user serverside events for all updates, from the first message
the client id can be retrieved

localhost:8000/update

get the actual data for the chart:

localhost:8000/graph?variables=tt,treg.set.reg&time=-1800,0&id=<client-id>

activate updates for chart:

localhost:8000/graphupdate?id=<client-id>


Start without main and blocks:

localhost:8000/?sg=1&sm=0&sc=0