java - Applet does not cache jar files -

i'm having issues identifying why few heavy .jar files not being cached @ client side.

the applet runs fine, lazy-downloads heavy jar libs on every run (specifically aws-java-sdk , xuggler)

the applet:

is applied html dom javascript

<applet archive="myscreencast.jar" code="srcapplet.class" codebase="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/" height="50" width="130">   <param name="cache_archive" value="lib/swing-layout-1.0.4.jar, lib/slf4j-api-1.6.4.jar, lib/slf4j-jcl-1.6.4.jar, lib/xuggle-xuggler-noarch-5.4.jar, lib/aws-java-sdk-1.4.0.jar, lib/commons-codec-1.3.jar, lib/commons-logging-1.1.1.jar, lib/httpclient-4.1.1.jar, lib/httpcore-4.1.jar, lib/xuggle-xuggler-arch-x86_64-w64-mingw32.jar, lib/xuggle-xuggler-arch-x86_64-xuggle-darwin11.jar, lib/xuggle-xuggler-arch-x86_64-pc-linux-gnu.jar">   <param name="cache_version" value="1.0, 1.4.0, 1.3, 1.1.1, 4.1.1, 4.1, 1.6.4, 5.4.0">   <param name="jnlp_href" value="http://beta.remoting.io/screencasts/118/launch.jnlp">   <param name="outputfilename" value="filename.mp4">   <param name="token" value="secrettoken">   <param name="image" value="http://djebp0fi6w5vu.cloudfront.net/assets/ajax-loader-40b35ac3503bcb1279f0851d57d2b62a.gif">   <param name="name" value="myscreencast"> </applet> 

launch.jnlp

headers:

http/1.1 200 ok cache-control: max-age=0, private, must-revalidate content-type: application/x-java-jnlp-file; charset=utf-8 date: thu, 18 apr 2013 06:51:43 gmt etag: "0acc9670f5347a89063c1ad76ba6a931" status: 200 ok x-rack-cache: miss x-request-id: b26b35dc9b336fd42da4f2bf0403b58c x-runtime: 0.261893 x-ua-compatible: ie=edge,chrome=1 connection: keep-alive 

response:

<?xml version="1.0" encoding="utf-8" standalone="no"?> <jnlp href="/screencasts/118/launch.jnlp" spec="1.0+">   <information>       <title>myscreencast</title>       <vendor>dotg</vendor>       <homepage href="/screencasts/118/launch.html"/>       <description>myscreencast</description>       <description kind="short">myscreencast</description>   </information>   <update check="always"/>   <security>     <all-permissions/>   </security>   <resources>     <j2se java-vm-args="-djava.security.policy=http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/applet.policy" version="1.6+"/>     <jar href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/myscreencast.jar" main="true"/>       <resources arch="x86_64" os="windows">           <nativelib href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/xuggle-xuggler-arch-x86_64-w64-mingw32.jar"/>       </resources>       <resources arch="x86_64" os="mac os x">           <nativelib href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/xuggle-xuggler-arch-x86_64-xuggle-darwin11.jar"/>       </resources>       <resources arch="x86_64" os="linux">           <nativelib href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/xuggle-xuggler-arch-x86_64-pc-linux-gnu.jar"/>       </resources>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/swing-layout-1.0.4.jar"/>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/slf4j-api-1.6.4.jar"/>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/slf4j-jcl-1.6.4.jar"/>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/xuggle-xuggler-noarch-5.4.jar"/>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/aws-java-sdk-1.4.0.jar"/>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/commons-codec-1.3.jar"/>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/commons-logging-1.1.1.jar"/>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/httpclient-4.1.1.jar"/>       <jar download="lazy" href="http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/httpcore-4.1.jar"/>   </resources>   <applet-desc height="32" main-class="com.dotg.screencast.scrapplet" name="myscreencast" width="32">     <param name="token" value="secrettoken"/>     <param name="outputfilename" value="somefilename.mp4"/>   </applet-desc> </jnlp> 

.jar files

header:

$ curl -i http://s3.amazonaws.com/remoting-io-cdn/recorder/v3/lib/aws-java-sdk-1.4.0.jar http/1.1 200 ok x-amz-id-2: +vvx4kaqf4o+aq+tdzllcy8amxcaytp739zcttwyfxryk3ljgg9xnz0nertt8+cu x-amz-request-id: d16687ef72e5f892 date: thu, 18 apr 2013 18:17:12 gmt cache-control: public, max-age=31557600 last-modified: thu, 18 apr 2013 13:18:48 gmt etag: "f577609185df722d54e85b822dbd043c" accept-ranges: bytes content-type: application/x-java-archive content-length: 10293926 server: amazons3 

why .jar files not cached?

javaws has options investigate caching.

in particular, run javaws -viewer

java web start: usage:  javaws [run-options] <jnlp-file>         javaws [control-options]  run-options include:   -verbose          display additional output   -offline          run application in offline mode   -system           run application system cache   -xnosplash        run without showing splash screen   -j<option>        supply option vm   -wait             start java process , wait exit  control-options include:   -viewer           show cache viewer in java control panel   -clearcache       remove non-installed applications cache   -uninstall        remove applications cache   -uninstall <jnlp-file>                remove application cache   -import [import-options] <jnlp-file>  import application cache  import-options include:   -silent           import silently (with no user interface)   -system           import application system cache   -codebase <url>   retrieve resources given codebase   -shortcut         install shortcuts if user allowed prompt   -association      install associations if user allowed prompt