A client socket stays in connecting state if an invalid URI is given

[flowersinthesand]

If an invalid URI is given that means if no transport factory specified can handle the given URI, a client socket stays in connecting state forever.

var socket = cettia.open("http://localhost:8080?transport=unknown");
socket.on("close", function() {
    console.log("never called");
});

It should try a connection with a next URI or fire error and close event if there is no remaining URI.