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import asyncio
async def application(scope, receive, send):
assert scope['type'] == 'http'
body = b''
while True:
m = await receive()
body += m.get('body', b'')
if not m.get('more_body', False):
break
headers = scope.get('headers', [])
def get_header(n, v=None):
for h in headers:
if h[0] == n:
return h[1]
return v
parts = int(get_header(b'x-parts', 1))
delay = int(get_header(b'x-delay', 0))
loop = asyncio.get_event_loop()
async def sleep(n):
future = loop.create_future()
loop.call_later(n, future.set_result, None)
await future
await send(
{
'type': 'http.response.start',
'status': 200,
'headers': [(b'content-length', str(len(body)).encode()),],
}
)
if not body:
await sleep(delay)
return
step = int(len(body) / parts)
for i in range(0, len(body), step):
await send(
{
'type': 'http.response.body',
'body': body[i : i + step],
'more_body': True,
}
)
await sleep(delay)
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