ActiveHTML: Differences to ASP3.0 

ActiveHTML is a CGI-Program. That means, it is called every time a web page is requested. It does not stay in memory between requests. That is you can not store objects in Session- or Application-Variables to use them in the next request. Although you can of course store string, numbers or arrays in Session- or Application-Variables. Even in Microsoft IIS, it is not recommended to store objects in such variables, because doing so will increase server load. You will find more details about the Session- and Applicationobject here. All major objects are binary compatible with the corresponding IIS objects.

ActiveHTML emulates the IIS so perfectly, that many Third Party Components will work seamless with ActiveHTML. Only components using Microsoft Transaction Server or internal IIS functions, will not work.

See the differences between Microsoft ASP 3.0 (used in Internet Information Server 5.0) und seliSoft ActiveHTML:

 

Functions / Objects	Microsoft ASP 3.0	seliSoft AHTML 1.x
Response.AppendToLog	The AppendToLog method adds a string to the end of the Web server log entry for this request	Writes text to WIN32 debug interface
Response.IsClientConnected	The IsClientConnected property indicates if the client has disconnected from the server.	Always returns TRUE
Request.ClientCertificate	The ClientCertificate collection holds fields of keys and values from a security certificate that the client browser passes to the Web server	Always returns an empty collection
@ENABLESESSIONSTATE	You can use the @ENABLESESSIONSTATE directive to turn off session tracking for a page	Does nothing, session tracking is always on
@TRANSACTION ObjectContext.SetAbort ObjectContext.SetComplete	You can use the @TRANSACTION directive to indicate that the script should be treated as a transaction	Does nothing, Microsoft Transaction Server would be required
GLOBAL.ASA:Application_OnEnd	The Application_OnEnd event occurs when the application quits, after the Session_OnEnd event	These event never occurs because ActiveHTML is a CGI-Program and not permanent in memory
GLOBAL.ASA:Session_OnEnd	The Session_OnEnd event occurs when a session is abandoned or times out.	The Session_OnEnd event occurs when a session is abandoned.
MSWC.Status.ActiveHTTPSessions MSWC.Status.Ktransferred MSWC.Status.RequestsSinceStart MSWC.Status.RequestsToday MSWC.Status.ServerVersion MSWC.Status.StartDate MSWC.Status.StartTime MSWC.Status.TotalRequests MSWC.Status.VisitorsSinceStart MSWC.Status.VisitorsToday	For all Windows platforms, the properties of the Status object currently all return the string "unavailable."	These properties are supported. The remaining properties of MSWC.Status return "unavailable".
MSWC.IISLog	The IIS Log component is used to create an IISLog object, which enables your applications to read from the IIS log	Not supported because this is an IIS specific object.

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