> HTTP/JSON - where we are now. That’s not a protocol either, you can use HTTP as an RPC (with a JSON payload), but you can also define a transport-independent

> HTTP/JSON - where we are now. That’s not a protocol either, you can use HTTP as an RPC (with a JSON payload), but you can also define a transport-independent JSON RPC protocol (e.g. JSON-RPC2, which can be used over HTTP but can also be used over simpler sockets, for instance chrome’s dev tools protocol is JSON-RPC2 over websocket or a pipe)