reconnect method
void
reconnect()
Implementation
void reconnect() {
IOWebSocketChannel.connect(
url,
protocols: protocols,
headers: headers,
pingInterval: pingInterval
);
connectionState = HotlineSocketConnectionState(
onConnect: _onConnect,
onDisconnect: _onDisconnect
);
connectionState.stateType = HotlineSocketConnectionType.connecting;
_startWebSocketListener();
subscriptions.unsuspendAll();
}