client-dispatcher-server

Limitations of SunRPC mechanism as a Client-Dispatcher-Server architecture and comparison with Broker

I am reading a book on design patterns (an old edition) "Pattern-oriented software architecture". In the chapter dedicated to Client-Dispatcher-Server, SunRPC is cited as a Client-Dispatcher-Server architecture, with portmapper acting as Dispatcher in the Client-Server negotiation. I never used SunRPC practically, although I know more or...