Hello Richard,

I had the same problem and could only resolve it by generating a new
token for the reconnecting user, i.e. calling create_channel again.
You can use the same user id though. I believe I read in the docs
somewhere that a token is only good for one sustained connection,
afterwards it's discarded.

BR // Fredrik

On May 12, 1:57 pm, Richard Arrano <rickarr...@gmail.com> wrote:
> Hello,
> I've been using the Channel API and for each chat room, I have a fixed
> number of users. So for each room, prior to the launch, I call
> create_channel for each user and store it in a dictionary that I save
> in a TextProperty. When I want to broadcast, I read the TextProperty
> and convert it back to a dictionary, then call channel.send_message on
> each. This works well initially. However, when a user exits the
> session and comes back, it invariably causes this error each time:
>
>   File "C:\Program Files\Google\google_appengine\google\appengine\api
> \channel\channel_service_stub.py", line 127, in
> _Dynamic_SendChannelMessage
>     self._channel_messages[client_id].append(request.message())
> KeyError: '21024-21026-185804764220139124118'
>
> Where the first two numbers are some identifiers and the last part is
> the user id. Does something get "used up" so to speak when the client
> opens the initial connection? I've seen people suggesting reusing
> tokens instead of calling create_channel each time, which is what I'm
> trying to do. Does anyone have any ideas why this would occur?
>
> Thanks,
> Richard

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