3.3.4 Higher-Layer Triggered Events

If a dynamic virtual channel associated with a connection is terminated [MS-RDPEDYC], the client MUST release all the system resources that are associated with that connection. The client MUST also break the hosting relationship between that connection and its parent connection, if one exists. As a result, the client MUST recompose the rendering target of the parent connection as if the server had gracefully closed the child connection. For more information, see section 3.2.5.15.