Error in generating Cloud Endpoint Library (Google App Engine)

[GoogleCodeExporter]

What steps will reproduce the problem?

I created a new App engine Connected Android Project and completed through the 
whole wizard.
I wanted to run the Hello World project (which is automatically generated)
Everything worked well, but eclipse is not resolving the following imports 

Class GCMIntentService.java :
import deviceinfoendpoint.Deviceinfoendpoint;
import deviceinfoendpoint.DeviceInfo;

Class RegisterActivity.java
import messageEndpoint.MessageEndpoint;
import messageEndpoint.CollectionResponseMessageData;
import messageEndpoint.MessageData;

To resolve this issue, I had gone through the related questions on 
stackoverflow.com, but neither helped me out.

I tried generating the Cloud Endpoint libraries manually, but it was also not 
successful.

What is the expected output? What do you see instead?

Expected output is that, the GPE must automatically generate the Cloud Endpoint 
libraries, but it is not doing so.
The manual generation of Cloud Endpoint libraries should work out without any 
issues, but it is giving many problems.

What version of the product are you using? On what operating system?
Eclipse Version: Juno, Service Release 1 Build id: 20120920-0800
GPE : 3.2.3
ADT Plugin : 21.0.1
Google App Engine SDK : 1.8.0
OS : Windows 8 Pro (Build 9200)

Please provide any additional information below.

Exception Stack Trace while generating Cloud Endpoint libraries manually
eclipse.buildId=M20120914-1800
java.version=1.7.0_17
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_IN
Framework arguments:  -product org.eclipse.epp.package.jee.product -product 
org.eclipse.epp.package.jee.product
Command-line arguments:  -os win32 -ws win32 -arch x86 -product 
org.eclipse.epp.package.jee.product -data C:\Users\Adesh\GAE New -product 
org.eclipse.epp.package.jee.product

Error
Sun Jun 02 14:10:17 IST 2013
Unexpected Exception

java.lang.reflect.InvocationTargetException
    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 com.google.gdt.eclipse.appengine.swarm.wizards.helpers.SwarmApiCreator.generateAndWriteDiscovery(SwarmApiCreator.java:262)
    at com.google.gdt.eclipse.appengine.swarm.wizards.helpers.SwarmApiCreator.createClientLibFromApiConfig(SwarmApiCreator.java:79)
    at com.google.gdt.eclipse.appengine.swarm.wizards.helpers.SwarmApiCreator.createSwarmApi(SwarmApiCreator.java:212)
    at com.google.gdt.eclipse.appengine.swarm.wizards.helpers.SwarmServiceCreator.create(SwarmServiceCreator.java:475)
    at com.google.gdt.eclipse.appengine.swarm.wizards.GenerateSwarmApiAction$1.run(GenerateSwarmApiAction.java:84)
    at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
    at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
    at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:507)
    at com.google.gdt.eclipse.appengine.swarm.wizards.GenerateSwarmApiAction.run(GenerateSwarmApiAction.java:80)
    at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
    at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
    at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
    at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1029)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:923)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:588)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:543)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
    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 org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: java.net.UnknownHostException: webapis-discovery.appspot.com
    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 sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
    at sun.net.NetworkClient.doConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(Unknown Source)
    at com.google.appengine.repackaged.com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:78)
    at com.google.appengine.repackaged.com.google.api.client.http.HttpRequest.execute(HttpRequest.java:891)
    at com.google.api.server.spi.tools.CloudDiscoveryDocGenerator.postRequest(CloudDiscoveryDocGenerator.java:74)
    at com.google.api.server.spi.tools.CloudDiscoveryDocGenerator.generateDiscoveryDoc(CloudDiscoveryDocGenerator.java:55)
    ... 42 more

Original issue reported on code.google.com by adeshato...@gmail.com on 2 Jun 2013 at 9:05

[GoogleCodeExporter]

We looked at the service, and it did not go down over the weekend - are you 
still seeing this problem?

Original comment by rdayal@google.com on 4 Jun 2013 at 11:36

[GoogleCodeExporter]

Original comment by rdayal@google.com on 7 Jun 2013 at 10:05

• Changed state: Invalid

[GoogleCodeExporter]

I have the same problem too... 

Original comment by andrea.b...@gmail.com on 9 Nov 2013 at 11:10

[GoogleCodeExporter]

m also having the same problem...

Original comment by abhishek...@gmail.com on 16 May 2014 at 8:57

[GoogleCodeExporter]

Same problem

Original comment by savanted...@gmail.com on 26 Feb 2015 at 3:11