Problem in launching webstart application when using version atribute

Question

Hello Experts,
I am trying out my first example of JNLP. This is my JNLP file.
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8092/webApplForWebStart" href="launch.jnlp">
    <information>
        <title>ForWebStart2</title>
        <vendor>NAgrawal</vendor>
        <description>ForWebStart2</description>
        <description kind="short">ForWebStart2</description>
        <homepage href=""/>
        <offline-allowed/>
        <shortcut online="true">
          <!-- create desktop shortcut -->
          <desktop/>
          <menu submenu="WebStart Trial"/>
     </shortcut>
    </information>
    <security>
        <all-permissions/>
    </security>
    <resources>
        <j2se version="1.5+"/>
        <jar href="JNLPTime.jar" version="1.0" main="true" download="eager"/>
    </resources>
    <application-desc main-class="TheTime">
    </application-desc>
</jnlp>My Problem is if I remove version="1.0" from <jar > tag application is launching properly. But if I am using version attribute , it is giving me this error while launching the application.
"Unable to load resource :( http://localhost:8092/webApplForWebStart/JNLPTime.jar , 1.0)
java.io.IOException : missing version response from server."
I can't afford to remove the version attribute as it is required for auto-update. Has anyone ever tried faced such problem.? Please help me. Any help is highly appreciated.Thanks in advance.

Answer 1

It's just as told.
If you're using explicit versions, the server response MUST provide an header to tell which version is returned (you could be using 'wildcards' like 1+).
How are you serving requests? Are you using JnlpDownloadServlet? If so, check docs: extra work is required in order to use version features.
If using your own service google for header (and parameter) name, use exact versions and copy to the response the value you're retrieving from the request.
Bye.