Probleme mit Java-Applets bei Interzugang über einen Proxy

    Leider kann ich mit dem Firebird 0.6.1 dt. keine Java-Applets bei Internetzugang über einen Proxy (Squid) aufrufen http://www.heise.de/security/diens…ests/java.shtml

    Speichere ich die Dateien lokal ab, starten die Applets ohne Probleme.
    Anbei die Ausgaben der Java-Konsole.

    Hat jemand eine Idee ?

    Viele Grüße
    Oliver

    java.io.IOException: Server returned HTTP response code: 403 for URL: http://www.heise.de/security/diens…/tests/cube.jar

    at sun.net.http://www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at sun.plugin.net.protocol.http.HttpUtils.followRedirects(Unknown Source)
    at sun.plugin.cache.CachedJarLoader.download(Unknown Source)
    at sun.plugin.cache.CachedJarLoader.load(Unknown Source)
    at sun.plugin.cache.JarCache.get(Unknown Source)
    at sun.plugin.net.protocol.jar.CachedJarURLConnection.connect(Unknown Source)
    at sun.plugin.net.protocol.jar.CachedJarURLConnection.getJarFile(Unknown Source)
    at sun.misc.URLClassPath$JarLoader.getJarFile(Unknown Source)
    at sun.misc.URLClassPath$JarLoader.<init>(Unknown Source)
    at sun.misc.URLClassPath$3.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.misc.URLClassPath.getLoader(Unknown Source)
    at sun.misc.URLClassPath.getLoader(Unknown Source)
    at sun.misc.URLClassPath.getResource(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at sun.applet.AppletClassLoader.findClass(Unknown Source)
    at sun.plugin.security.PluginClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.applet.AppletClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.applet.AppletClassLoader.loadCode(Unknown Source)
    at sun.applet.AppletPanel.createApplet(Unknown Source)
    at sun.plugin.AppletViewer.createApplet(Unknown Source)
    at sun.applet.AppletPanel.runLoader(Unknown Source)
    at sun.applet.AppletPanel.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    Laden: Klasse Aktiv.class nicht gefunden
    java.lang.ClassNotFoundException: Aktiv.class
    at sun.applet.AppletClassLoader.findClass(Unknown Source)
    at sun.plugin.security.PluginClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.applet.AppletClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.applet.AppletClassLoader.loadCode(Unknown Source)
    at sun.applet.AppletPanel.createApplet(Unknown Source)
    at sun.plugin.AppletViewer.createApplet(Unknown Source)
    at sun.applet.AppletPanel.runLoader(Unknown Source)
    at sun.applet.AppletPanel.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    Laden: Klasse CubeApp.class nicht gefunden
    Caused by: java.io.IOException: open HTTP connection failed.
    at sun.applet.AppletClassLoader.getBytes(Unknown Source)
    at sun.applet.AppletClassLoader.access$100(Unknown Source)
    at sun.applet.AppletClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    ... 11 more
    java.lang.ClassNotFoundException: CubeApp.class
    at sun.applet.AppletClassLoader.findClass(Unknown Source)
    at sun.plugin.security.PluginClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.applet.AppletClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.applet.AppletClassLoader.loadCode(Unknown Source)
    at sun.applet.AppletPanel.createApplet(Unknown Source)
    at sun.plugin.AppletViewer.createApplet(Unknown Source)
    at sun.applet.AppletPanel.runLoader(Unknown Source)
    at sun.applet.AppletPanel.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
    Caused by: java.io.IOException: open HTTP connection failed.
    at sun.applet.AppletClassLoader.getBytes(Unknown Source)
    at sun.applet.AppletClassLoader.access$100(Unknown Source)
    at sun.applet.AppletClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    ... 11 more

    Insgesamt sieht das nach einem Problem im Zusammenspiel JRE/Squid aus. (also nix FB-spezifisches)
    Kann man Squid so konfigurieren, dass es Applets nicht cached sondern transparent wirkt für sowas? Mit nem transparenten Proxy dürfen die Probleme nicht auftreten, das cachen wird das Problem sein.

    Viele Grüße . . . Martin


    In a world without walls and fences, who needs windows and gates?
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    Kein Support per PN oder email!

    Das Problem lag wirklich am Squid. Der User-Agent der JVM ist unterschiedlich zum Firebird. Der Proxy hat diesen User-Agent nicht akzeptiert. Leider wurde diese Meldung nirgends angezeigt, da diese direkt an die JVM ging. Danke für den Hinweis :)