async def run_wsgi_feeder(self, scope: Scope, receive: Receive,
fut: Awaitable[None], input_io: BytesIO):
while not fut.done():
event = await receive()
if event["type"] == "http.disconnect":
input_io.close()
break
# Use exponential back-off until each attempt is 30 seconds apart.
b = 0
while len(input_io.getbuffer()) > 1024 * 1024:
await asyncio.sleep(0.1 * (1.1**b))
if b < 60:
b += 1
input_io.write(event.get("body", b""))
if not event.get("more_body", False):
input_io.close()
break
