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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.

217 questions
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Close GAE channel from server side Python

In the client side is possible close the socket with connection.close(), but its possible close it from the server side?
alei
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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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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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