Runs a websocket on the given port. Useful for high-frequency messages (like audio levels) and allows the backend to send messages to the client. About ports... we could have a single server that is used to pass any number of messages. We could have a single connection on the client with a means to distribute messages around the client depending on, say, a message identifier. Or we could have multiple connections (sockets) from various parts in the client, each just filtering out the message stream to the ones they are interested in. Alternatively, you could have multiple instances of this class, each with its own "port" parameter, and intended for use by a single, simple end point. That is the case as this is introduced in Bloom 3.6, for getting the peak level of the audio coming from a microphone.
