[fpc-pascal] FCGI MultiThreaded

[Michael Van Canneyt]

On Fri, 2 May 2014, Michael Schnell wrote:

> On 05/02/2014 11:05 AM, Michael Van Canneyt wrote:
>> 
>>>
>>>  does anyone know if the TCustomFCgiApplication is multithreaded ?
>> 
>> No, it is not.
>> 
>> It's on my todo list, but has low priority.
>> 
>
> While enhancing TCustomFCgiApplication regarding threads, 
> TThread.Synchronize, TThread.Queue would need to be usable.
>
> I suppose (in FCGI or similar) a "Thread" should be able to be kept running 
> while the Browser is disconnected (no HTTP request running).
>
> IMHO a very interesting issue here is Server to Browser signaling. In the 
> past I learned that the straight CGI-compatible method ("Comet" and friends) 
> does not work decently but nowadays, "WEBSockets" is supported by all 
> relevant browsers and can be used for this.

There is a websockets implementation: search for bauglir websockets.

The two technologies HTTP and websockets are unrelated. 
The websocket simply uses the HTTP headers as a start, 
but the rest of the protocol is completely different.

>
> TCustomFCgiApplication is used in Lazarus (wbelazideinterf.pas).
>
> While enhancing it regarding threads, IMHO it would be a most sensible goal 
> to do a Lazarus "Application type" / "WidgetType", that additionally to 
> TThread.Queue, allows for TTimer and Application.QueueAsyncCall.

I see you are still determined to push your ideas. 
Please, Please, please, do everyone a favour and get started on it.

All the time you spent on mails about this by now dwarfs the time needed to actually implement it.

Michael.