http://dn.codegear.com/article/27575 2008-07-05T13:06:21-07:00 Marc D#rst http://threads.codegear.com/threads/threads.exe/userall?commentid=33795 http://threads.codegear.com/threads/threads.exe/view?commentid=33795 2002-12-24T02:55:12-08:00 2002-12-24T02:55:12-08:00

Managing Session and Authentication in Delphi 6 Web Services

Hi folks,Nice article. I'm just wondering if there as any paper or something like this which explains the state-/session-behaviour of webservices in a little more details?For example: when one create an instance of a webservice-class, will it keep alive on the server until the object gets freed from the client (incl. member-variables etc.)? I'm thinking of webservices implemented as CGI's which get's fired for every request. Does the VCL store/reload such object-state/-data??Any hint would be great ;-)Cheers,Marc Daniel Polistchuck http://threads.codegear.com/threads/threads.exe/userall?commentid=29686 http://threads.codegear.com/threads/threads.exe/view?commentid=29686 2001-08-19T07:54:52-07:00 2001-08-19T07:54:52-07:00

re: Thread-unsafe code in GetSession Data?

Hallvard,You are 100% correct, I think I already updated this code in my codecentral submission.Thanks,Daniel Hallvard Vassbotn http://threads.codegear.com/threads/threads.exe/userall?commentid=29645 http://threads.codegear.com/threads/threads.exe/view?commentid=29645 2001-08-15T06:57:13-07:00 2001-08-15T06:57:13-07:00

Thread-unsafe code in GetSession Data?

Nice article. However it looks like this code is not thread-safe:function TAuthenticator.GetSessionData( const SessionHandle: String): String;begin Result := ''; if not LocateSession(SessionHandle) then Exit; Result := wmAuthServer.cdsSessions.FieldByName ('SessionData').AsString;end;The LocateSession function will use the critical section correctly, but then you leave the critical section, so another thread might change the location of the CDS before you extract the field contents.Wrap this code by another try..finally section that enters and leaves the critical section, and it should be safe./Hallvard Daniel Polistchuck http://threads.codegear.com/threads/threads.exe/userall?commentid=29596 http://threads.codegear.com/threads/threads.exe/view?commentid=29596 2001-08-09T05:44:26-07:00 2001-08-09T05:44:26-07:00

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