Time-outs in LC Server?

Alex Tweedly alex at tweedly.net
Thu Jul 18 18:55:52 EDT 2019


You should never use 'send in time' or 'wait with messages' in LCServer.

Each http request starts up your LC server script anew - and you need 
that request to be handled and the server-instance shut down as quickly 
as possible. And the next http request will start up another, entirely 
separate, instance; so you need to be storing some status info between 
requests.

If a user doesn't do anything on the site for a few minutes, then you 
can use a flow something (vaguely) like :

(at start of the script):

  - check if user is logged in (if not, prompt them to login / register 
/ ...)

  - check a database entry for when they were last active (up to you 
whether that's per-user, per user/per-IP address, or per-some-cookie, or 
...)

  - if time-since-last-action is too long - log them out, and as 
appropriate, either
       a.  apologise :-), and go to login screen
       b. return a "not logged in" error

  - if it is still within time, then update the "last active" database entry

  - then do the rest of the current request


Alex.

On 18/07/2019 17:45, Rick Harrison via use-livecode wrote:
> I  was playing around with Send In Time
> with LC Server.  It’s throwing an error
> at me after it’s supposed to be all done
> executing.
>
> The reason I was playing with such things
> is I want to be able to logoff any user that
> hasn’t been using the website for a few
> minutes when the system times out.
>
> How are you handling such things in
> LC Server?
>
> I did come across a Javascript that
> might work, but I’d rather use LC
> for the task if possible.
>
> Suggestions?
>
> Thanks in advance!
>
> Rick
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