Closes the directory.

Any open files are closed when the file server session is closed.

Close() is guaranteed to return, and provides no indication whether it completed successfully or not.

Creates a new sub-session within an existing session.

Plugin authors should pass in a TRawEntryArray if their intent is to modify the data.

Sends a message to the server and waits synchronously for a reply.

An opcode specifies the service required. A set of message arguments is passed that can be used to specify client addresses, which the server can use to read from and write to the client address space.

Note that this function will only fail if the server itself fails or environmental errors occur in the server. All requests made using this function are guaranteed to reach the server. This means that all synchronous client requests (typically those that return void) should be routed through this synchronous variant of SendReceive().