all dead? __._,_.___ -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com SPONSORED LINKS Web site design development Computer software development Software design and development Macromedia flex Software development best practice YAHOO! GROUPS LINKS Visit your group "flexcoders" on the web. To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. __,_._,___
RE: [flexcoders] Zlib Compression was Backend Choice...
Tom,
if ( Browser supports GZIP compression HTTP Server
supports GZIP compression )
{
Flash Player will receive decompressed
HTTP data using any HTTP based service!
}
This applies to all HTTP/HTTPS based data transfer. Basically
the browser has the capability to decode GZIP before data is presented to the
player.
URLStream and Socket class support zlib compression independent of the browser
or network protocol in use. You can load data directly from FTP, SVN that is
zlib compressed and decompress in the Flash Player. You can also compress data
in the Flash Player and upload it to a server. Using zlib compression is wide
open in Flash Player.
Also most do not realize that AMF serialization and
deserialization are also added directly into ByteArray. You can read and write
AMF this easily.
import flash.utils.ByteArray;
//writing to ByteArray
var byteObj:ByteArray = new ByteArray();
byteObj.writeObject( new Array( Hello, 2, 3,
4, 5 ) );
trace( byteObj.length )
byteObj.writeObject( Hello Write Byte World );
// reading ByteArray
byteObj.position = 0
trace( byteObj.readObject() );
trace( byteObj.readObject() );
Its a brand new world folks! Have fun with direct
AMF data access within Flash Player 9 Network transfer of AMF data is orthogonal
to de/serialization in Flash Player 9. That is a major league change. Take a
deeper look at ByteArray there is a ton of real value in this class.
It is Mega-Mega-Useful
Cheers,
Ted Patrick
Flex Evangelist
Adobe Systems Incorporated
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Tom Lee
Sent: Monday, August 28, 2006 8:39
AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Zlib
Compression was Backend Choice...
Very useful
So, for clarification, under what circumstances will the browser
handle decompression of HTTP Compressed data, and when is it necessary to use
ByteArray.compress/uncompress? Im under the impression that
the Flash Player handles communication for the URLStream and Socket class and
the browser handles other communications. Therefore, I would assume that
the ByteArray methods would only be needed for URLStream and Socket
Right?
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