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Mode / Multicast

Launch the server in multicast mode to synchronize browser state across a user's clients. Open /demo in multiple browsers and watch them synchronize in realtime.

from h2o_wave import main, app, Q, ui, pack

@app('/demo', mode='multicast')
async def serve(q: Q):
count = q.user.count or 0
if 'increment' in q.args:
count += 1
q.user.count = count

items = pack([ui.button(name='increment', label=f'Count={count}')])

if count > 0:
form =['example']
form.items = items
else:['example'] = ui.form_card(box='1 1 2 1', items=items)


Tags:  modemulticast