Internet Direct (Indy) Version 9.0.1 Beta
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property IOHandler: TIdIOHandler;
IOHandler is used in methods that perform low-level read or write operations like ReadFromStack and WriteBuffer. IOHandler is also used in methods that access the connection status like CheckForDisconnect, Connected, DisconnectSocket, and Disconnect.
When accessing IOHandler in application code, always cast the IOHandler to the correct descendant class. This is needed to access any methods or properties in the descendant that cannot be represented in the ancestor class at runtime.