[fpc-pascal] web app and application persistency

[Gustavo Enrique Jimenez]

Hi:

 I send cookies to the client. One of those cookies is a "sessionID",
a random number generated at login.
 My sequence is something like

Login
Client: username/password ->Login html button
Server: run cgi app with username/password parameters -> ¿Valid user?
->  generate sessionID, store in DB. Send sessionID to the client as a
cookie.

Transaction
Client: Product -> Search product html button (sessionID is also sent
to the server)
Server: run cgi app with product/username parameter. sessionID is
implicit, as any cookie. if username/sessionID from the client is the
same as in the DB, send data to the client.

The sessionID cookie will remain until logout or expire time. This
way, you don't have to store password in html. The sessionID cookie
must be random+hash, unique to every session. sessionID is sort of
temporal password.

Cliente: username  -> Logout html button
Server: run cgi app with username/sessionID. Verify
username/sessionID, then send an empty sessionID cookie (this will
delete the sessionID cookie in client)

Gustavo



>2011/8/1 Felipe Monteiro de Carvalho <felipemonteiro.carvalho at gmail.com>:
> Hello,
>
> This is kind of a theorical question, but I though I'd ask before
> starting to code =)
>
> Basically I have a desktop app which I need to retrofit into a
> web-app. My idea is to cut it in a visual and a non-visual part and
> implement the visual part in HTML+JavaScript and keep the non-visual
> like it is now, in Pascal.
>
> So, the problem is that CGI apps are started for every request, correct?
>
> So how should I proceed to obtain a application which will keep
> running for the entire session of a user? I don't want to simply save
> session info because the application is rather large, there are lots
> of things going on and it would be much easier for my coding if I
> could keep the program running on the web server ...
>
> Any ideas?
>
> thanks,
> --
> Felipe Monteiro de Carvalho
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