Function onupgrade

sdk/src/CloudSocketClientLib.js:471–476

(to)

                            //When the socket is upgraded while we're probing
                            function onupgrade(to) {
                                if (transport && to.name != transport.name) {
                                    debug('"%s" works - aborting "%s"', to.name, transport.name);
                                    freezeTransport();
                                }
                            }

                            //Remove all listeners on the transport and on self
                            function cleanup() {