Web Sockets and Messaging

Properties
EventHandler	onmessage

Operations
void	close() The close() method, when called on a port local port that is entangled with another port, must cause the user agent to disentangle the two ports. If the method is called on a port that is not entangled, then the method must do nothing.
void	postMessage(any message, optional sequence<Transferable> transfer)
void	start() The start() method must enable its port's port message queue, if it is not already enabled.

MessagePort