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Questions tagged [channel-api]

The Channel API creates a persistent connection between your application and Google servers, allowing your application to send messages to JavaScript clients in real time without the use of polling.

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What's wrong with my channel api code?

I've been working on getting a website together with GAE and the channel api to display and process real time data from a robot I'm working on. I'm pretty new to web development, and python in general, but it seems to me like this code should work…
smath
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Google App Engine Channel presence handler throwing exceptions

I'm experiencing this with the SDK running locally on my Mac. I am trying to establish presence handling. I've created a simple servlet that does nothing but logging. However, I'm getting the following exception on any connection and…
Chuck
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Channel API and server affinity

As GAE instances are added and removed how does the Channel API work to maintain a connection between a server and a client browser. That is, does a single server maintain the connection and is solely responsible for pushing out messages to the…
user782220
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can xmpp on google app engine push message to javascript client

I am creating a website on google app engine and I want to allow users to chat with each other just like gmail.I have read that there are 2 options - xmpp and channel api. Now I want to know,can the xmpp sever on gae talk to javascript clients and…
vishesh
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python Channel API expiry and usage in google app engine

I want to use the channel api to push updates to open pages, What I have done so far is to store the page client ids in ndb - I have included a code summary My question is: How do I manage closed pages and expired tokens? and is this the best way to…
user784435
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getting started

I want to create an app like https://apprtc.appspot.com/?r=04188292. I know a little bit about webrtc but cannot get a hold of google app-engine.How to set it up for javascript and start coding??I tried this but it did not work
Vaibhav
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How to write a Webapp2 Request Handler to Allow Client to Get Data after receiving Channel API message

As a follow up to another question I asked, I have a basic question about the easiest way to get a webapp2 python server to provide json data that is too large (about 100 kb) to send as a Channel API message to a client . The webapp2 server…
dave
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Sitebricks and Channel Presence Service (GAE); Also having trouble with normal servlets

In my Java Google App Engine server application, I would like to enable Channel Presence servlets in order to track connections/disconnections to/from my channels using the Channel API (as described here. I have already edited my…
ecbrodie
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How do I get GWT to receive the token created by the Python GAE Channel API?

I would like to use the GAE Channel API (Python 2.7) with my GWT app (using GWT-GAE-Channel), and I am having trouble figuring out how to get the token created on the server side Python into my GWT app ("index.html" in this example) so that the…
dave
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Google Channel API message from JavaScript client to server

After a while I got the first part of the Google Channel API working. Now I have some problems with sending a message from the JavaScript client to the server. Here is the servlet for the Google Channel API connection: public void…
Andre Hofmeister
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Google App Engine APIs that are irrelevant when using GWT?

I've been reading up on both GAE and GWT, and it seems that if you are deploying GWT apps to GAE then the following APIs are unnecessary: PageSpeed Channel API Since GWT is already super-optimizing all client-side code, and includes all the…
IAmYourFaja
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Gracefully handling closed channel with GAE channel api

I am creating a web application using Google App Engine with the Channel API. This is my first attempt at doing anything Ajax-like, and I suspect there is a standard technique for solving my problem, but I've been unable to find it. My client…
jpl
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GAE channel API chat

Currently im trouble shooting some code that I wrote to create a chat room. I will include the code if necessary but for now I just wanted to hear some possibilities for the problem im having. So basically I have client1 that is listening to a…
David
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Google App Engine Channel API MESSAGE QUEUES

If a client is connected and then disconnects - say his connection is lost for 5 mins; does the server queue the messages that can't be delivered? On the local development server this seems to be the case? If this is the case in production - how…
spidee
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AppEngine ChannelAPI WARNING: No file found for: /_ah/channel/connected/

in my web.xml channelConnected ChannelConnected channelConnected …
JR Galia
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