Yes, there exist other solutions to this already. But those require (at least to my knowledge) either a server outside AppEngine or the use of another service. To have everything inside the AppEngine environment would be really nice for a lot of reasons.
On 3 Nov, 14:15, Peter Petrov <onest...@gmail.com> wrote: > 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 <robert.kl...@gmail.com> 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 <onest...@gmail.com> 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 <robert.kl...@gmail.com> > > 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/g... > > > >> Robert > > > >> On Tue, Nov 2, 2010 at 08:41, Tomas Alaeus <tala...@gmail.com> 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 > > google-appeng...@googlegroups.com. > > >> > To unsubscribe from this group, send email to > > >> > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscrib...@googlegroups.com> > > . > > >> > 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 google-appeng...@googlegroups.com. > > >> To unsubscribe from this group, send email to > > >> google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscrib...@googlegroups.com> > > . > > >> 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 google-appeng...@googlegroups.com. > > > To unsubscribe from this group, send email to > > > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscrib...@googlegroups.com> > > . > > > 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 google-appeng...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscrib...@googlegroups.com> > > . > > 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 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.
