Timeout while fetching for remoteApi GAE - google-app-engine

Question

I'm using Java to implement remoteAPi in Google App Engine (GAE) by following this tutorial:
https://developers.google.com/appengine/docs/java/tools/remoteapi
but after configuring at web.xml, I use the following codes to insert new entity to local datastore:
String username = "myusername";
String password = "mypassword";
RemoteApiOptions options = new RemoteApiOptions()
.server("localhost", 8888)
.credentials(username, password);
RemoteApiInstaller installer = new RemoteApiInstaller();
installer.install(options);
try {
DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
System.out.println("Key of new entity is " +
ds.put(new Entity("Hello Remote API!")));
} finally {
installer.uninstall();
}
but error has occured:
Problem accessing /remoteApi/index. Reason:
Timeout while fetching: http://localhost:8888/remote_api
I viewed on debug and know that it caused by : "installer.install(options);" statement.
How can I solve this? Increase the socket time out ?
Thank in advance !

Answer 1

i did it in both local and also deployed apps.following code may help you.
remember the code must be write in RPC
i used GWT 2.4,JRE 1.7 and GAE 1.7.2.
put GAE Remote Api in WEB-INF/lib
web.xml
<servlet>
<display-name>Remote API Servlet</display-name>
<servlet-name>RemoteApiServlet</servlet-name>
<servlet-class>com.google.apphosting.utils.remoteapi.RemoteApiServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>RemoteApiServlet</servlet-name>
<url-pattern>/remote_api</url-pattern>
</servlet-mapping>
XyzServiceImpl.java
#Override
public String callGaeRemote() {
RemoteApiInstaller installer = null;
List<Entity> allEntities = null;
String response = null;
try {
RemoteApiOptions options = new RemoteApiOptions().server(
"localhost", 8888).credentials(
"username", "password");
installer = new RemoteApiInstaller();
installer.install(options);
DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
System.out.println("Key of new entity is " +
ds.put(new Entity("Hello Remote API!")));
response = "Success";
} catch (IOException e) {
e.printStackTrace();
}
finally {
installer.uninstall();
}
return response;
}