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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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Getting Channel Client ID for RequestFactory requests

Is there any way to get the Channel ID on the server or transmit it inside a RequestFactory call? Situation: User starts the application, a channel is being opened. User persists an entity with RequestFactory…
Dominik
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Channel API: will presence get a disconnected notification when token expires?

I have built an app on the Channel API, using the channel presence urls to keep track of connected clients. I receive a ping at /_ah/channel/disconnected/ when clients go away. Will I receive a ping if the token expires while the front-end client is…
Anentropic
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Checking client presence using Channel

I am currently developing an application on Google App Engine for one of my course project, and am now trying to come up with a side panel that will update itself whenever someone logs in and connect to my application. The purpose is to let other…
Edward Tan
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GWT & channel API

Anyone have experience with appengine channel api with GWT? I have been following the BRIEF "How-to" provided with the googlecode . My question is how do we get the channelKey(token variable in the code below) in GWT? I am assuming you must use…
Patrick Jackson
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App Engine Channel API's Javascript Client Isn't Using my onError Callback

I'm using App Engine's Channel API to maintain a connection between a Chrome extension and an App Engine app. You can see my Channel-related code here: https://github.com/2cloud/Chrome/blob/3fe70262ef69ae8286a057055f4108760560c47e/socket.js (The app…
Paddy
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Google Channel API - How to test it locally?

I want to test my application which share messages between two users using google channel api, but I manage to see messages going only from one side to the other. is it because I'm opening 2 channels on the same machine? I am running the…
Muky
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How to keep track of the number of active user in a Channel API chat

I'm working on a small chat using the google Channel API and appengine. Is there an easy way to know how many users are active on the chat? Thanks, David
dbikard
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Google App Engine Xmpp chat how to manage the status of the users?

It is easy to play with xmpp and the channel api to obtain a chat like... http://www.dev-articles.com/article/Google-App-Engine-sending-messages-with-XMPP-393002 is an example, although I'm fighting a bit to understand the best way to manage the…
Luigi Agosti
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Using GAE Channel's from a TaskQueue

I have been trying for some days to use the channel.send_message API in GAE (via Python) to send a message to a client when a TaskQueue process has finished. It just WON'T work. I can use send_message from another request and it works fine and is…
ConfusedNoob
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Channel API socket doesn't open on first load in Firefox

I have a 2 player cardgame app that I built using App Engine and the channel API. For the most part it works great, but I'm having a weird problem in Firefox. When I enter a game in Firefox, I call socket.open, but nothing happens. I never get the…
Einar Egilsson
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trying to understand Youtube Leanback implementation

in youtube leanback new application I can control the full-screen browser on my computer, using my android phone. I'm trying to understand - how does it work? For example, when I press "play" the movie starts playing. Now when I press play, it…
Lior Frenkel
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Google App Engine Channel API and Chrome Extensions

Over Christmas I implemented some code to open a channel to my App Engine application using the channel API and it was working fine. I recently returned to the code and find that it is broken, and the problem seems to lie in talkgadget that the…
Ronald S Wood
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GAE: Channel API: ApplicationError: 1

GAE seems to throw an ApplicationError: 1 on some code that has worked before. It could be a general GEA problem or some version upgrade issue as the code last was used a while ago. How would I debug that error? ApplicationError: 1 …
thomasf1
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How reliable is the GAE Channel API /_ah/channel/disconnect channel_presence path?

I'm using the GAE Channel API to connect to clients in a Javascript webapp. I've found in testing that the /_ah/channel/disconnect handler can take as long as 5-6 minutes to fire after my browsers internet connection is dropped. I haven't found any…
jamis0n
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Are Google App Engine channels reuseable?

I am looking into the possibility of using Google App Engine for a java app but need something like WebSockets. It seems that initially Google App Engine's channels supported reuse. But various posts around at least 2013 seemed to suggest that this…
user782220
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