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hcr

gzip js

Hi.

1. problem with static-zip js

I want to static-zip xforms.js. I do that:

First, tranfrom xforms.js to xforms.js.gz with gzip.exe;

Second, replace xforms.js in oxf:/ops/javascript with xforms.js.gz;

Third, modify XHTMLHeadHandler.java, The result code like that,

scripts = {

...

//new ResourceConfig("/ops/javascript/xforms.js", null),
new ResourceConfig("/ops/javascript/xforms.js.gz", null),

...

}

End, compile OPS.

When I run OPS Example with My OPS, I receive a problem: js error. I find that Client don't download xforms.js.gz from Server. How can I do?

I just want to static-gzip js.

2. dynamic-gzip js

I use Tomcat 5.0 run OPS. I want to use dynamic-gzip with Tomcat. So I config server.xml of Tomcat like that:

<Connector
port="8080"

maxThreads="150"

        minSpareThreads="25" maxSpareThreads="75"
        enableLookups="false" redirectPort="8443" acceptCount="100"
        debug="0" connectionTimeout="20000"
        disableUploadTimeout="true"

        compression="on"
        compressionMinSize="2048"
        noCompressionUserAgents="gozilla, traviata"
        compressableMimeType="text/html,text/xml,text/css,text/javascript"
      />

But the performance is not upgrade. Why ? Do I config error?

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Erik Bruchez

Re: gzip js

Administrator

> 1. problem with static-zip js

> I want to static-zip xforms.js. I do that:
> First, tranfrom xforms.js to xforms.js.gz with gzip.exe;
> Second, replace xforms.js in oxf:/ops/javascript with xforms.js.gz;
> Third, modify XHTMLHeadHandler.java, The result code like that,
> scripts = {
> ...
> //new ResourceConfig("/ops/javascript/xforms.js", null),
> new ResourceConfig("/ops/javascript/xforms.js.gz", null),
> ...
> }
> End, compile OPS.
>
> When I run OPS Example with My OPS, I receive a problem: js error. I
> find that Client don't download xforms.js.gz from Server. How can I do?
> I just want to static-gzip js.

When sending gzipped content to a browser, some HTTP headers must be
present, otherwise the browser will just think that the content is
uncompressed JavaScript. In particular, you must have:

Content-Encoding: gzip

This is why, if you want to have pre-gzipped files, you should serve
them from an Apache web server, for example, where you can configure
that kind of headers easily.

I think that dynamically gzipping (as you try to do below) is easier
to setup. And you can do that with Tomcat or Apache.

> 2. dynamic-gzip js
> I use Tomcat 5.0 run OPS. I want to use dynamic-gzip with Tomcat. So
> I config server.xml of Tomcat like that:
> <Connector
> port="8080"
> maxThreads="150"
> minSpareThreads="25" maxSpareThreads="75"
> enableLookups="false" redirectPort="8443" acceptCount="100"
> debug="0" connectionTimeout="20000"
> disableUploadTimeout="true"
>
> compression="on"
> compressionMinSize="2048"
> noCompressionUserAgents="gozilla, traviata"
>

compressableMimeType="text/html,text/xml,text/css,text/javascript"
> />
>
> But the performance is not upgrade. Why ? Do I config error?

The configuration above looks about right. Can you use something like
tcpmon to see whether the JavaScript files are in fact gzipped? See:

https://tcpmon.dev.java.net/

-Erik

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http://www.orbeon.com/

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