TIdFTP with HTTP Proxy issue [Delphi 10.2/Indy 10.6.2.5366]

[rlebeau]

after f.Connect will get an error: "Abstract Error"

TIdIOHandlerSocket is an abstract class, you can't instantiate it directly.  You need to use TIdIOHandlerStack instead, which derives from TIdIOHandlerSocket.

Code:

LHandler := TIdIOHandlerStack.Create(f);