start()

Initiate some action to open the connection on the network like making a handshake, initiating a multiplexing session, etc. Starts the connection, which will cause the connection to evaluate its path, do resolution, and try to become ready (connected). NetworkConnection establishment is asynchronous. onStateUpdate will be called when the state changes. If the connection cannot be established, the state will transition to waiting with an associated error describing the reason. If an unrecoverable error is encountered, the state will transition to failed with an associated error value. If the connection is established, the state will transition to ready.

final func start() -> Self