I guess that would be CGI.HTTP_ACCEPT_ENCODING.
P.
-----Original Message-----
From: Peter Stolz [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, December 19, 2000 10:30 PM
To: [EMAIL PROTECTED]
Subject: RE: [Compress HTML output]
This is great!
One question though:
The servlet version checks for the ACCEPT_ENCODING request header before it
does the actual encoding.
I don't know of a way to do this in CF. Any ideas?
P.
-----Original Message-----
From: Orlando Correa (ITSC) [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, December 19, 2000 9:58 AM
To: CF-Talk
Subject: RE: [Compress HTML output]
Hey Zach...
After some testing... I implemented your code to test compression of a
particularly large html file with some encouraging results... The
uncompressed page was 165K and took 391 milliseconds to excute. The
compressed page is 20K with an added server overhead of around 375K
milliseconds... The savings in download time for the html, in this case,
warrent further explortion of compressing certain "heavy" pages (87.8%
compression on level 7). Thanks dude! Pretty slick.
I've hacked on your code a bit to test it in our development enviornment...
<cfif ThisTag.ExecutionMode EQ "Start">
<cfset start_time=gettickcount()>
</cfif>
<cfif ThisTag.ExecutionMode EQ "END">
<!--- Sane defaults: --->
<cfparam name="Attributes.Level" default="9">
<cfparam name="Attributes.Unique" default="#RandRange(1,10000000)#">
<cfparam name="Attributes.Directory" default="c:\temp">
<!--- set temp dir --->
<cfset dir_compress = Attributes.Directory>
<cfif not IsDefined("application.IsDir")>
<!--- check if the directory exists --->
<cfdirectory name="qry_checkdir" directory="#dir_compress#"
action="LIST">
<!--- if it doesn't exist, create new directory #dir_compress# --->
<cfif not qry_checkdir.recordcount>
<cfdirectory action="CREATE" directory="#dir_compress#">
</cfif>
<!--- set IsDir flag for by-passing directory check --->
<cflock scope="application" timeout="10">
<cfset application.IsDir = 1>
</cflock>
</cfif>
<!--- Setup path & filename for tempfiles: --->
<cfset RawHTMLFile =
"#dir_compress##listlast(cgi.script_name,"/")#_#Attributes.Unique#_#RandRang
e(1,1000000)#.out">
<cfset GZippedFile =
"#dir_compress##listlast(cgi.script_name,"/")#_#Attributes.Unique#_#RandRang
e(1,1000000)#.in">
<!--- Grab the generated content and write it out to a tempfile.--->
<cfset end_time=gettickcount()>
<cfset time = end_time-start_time & "Milliseconds">
<cfset Content = Trim(ThisTag.GeneratedContent) & time>
<cffile action="WRITE" file="#RawHTMLFile#" output="#Content#">
<!--- Compress the tempfile to another tempfile --->
<cfx_GZip action="GZIP" InFile="#RawHTMLFile#" OutFile="#GZippedFile#"
level="#Attributes.Level#">
<cffile action="delete" file="#RawHTMLFile#">
<!--- Setup the headers and write the mess back out to the client
w/CFCONTENT --->
<cfset ThisTag.GeneratedContent = "">
<cfheader name="Content-Encoding" value="gzip">
<cfcontent file="#GZippedFile#" deletefile="Yes" type="text/html">
</cfif>
-----Original Message-----
From: Zachary Bedell [mailto:[EMAIL PROTECTED]]
Sent: Monday, December 18, 2000 2:20 PM
To: CF-Talk
Subject: RE: [Compress HTML output]
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
> compression is a web server issue NOT CF.
That's true, but it doesn't mean you can't do it in CF...
Below is a custom tag that will do just that, provided you have
CFX_GZip installed (freely downloadable from the tag gallery).
I'm not sure whether the savings in bandwidth is worth the additional
processor power (anyone wanna run tests?), but it's still nifty...
One place this would really be a savings: If you already use
CFCACHE, you should be able to modify the CFCache tag to also do
compression before it saves a file. That way you only need to
compress the file once, and you get the processor savings of CFCache
AND the bandwidth savings of compression.
I'll probably post this tag to the tag gallery once I beat on it for
a little longer. In the meantime, enjoy...
-----BEGIN PGP SIGNATURE-----
Version: PGPfreeware 6.5.8 for non-commercial use <http://www.pgp.com>
Comment: Please use PGP!
iQA/AwUBOj5/Z6vhLS1aWPxeEQKSRwCg+iRBf/fA8Y72IbopUMF0kM6NEkkAnj+k
wwQDQrb5RkIfgaFn1TRaW8Ub
=4/Jb
-----END PGP SIGNATURE-----
<!--- CF_GZipPage
Make sure this tag surrounds the ENTIRE page. It will GZIP the
GeneratedContent using
CFX_GZip and modify the browser headers so that the browser can
decode it.
Anything that falls outside of the start and end tag for this
tag
will be ignored and never
seen by the client.
Parameters (All are optional):
Level: The GZip Compression Level, 0 is lowest
compression
(biggest size, least processor usage),
9 is highest compression (smallest size,
greatest
processor usage)
Unique: If you'd prefer something more unique than a
second
random number for tempfiles, specify it here
Make sure the contents of the variable are all
valid
in a filename.
CopyLeft 2000 Zachary Bedell <[EMAIL PROTECTED]>
You may use this code as you wish provided I retain credit in
the
comments or elsewhere.
No Warrenty. If it breaks, you get to keep both pieces....
-ZSB 18-Dec-2000
--->
<cfif ThisTag.ExecutionMode EQ "END">
<!--- Sane defaults: --->
<cfparam name="Attributes.Level" default="9">
<cfparam name="Attributes.Unique"
default="#RandRange(1,10000000)#">
<!--- Setup path & filename for tempfiles: --->
<cfset RawHTMLFile =
"c:\Temp\Compress\#Cgi.Script_Name#_#Attributes.Unique#_#RandRange(1,100
0000
)#.out">
<cfset GZippedFile =
"c:\Temp\Compress#Cgi.Script_Name#_#Attributes.Unique#_#RandRange(1,1000
000)
#.in">
<!--- Grab the generated content and write it out to a tempfile.
--->
<cfset Content = Trim(ThisTag.GeneratedContent)>
<cffile action="WRITE" file="#RawHTMLFile#" output="#Content#">
<!--- Compress the tempfile to another tempfile --->
<cfx_GZip action="GZIP" InFile="#RawHTMLFile#"
OutFile="#GZippedFile#" level="#Attributes.Level#">
<cffile action="delete" file="#RawHTMLFile#">
<!--- Setup the headers and write the mess back out to the
client w/
CFCONTENT --->
<cfset ThisTag.GeneratedContent = "">
<cfheader name="Content-Encoding" value="gzip">
<cfcontent file="#GZippedFile#" deletefile="Yes"
type="text/html">
</cfif>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/[email protected]/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
