TIdMappedPortContextEvent is a type used to represent event handlers signalled during execution of proxied client sessions in TIdMappedPortTCP. 

AContext is the executable task that represents the client session created when a listener thread accepts a connection to the server. 

TIdMappedPortContextEvent is the type used to implement the following event handlers in TIdMappedPortTCP: 

TIdMappedPortTCP.OnConnect TIdMappedPortTCP.OnExecute TIdMappedPortTCP.OnOutboundData TIdMappedPortTCP.OnDisconnect TIdMappedPortTCP.OnOutboundDisconnect