The Channel API is not yet publicly launched. However, most of the DevAppServer support was in 1.3.5.
Here's a workaround if you want to test it out: Extract the "apphosting/tools/dev-channel-js.js" file from appengine-api-1.0-sdk-1.3.5.jar and move it to /_ah/channel/jsapi in your war directory (as if it were a static file). Your HTML should then use <script src="/_ah/channel/jsapi">. On Sat, Jul 24, 2010 at 2:39 PM, Daniel Guermeur <[email protected]>wrote: > Hello there, > > I am trying out the Channel API with my own project and the Google > demo app Dance Dance Robot. In both cases I get ApplicationError 2 > when trying to push a message. There is no doc but all libraries are > available in the lastest GAE release. Here is the error: > > com.google.appengine.api.channel.ChannelFailureException: An > unexpected error occurred. > Caused by: com.google.apphosting.api.ApiProxy$ApplicationException: > ApplicationError: 2: > > See trace below. > > What is ApplicationError2, how to fix it? > > Any help / pointer would be appreciated. > > Thanks. > Daniel > > SEVERE: Failed to push the message > com.metadot.book.stalkrapp.shared.mess...@1010a3b to client channel- > [email protected] > com.google.appengine.api.channel.ChannelFailureException: An > unexpected error occurred. > at > com.google.appengine.api.channel.ChannelServiceImpl.sendMessage(ChannelServ > iceImpl.java: > 59) > at > com.metadot.book.stalkrapp.server.PushServer.sendMessageToOneUser(PushServe > r.java: > 82) > at > com.metadot.book.stalkrapp.server.FriendsServiceImpl.getFriend(FriendsServi > ceImpl.java: > 283) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native > Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: > 39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp > l.java: > 25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime > .java: > 100) > at > com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java: > 562) > at > com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServi > ceServlet.java: > 188) > at > com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServi > ceServlet.java: > 224) > at > com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(Abstract > RemoteServiceServlet.java: > 62) > at javax.servlet.http.HttpServlet.service(HttpServlet.java: > 713) > at javax.servlet.http.HttpServlet.service(HttpServlet.java: > 806) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 511) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1166) > at > com.metadot.book.stalkrapp.server.servlets.LoginFilter.doFilter(LoginFilter > .java: > 31) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFi > lter.java: > 51) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Trans > actionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFile > Filter.java: > 122) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: > 388) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: > 216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: > 182) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: > 765) > at > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: > 418) > at > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEn > gineWebAppContext.java: > 70) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 152) > at > com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:349) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 152) > at org.mortbay.jetty.Server.handle(Server.java:326) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 542) > at org.mortbay.jetty.HttpConnection > $RequestHandler.content(HttpConnection.java:938) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java: > 755) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java: > 218) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java: > 404) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: > 409) > at org.mortbay.thread.QueuedThreadPool > $PoolThread.run(QueuedThreadPool.java:582) > Caused by: com.google.apphosting.api.ApiProxy$ApplicationException: > ApplicationError: 2: > at > com.google.appengine.api.channel.dev.LocalChannelService.sendChannelMessage > (LocalChannelService.java: > 91) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native > Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: > 39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp > l.java: > 25) > at java.lang.reflect.Method.invoke(Method.java:597) > at com.google.appengine.tools.development.ApiProxyLocalImpl > $AsyncApiCall.call(ApiProxyLocalImpl.java:305) > at com.google.appengine.tools.development.ApiProxyLocalImpl > $AsyncApiCall.call(ApiProxyLocalImpl.java:262) > at java.util.concurrent.Executors$PrivilegedCallable > $1.run(Executors.java:463) > at java.security.AccessController.doPrivileged(Native Method) > at java.util.concurrent.Executors > $PrivilegedCallable.call(Executors.java:460) > at java.util.concurrent.FutureTask > $Sync.innerRun(FutureTask.java:303) > at java.util.concurrent.FutureTask.run(FutureTask.java:138) > at java.util.concurrent.ThreadPoolExecutor > $Worker.runTask(ThreadPoolExecutor.java:886) > at java.util.concurrent.ThreadPoolExecutor > $Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:637) > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine-java%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
