* WS client for ISY on raspi01: http://192.168.1.27/ws.html
* WS client for OHAB: http://ohab:8080/static/ws.html
** this needs "org.eclipse.smarthome.cors:enable=true" in ''/usr/share/openhab2/runtime/services.cfg''(see https://community.openhab.org/t/sse-over-rest-api/19220/7)