Thanks for the quick reply. REST api or some sort of RPC services will sort my problem with get or set device. But the problem now is that I have client GUI app running in browser. So I would probably need to write some sort of Comet code on the browser side. And everything happening on the hardware side must have effect in the app running in browser without refreshing. I must also have in mind that the browser will be running for couple of days constantly. So memory leakages will probably be a problem.
Architecture of the system is like this: Lamps (with remote control capabilities) <----> embedded pc with lan <----> GAE services <----> UI written in HTML, JS A while ago I solved this problem with writing a socket daemon and server was than able to connect to socket and communication was instant. But Sockets are not supported in GAE as far as I understand. And also Websockets are not fully supported. I hope this explains my situation a bit more. Thanks in advance. On Jun 2, 12:41 am, "Ikai L (Google)" <ika...@google.com> wrote: > There may be some delay in the time between sending an XMPP message and it > being processed by your application, but for all practical purposes it > should be acceptable. You could always build an HTTP REST API and just call > that directly - this would guarantee that the action is invoked as soon as > it is called. > > On Tue, Jun 1, 2010 at 8:51 AM, Mitja Felicijan > <mitja.felici...@gmail.com>wrote: > > > > > Hi. > > > I need to develop 3 services for a personal project. Idea in doing > > this via google app engine is interesting. But I have couple of > > questions. > > > My services will receive data from external devices and their states > > will be stored in database. On the client side a web application will > > do some operations with this devices on the hardware side. In my case > > I would use google app engine as a middle-ware. But the main problem > > that occurred to is how will I communicate with notify service? I've > > read this sort of things can be done through XMPP that is supported > > under google app engine. > > > Do you thing it is possible and reliable if I use it in such fashion? > > Do you also thing such software will be reliable and fast? I can not > > afford to have lag. > > > Thnx in advance. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to google-appeng...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscr...@googlegroups.com> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine?hl=en. > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine > Blog:http://googleappengine.blogspot.com > Twitter:http://twitter.com/app_engine > Reddit:http://www.reddit.com/r/appengine -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
