Graceful example worked fails on browser reconnect

[Oleg A.]

Gathering tasks in worker may fail all worker on a single failed connection, since gather will raise an exception.

aiohttp-sse/examples/graceful_shutdown.py

Lines 29 to 46 in be53173

 async def worker(app): 
     while True: 
         now = datetime.now() 
         delay = asyncio.create_task(asyncio.sleep(1))  # Fire 
  
         fs = [] 
         for stream in app["streams"]: 
             data = { 
                 "time": f"Server Time : {now}", 
                 "last_event_id": stream.last_event_id, 
             } 
             fs.append(stream.send_json(data, id=now.timestamp())) 
  
         # Run in parallel 
         await asyncio.gather(*fs) 
  
         # Sleep 1s - n 
         await delay