Appengine connected Android prj got 404 on mobile test

Question

I got my android+appengine application (endpoint) up and running, everything works fine on my local machine, so I decided to upload my appengine code so that I can try accessing data through the Android application directly on my mobile phone.

When I try to call to my appengine backend, I got 404 error.

On browser if I try to call for http://[myAppID].appspot.com/_ah/spi I get:

Error: HTTP method GET is not supported by this URL 

So the main serlvet is responding, what am I doing wrong??

(Permission for Internet granted!)

Thanks in advance!!

here's the code, this is executed inside an AsyncTask:

        Builder endpointBuilder = new Myendpoint.Builder(AndroidHttp.newCompatibleTransport(), new JacksonFactory(), new HttpRequestInitializer() {
            public void initialize(HttpRequest httpRequest) {
            }
        });

        Myendpoint endpoint = CloudEndpointUtils.updateBuilder(endpointBuilder).build();

        try {

            MyUsers result = endpoint.searchMyUser(params[0]).execute();

            return result.getItems().get(0);

        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }

This is the code inside CloudEnpointUtils (obviously LOCAL_ANDROID_RUN is set to false) :

public static <B extends GoogleClient.Builder> B updateBuilder(B builder) {
    if (LOCAL_ANDROID_RUN) {
        builder.setRootUrl(LOCAL_APP_ENGINE_SERVER_URL + "/_ah/api/");
    }
    // only enable GZip when connecting to remote server
    final boolean enableGZip = builder.getRootUrl().startsWith("https:");
    builder.setJsonHttpRequestInitializer(new JsonHttpRequestInitializer() {
        public void initialize(JsonHttpRequest jsonHttpRequest) {
            jsonHttpRequest.setEnableGZipContent(enableGZip);
        }
    });
    return builder;
}

I add the logcat for error:

10-04 11:40:22.770 W/System.err(13564): com.google.api.client.googleapis.json.GoogleJsonResponseException: 404 Not Found
10-04 11:40:22.770 W/System.err(13564): Not Found
10-04 11:40:22.775 W/System.err(13564):     at com.google.api.client.googleapis.services.GoogleClient.executeUnparsed(GoogleClient.java:279)
10-04 11:40:22.775 W/System.err(13564):     at com.google.api.client.http.json.JsonHttpRequest.executeUnparsed(JsonHttpRequest.java:207)
10-04 11:40:22.775 W/System.err(13564):     at com.appspot.api.services.myuserendpoint.Myuserendpoint$SearchMyUser.execute(Myuserendpoint.java:702)
10-04 11:40:22.775 W/System.err(13564):     at it.my.my.app.core.MyBusinessDelegate$MyUserGetter.doInBackground(MyBusinessDelegate.java:303)
10-04 11:40:22.775 W/System.err(13564):     at it.my.my.app.core.MyBusinessDelegate$MyUserGetter.doInBackground(MyBusinessDelegate.java:1)
10-04 11:40:22.780 W/System.err(13564):     at android.os.AsyncTask$2.call(AsyncTask.java:264)
10-04 11:40:22.780 W/System.err(13564):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
10-04 11:40:22.780 W/System.err(13564):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
10-04 11:40:22.780 W/System.err(13564):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
10-04 11:40:22.785 W/System.err(13564):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
10-04 11:40:22.785 W/System.err(13564):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
10-04 11:40:22.785 W/System.err(13564):     at java.lang.Thread.run(Thread.java:856)

EDIT: AppEngine DeployLog

------------ Deploying frontend ------------

 Preparing to deploy:
    Created staging directory at:  'C:\Users\XXXXXXXXX\AppData\Local\Temp\appcfg1884750854541661749.tmp'
    Scanning for jsp files.
    Compiling jsp files.
    Scanning files on local disk.
    Initiating update.
    Cloning 1 static files.
    Cloning 66 application files.

Deploying:
    Uploading 0 files.
    Initializing precompilation...
    Deploying new version.

Verifying availability:
    Will check again in 1 seconds.
    Will check again in 2 seconds.
    Will check again in 4 seconds.
    Closing update: new version is ready to start serving.

Updating datastore:
    Uploading index definitions.

Deployment completed successfully

EDIT2: other infos

I've tried to communicate with a java servlet I've put in appengine war, via browser there's no problem everything is working fine, if I try to ping from command line or try to communicate programmatically I have this error:

"Unable to resolve host "[myappID].appspot.com": No address associated with  hostname"

Please anybody help me find a solution

EDIT 3: Good news, I've been able to call my servlet using the appengine address with version that is:

http://[version].[myAppID].appspot.com/myServlet

instead of:

http://[myAppID].appspot.com/myServlet 

I don't know why but this way it'works! Still no luck trying to call remote appengine app via endpoint even using version-address trick, hope this help!

Answer 1

The root cause is that the version being used in your code is different from the app engine default version.

The app engine default version is deployed to: http://[appversion]-your-product-id.appspot.com The code you are running though has specified the deployment version as 1 which means when deployed, your app will check here: http://1-dot-your-project-id.appspot.com hence the 404 (because in essence, this URL doesn't exit. I use one here for illustration purposes).

To resolve this, go to https://appengine.google.com/deployment?app_id=s~your-project-id and make the version you've uploaded the default version

More here: App Engine Set-up hiccups

Answer 2

Looks like you have not been accepted to the trusted tester program. This will not work unless you are in the TT program. You can sign up at this page:

http://endpoints-trusted-tester.appspot.com/

You will receive an email when(if) accepted.