Without the messages on the deployment console explaining why it did not work, it is very hard to help you.
Are you deploying your apps using the Google Eclipse plugin, the App Engine web interface or some other tool? In each case, you should be able to see the messages on the deployment console. In the case of Eclipse, the messages come to the standard console view.
In case you have not read them, there is some documentation about using Vaadin on GAE in
the wiki and
the book .
Unable to update:
java.net.UnknownHostException: appengine.google.com
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(Unknown Source)
at com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.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.(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.tools.admin.ServerConnection.connect(ServerConnection.java:340)
at com.google.appengine.tools.admin.ServerConnection.send(ServerConnection.java:133)
at com.google.appengine.tools.admin.ServerConnection.post(ServerConnection.java:82)
at com.google.appengine.tools.admin.AppVersionUpload.send(AppVersionUpload.java:559)
at com.google.appengine.tools.admin.AppVersionUpload.beginTransaction(AppVersionUpload.java:376)
at com.google.appengine.tools.admin.AppVersionUpload.doUpload(AppVersionUpload.java:111)
at com.google.appengine.tools.admin.AppAdminImpl.update(AppAdminImpl.java:56)
at com.google.appengine.eclipse.core.proxy.AppEngineBridgeImpl.deploy(AppEngineBridgeImpl.java:271)
at com.google.appengine.eclipse.core.deploy.DeployProjectJob.runInWorkspace(DeployProjectJob.java:145)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
I assumed that the problem could be related to proxy but then i used a wireless network and still have the same problem , i followed the steps on " Google AppEngine How To " but i got nothing.
my IDE is Eclipse Galileo and i installed all the necessary plug’ns
Based on the message, this must be network related.
Are you able to access
http://appengine.google.com/ with a browser on the same computer? With the same proxy (if any)?
Also check the Eclipse proxy settings (and any Java proxy settings you may have configured through environment variables etc.) in case they differ from your browser settings.