api.fabaccess-api/connection.capnp

# Copyright © 2020 Gregor Reitzenstein
# Licensed under the MIT License:
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
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# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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@0x9e1c146a27dcc635;

using Auth = import "auth.capnp";
using Api = import "api.capnp";

struct Message {
    union {
        greet @0 :Greeting;
        # Be polite and say hello to the other end

        auth @1 :Auth.AuthMessage;
        # Start an authenticaion exchange

        starttls @2 :Void;
        # Start a tls handshake

        # TODO: RPC bootstrapping
    }
}

struct Greeting {
    # Be nice and say hello to each other first
    # A client sends this message to a server first thing, a server then replies
    # similarly

    # Hello, I'm …
    host @0 :Text; # non-qualified Hostname of the client/server, as applicable

    # using the program …
    program @1 :Text; # SHOULD be of the form `programname-version`

    # and speak the API version …
    major @2 :UInt32; # The major part of the API version
    minor @3 :UInt32; # The minor part of the API version
}