class %CSP.StreamServer extends %CSP.PageThe %CSP.StreamServer serves any stream data directly from InterSystems IRIS. It derives from %CSP.Page and implements the OnPage() and OnPreHTTP() methods.
You can control how the stream is sent using the stream's attributes, these attributes can be accessed via properties in the %CSP.CharacterStream and %CSP.BinaryStream, however you can also set these directly in any stream class. The attributes are:
- ContentType - Sets the %response.ContentType property
- CharSet - Sets the %response.CharSet property
- Expires - Sets the %response.Expires property
- ContentDisposition - Set the 'Content-Disposition' response header
- bin - 1 if this is binary and 0 if this is a character file
- charset - For character files the charset to report in the charset header
parameter UseSession = 0;
Stream serving does not need the session
classmethod FileClassify(ext As %String, ByRef type As %String, ByRef bin As %Boolean, ByRef charset As %String) as %Boolean [ Language = objectscript ]
Classify a file type
Convert an HTTP date to a $HOROLOG format date, converts from UTC time to the local time.
classmethod OnPage() as %Status [ Language = objectscript ]
The OnPage() is called by the CSP dispatcher to generate the page content. For %CSP.StreamServer, since the content type is actually a stream, not HTML we simply write out the stream data.
classmethod OnPreHTTP() as %Boolean [ Language = objectscript ]
The OnPostHTTP() is called by the CSP dispatcher before the HTTP headers have been sent. Here, we check that the incoming STREAMOID value is valid, then we set the appropriate content type and content length values into the %response object (see %CSP.Request), in preparation for sending the image data in the OnPage().
Convert a $H value into an HTTP date format. It assumes that $H is local time and converts it to UTC