I can confirm this issue. It is there from August, it was the first time I 
noticed at least. For us it looks like this - everything connected and 
works, messages flow, then all of a sudden w/o any pattern in time or any 
other conditions, client simply stops receiving any messages. No callbacks, 
nothing. Then after an unspecified time messages may start going through 
again or may not. Sometimes it doesn't happen for a long time, sometimes it 
happens very often. We had to migrate to Pusher mostly to mitigate this 
issue. Channels are still used by us, but simply because now they are not 
affecting us so much and we postponed the effort to migrate fully in favor 
of other things. Anyway sooner or later we will do it, when smt new and 
nasty comes up :( I want to leave Channels as plan B if Pusher fails if 
this is not too huge effort to maintain..

PS. I fully understand that there is no way you can reproduce this issue 
with simple steps, so there can not be any fix. In order to catch the 
problem, you actually have to use the Channels extensively, because it 
requires time and scale. And I have a feeling nobody in GAE is using it, 
otherwise it wouldn't be so broken... sorry if the feedback sounds bit 
negative, but we lost time...

четверг, 3 января 2013 г., 0:43:12 UTC+2 пользователь Johan Euphrosine 
(Google) написал:
>
> Hi,
>
> Do you still have this issue?
>
> Are you sending and receiving messages from the same application version?
>
>
> On Sun, Dec 30, 2012 at 12:00 PM, <[email protected] <javascript:>>wrote:
>
>> I've recently faced the problem. I've implemented some collaborative work 
>> on my app. I've used the Channel API and it works really fine on localhost. 
>> After deploy, the "update" in the other client is never received. why?
>>
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>
>
>
> -- 
> Johan Euphrosine (proppy)
> Developer Programs Engineer
> Google Developer Relations 
>

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