3.3.3.7.1 Transport Connection Shutdown
This event is triggered when the RPC transport indicates to RPC that a connection has timed out. Different RPC transports interpret this differently. For details on how a given RPC transport times out connections, see the documentation for the respective transport. When this event occurs on a connection, all security contexts and presentation contexts are considered invalid. If the connection is the last connection for an association, the context handles belonging to that association are run down.