It will let you simplify _when_ you run inside a web browser. That's what the Channel API is designed for. For pushing data to other types of clients (automated services, bots, etc.) there already exist good solutions - XMPP, PubSubHubbub, plain HTTP POSTs.
When you run in a browser, the complexity is hidden in the Channel API javascript. Only a simplistic interface similar to WebSockets is exposed to you as developer. But the complexity hidden underneath in the Channel API client library is pretty big: - first, there is HTTP long-polling used to emulate a persistent connection - second, an undocumented protocol is used to frame the separate messages; it's probably ProtocolBuffers-based - third, an invisible Iframe together with a Closure XPC channel is used to bypass the same-origin javascript policy The last one is not necessary if you create an out-of-browser client. But the first two are complex enough (primarily the first one). Considering that you have other (good) options, it would be quite crazy to go down that road. On Wed, Nov 3, 2010 at 6:37 AM, Robert Kluin <[email protected]> wrote: > Are the data-exchanges overly complicated? > > I have used XMPP for an app, I was hoping the channel API would let me > simplify. > > > > Robert > > > > > > On Wed, Nov 3, 2010 at 00:29, Peter Petrov <[email protected]> wrote: > > Forget about emulating it outside of a browser. Your best bet is using a > > separate mechanism for sending messages to non-browser clients - for > example > > make a HTTP postback, or send a XMPP message. > > > > On Wed, Nov 3, 2010 at 6:20 AM, Robert Kluin <[email protected]> > wrote: > >> > >> Have you look at the communications at all? I the javascript file is > >> included in the SDK. It is a little "heavy," but you could probably > >> use firebug (or chrome/safari dev console) to figure out what is going > >> on. > >> > >> > >> > http://code.google.com/p/googleappengine/source/browse/trunk/python/google/appengine/tools/dev-channel-js.js > >> > >> > >> > >> > >> Robert > >> > >> > >> > >> > >> > >> > >> On Tue, Nov 2, 2010 at 08:41, Tomas Alaeus <[email protected]> wrote: > >> > I for one thought directly of games when I heard that the Channel API > >> > were coming to AppEngine. However, all discussions and articles only > >> > mentions a Javascript client running in a web browser. Will it come > >> > ports to other languages as well? Maybe the actual communication is so > >> > simple that it is trivial to do oneself (considering that the API is > >> > somewhat similar to websockets if I understood it correctly)? > >> > > >> > Thanks, Tomas > >> > > >> > -- > >> > You received this message because you are subscribed to the Google > >> > Groups "Google App Engine" group. > >> > To post to this group, send email to > [email protected]. > >> > To unsubscribe from this group, send email to > >> > [email protected]<google-appengine%[email protected]> > . > >> > For more options, visit this group at > >> > http://groups.google.com/group/google-appengine?hl=en. > >> > > >> > > >> > >> -- > >> You received this message because you are subscribed to the Google > Groups > >> "Google App Engine" group. > >> To post to this group, send email to [email protected]. > >> To unsubscribe from this group, send email to > >> [email protected]<google-appengine%[email protected]> > . > >> For more options, visit this group at > >> http://groups.google.com/group/google-appengine?hl=en. > >> > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<google-appengine%[email protected]> > . > > For more options, visit this group at > > http://groups.google.com/group/google-appengine?hl=en. > > > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" 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?hl=en.
