This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
> I am not able to connect to the satellite servers in the IDV. This started > yesterday, and it continues today. This is happening with all of the > satellite servers. I am getting two types of error messages when trying to > access the satellite servers. I get one type of error when I click > "connect", and at other times, I get the other type of error when I click > "connect". I get these two types of error messages: > > FIRST ERROR MESSAGE: > > Connecting to server:adde.ucar.edu > Connection timed out: connect Hi Michael, I did not see any problem in my side, the ADDE.UCAR.EDU is running when I tested it. In the future, you can also try to connect to atm.ucar.edu. The previous one is running on an old machine, and the later one is supposed to be more powerful and reliable. Yuan > > In this error message, when I click on "Show Details", I get this: > > java.net.ConnectException: Connection timed out: connect > at java.net.DualStackPlainSocketImpl.connect0(Native Method) > at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) > at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) > at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) > at java.net.AbstractPlainSocketImpl.connect(Unknown Source) > at java.net.PlainSocketImpl.connect(Unknown Source) > at java.net.SocksSocketImpl.connect(Unknown Source) > at java.net.Socket.connect(Unknown Source) > at java.net.Socket.connect(Unknown Source) > at java.net.Socket.<init>(Unknown Source) > at java.net.Socket.<init>(Unknown Source) > at > edu.wisc.ssec.mcidas.adde.AddeURLConnection.connect(AddeURLConnection.java:644) > at > edu.wisc.ssec.mcidas.adde.AddeURLConnection.getInputStream(AddeURLConnection.java:819) > at > ucar.unidata.idv.chooser.adde.AddeChooser.checkIfServerIsOk(AddeChooser.java:1187) > at > ucar.unidata.idv.chooser.adde.AddeChooser.canAccessServer(AddeChooser.java:1230) > at > ucar.unidata.idv.chooser.adde.AddeImageChooser.connectToServer(AddeImageChooser.java:802) > at > ucar.unidata.idv.chooser.adde.AddeImageChooser.handleConnect(AddeImageChooser.java:634) > at > ucar.unidata.idv.chooser.adde.AddeChooser.handleConnectFromThread(AddeChooser.java:600) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at ucar.unidata.util.Misc$2.run(Misc.java:1215) > at ucar.unidata.util.Misc$3.run(Misc.java:1243) > > SECOND ERROR MESSAGE: > > Connecting to server:adde.ssec.wisc.edu > java.io.EOFException > > When I click on "Show Details" in this error message, I get this: > > ava.io.EOFException > at java.util.zip.GZIPInputStream.readUByte(Unknown Source) > at java.util.zip.GZIPInputStream.readUShort(Unknown Source) > at java.util.zip.GZIPInputStream.readHeader(Unknown Source) > at java.util.zip.GZIPInputStream.<init>(Unknown Source) > at java.util.zip.GZIPInputStream.<init>(Unknown Source) > at > edu.wisc.ssec.mcidas.adde.AddeURLConnection.connect(AddeURLConnection.java:744) > at > edu.wisc.ssec.mcidas.adde.AddeURLConnection.getInputStream(AddeURLConnection.java:819) > at > ucar.unidata.idv.chooser.adde.AddeChooser.checkIfServerIsOk(AddeChooser.java:1187) > at > ucar.unidata.idv.chooser.adde.AddeChooser.canAccessServer(AddeChooser.java:1230) > at > ucar.unidata.idv.chooser.adde.AddeImageChooser.connectToServer(AddeImageChooser.java:802) > at > ucar.unidata.idv.chooser.adde.AddeImageChooser.handleConnect(AddeImageChooser.java:634) > at > ucar.unidata.idv.chooser.adde.AddeChooser.handleConnectFromThread(AddeChooser.java:600) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at ucar.unidata.util.Misc$2.run(Misc.java:1215) > at ucar.unidata.util.Misc$3.run(Misc.java:1243) > > Ticket Details =================== Ticket ID: LID-670913 Department: Support IDV Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.