Jar download not working over dial up

Question

Hey,
Our webstart application works just fine while connected to the lan at work. The various jars required by the application are downloaded without any problems.
However, when I try to access the same application over dial up (I have tried netzero and aol), the jar download fails in a rather weird fashion.
On clicking on the link for the application, the main jar e.g. main-application.jar downloads just fine, but the next jar in line fails with the following message
Unable to load resource: https://server.com:443/application/lib/axis.jar
Exception
JNLPException[category: Download Error : Exception: java.net.SocketException: Unexpected end of file from server : LaunchDesc: null ]
     at com.sun.javaws.cache.DownloadProtocol.doDownload(Unknown Source)
     at com.sun.javaws.cache.DownloadProtocol.getResource(Unknown Source)
     at com.sun.javaws.LaunchDownload.downloadJarFiles(Unknown Source)
     at com.sun.javaws.LaunchDownload.downloadEagerorAll(Unknown Source)
     at com.sun.javaws.Launcher.downloadResources(Unknown Source)
     at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
     at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Wrapped Exception
java.net.SocketException: Unexpected end of file from server
     at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
     at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
     at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
     at java.net.HttpURLConnection.getResponseCode(Unknown Source)
     at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
     at com.sun.javaws.net.BasicNetworkLayer.doRequest(Unknown Source)
     at com.sun.javaws.net.BasicNetworkLayer.doGetRequest(Unknown Source)
Now, when i click on the application launch again, it proceeds to download the next jar e.g axis.jar in this case without a problem, but it will fail on the next jar
snippet from my jnlp file
<jar href="application.jar"/>
<jar href="lib/axis.jar"/>
<jar href="lib/castor-0.9.5.2-xml.jar"/>
<jar href="lib/commons-beanutils-1.5.jar"/>
<jar href="lib/commons-collections-2.1.jar"/>     
Note : All of this works fine when im not using dial up to connect.
Does anyone have any ideas ?
Any help is greatly appreciated

Answer 1

pboeykens,
It may definitely be something with my network and/or firewall configuration. I'm just not sure where to look yet.
I have tried modifying apache settings to no avail.
I've tried turning KeepAlives off, changing the keep alive timeout and the max number of keep alives allowed on apache, but none of these setting changes had any effect on the jar download.
If you have any suggestions for what I might look at as far as my firewall settings, then I can take that to my security department.
My next step is to try and enable the debug logging with webstart to maybe get a better idea of why it thinks that no jar is available.
Thanks