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import asyncio
import asyncio_dgram
async def udp_echo_client() -> None:
stream = await asyncio_dgram.connect(("127.0.0.1", 8888))
await stream.send(b"Hello World!")
data, remote_addr = await stream.recv()
print(f"Client received: {data.decode()!r}")
stream.close()
async def udp_echo_server() -> None:
stream = await asyncio_dgram.bind(("127.0.0.1", 8888))
print(f"Serving on {stream.sockname}")
data, remote_addr = await stream.recv()
print(f"Echoing {data.decode()!r}")
await stream.send(data, remote_addr)
await asyncio.sleep(0.5)
print(f"Shutting down server")
def main() -> None:
loop = asyncio.get_event_loop()
loop.run_until_complete(asyncio.gather(udp_echo_server(), udp_echo_client()))
if __name__ == "__main__":
main()
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