[IDV #IKJ-976237]: IDV - IDV fails to connect to any server.

["Unidata IDV Support" <support-idv@xxxxxxxxxxxxxxxx>]

Hi Samuel-

> I have added the last line to the following /etc/hosts file, but IDV still gives the same error:
> # Do not remove the following line, or various programs
> # that require network functionality will fail.
> ::1     EBE271-22LIN.cup.edu    EBE271-22LIN    localhost.localdomain   localhos
> t
> 127.0.0.1       localhost

Let me first say that we don't use IPV6 here, so in some cases I'm
making educated guesses based on knowledge of IPV4 and what I found
on Google.  And I'm assuming you are indeed set up to use IPV6 on
this machine.  The Java version that the IDV uses should handle
both IPV4 & IPV6.

I'm guessing that something still is not right in the /etc/hosts table
and that it is still failing on the first line.

- Was the first line added automatically or did you add it in manually?
Typically, I would expect it to be:

::1    localhost.localdomain    localhost

(with tabs between fields) and have the local name info
(EBE271-22LIN.cup.edu) be listed separately.  You could try
changing that, restarting you ethernet interface and seeing if
that works.

You could try to use the following.  Edit the runIDV script and insert
the property to prefer IPV4:

command="java -Xmx512m -Didv.enableStereo=false -Djava.net.preferIPv4Stack=true -jar ${dirname}/idv.jar $*"

to see if it will ignore the IPV6 line.

Give either (or both) of those a try and see if you get further.

Don Murray


> -----Original Message-----
> From: Unidata IDV Support [mailto:support-idv@xxxxxxxxxxxxxxxx]
> Sent: Tuesday, April 29, 2008 6:47 PM
> To: Zehel, Samuel
> Cc: support-idv@xxxxxxxxxxxxxxxx
> Subject: [IDV #IKJ-976237]: IDV - IDV fails to connect to any server.
> 
> Hi Samuel-
> 
> > Full Name: Samuel M. Zehel Jnr.
> > Email Address: zehel@xxxxxxx
> > Organization: California University of Pennsylvania
> > Package Version: 2.4 build date:2007-12-20 16:34 UTC
> > Operating System: Linux
> > Hardware: Java: home: /home/weatherctr/IDV_2.4/jre version: 1.5.0_11 j3d:1.3.1
> > Description of problem: Connecting to server:shu.cup.edu
> > EBE270-22LIN.cup.edu: EBE270-22LIN.cup.edu
> 
> It looks like something is wrong in your hosts table or your DNS server.
> At this point, it is trying to get the IP address of the localhost and
> is failing.  I can't do a DNS lookup on EBE270-22LIN.cup.edu.  Do you
> have a localhost entry set up in the hosts table?
> 
> Don Murray
> 
> > ******************
> > Stack trace:
> > java.net.UnknownHostException: EBE270-22LIN.cup.edu: EBE270-22LIN.cup.edu
> > at java.net.InetAddress.getLocalHost(InetAddress.java:1308)
> > at edu.wisc.ssec.mcidas.adde.AddeURLConnection.connect(AddeURLConnection.java:658)
> > at edu.wisc.ssec.mcidas.adde.AddeURLConnection.getInputStream(AddeURLConnection.java:786)
> > at ucar.unidata.idv.chooser.adde.AddeChooser.checkIfServerIsOk(AddeChooser.java:1168)
> > at ucar.unidata.idv.chooser.adde.AddeChooser.canAccessServer(AddeChooser.java:1211)
> > at ucar.unidata.idv.chooser.adde.AddeImageChooser.connectToServer(AddeImageChooser.java:778)
> > at ucar.unidata.idv.chooser.adde.AddeImageChooser.handleConnect(AddeImageChooser.java:613)
> > at ucar.unidata.idv.chooser.adde.AddeChooser.handleConnectFromThread(AddeChooser.java:600)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:585)
> > at ucar.unidata.util.Misc$2.run(Misc.java:983)
> > at ucar.unidata.util.Misc$3.run(Misc.java:1011)
> >
> >
> >
> 
> 
> Ticket Details
> ===================
> Ticket ID: IKJ-976237
> Department: Support IDV
> Priority: Normal
> Status: Open
> 
> 


Ticket Details
===================
Ticket ID: IKJ-976237
Department: Support IDV
Priority: Normal
Status: Open