The current state Rump library can connect to a WAMP router and perform publish and subscribe events asynchronously. It has support for encoding heterogeneous positional arguments and keyword arguments when Rust's strongly typed system, while still adhering to WAMP's robust spec. The limitations of the Rump library lies in it's lack of error handling and fine grained control over events and event options.
There were three tiers of goals: minimal, expected, and stretch goals.