[Bug 1147] New: wrongly assume DNS avaible even behind a proxy

[bugzilla-daemon at icedtea.classpath.org]

http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=1147

          Priority: P3
            Bug ID: 1147
                CC: unassigned at icedtea.classpath.org
          Assignee: omajid at redhat.com
           Summary: wrongly assume DNS avaible even behind a proxy
          Severity: major
    Classification: Unclassified
                OS: Linux
          Reporter: jeromerobert at gmx.com
          Hardware: x86_64
            Status: NEW
           Version: unspecified
         Component: NetX (javaws)
           Product: IcedTea-Web

Created attachment 746
  --> http://icedtea.classpath.org/bugzilla/attachment.cgi?id=746&action=edit
Disable online check with DNS query

When try to use icedtea-web behind my corporate proxy I get the following
error:
java version "1.6.0_24"
OpenJDK Runtime Environment (IcedTea6 1.11.3) (6b24-1.11.3-2)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)
File cannot be launched because offline-allowed tag not specified and system
currently offline.
java.lang.NullPointerException
    at net.sourceforge.jnlp.NetxPanel.runLoader(NetxPanel.java:154)
    at sun.applet.AppletPanel.run(AppletPanel.java:380)
    at java.lang.Thread.run(Thread.java:679)
java.lang.NullPointerException
    at sun.applet.AppletPanel.run(AppletPanel.java:430)
    at java.lang.Thread.run(Thread.java:679)


Looking at
http://icedtea.classpath.org/hg/icedtea-web/annotate/dbc6a336b087/netx/net/sourceforge/jnlp/Launcher.java#205
I can see that icedtea-web assume that "no name resolution" mean "offline".
It's wrong when using a proxy.

The attached patch is a workaround which work for me. If it's really necessary
to check for "onlineness" so early I guess it would be better to do something
like "if not offlineAllowed and noDNS and noProxy then ...".

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