Client-side RPC

Hello, I'm planning to use gRPC for my next project, but as far as I've understood only RPC on the server are supported. The situation is that I want to connect multiple clients to a gRPC server and then let the server call methods on the connected clients. So basically, the reverse of current gRPC functionality. What would be the easiest way to achieve this behavior? Also, is there a way for the server to list all connected clients and address each one individually?

No files, tests, or entry points are named. Research the existing server-side RPC model and the requested client-side RPC behavior, including listing and addressing connected clients; done would be a documented supported approach or a clearly scoped feature proposal.

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