Represents a channel of communication between a client thread (Client-side MTM, User Interface MTM, or message client application) and the Message Server thread.

The class provides the means by which clients are notified when important Message Server events occur.

Note the following significant groups of functions:

Creation functions: a message client application must use OpenSyncL() or OpenASyncL() to create a session object, before it can instantiate any MTM or CMsvEntry object. Only a single session should be created within a thread. As Client-side MTM, User Interface MTM, and CMsvEntry objects are created in the client thread, these use the client session, and do not create their own. Note that to close a session, delete all objects relying on that session, and then the session object itself.

Cleanup functions: CMsvSession provides the ability to handle the cleanup of entries in the event of a leave occurring, in a very similar manner to the standard cleanup stack. The difference is that, on a leave, any entries that are on the entry cleanup stack are removed from the Message Server. The implementation uses the standard cleanup stack, so entry push and pop functions should be used in the same order as all other types of push and pop. The functions can be used both by MTM implementations and message client applications.