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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("Shutting down server")
async def main() -> None:
await asyncio.gather(udp_echo_server(), udp_echo_client())
if __name__ == "__main__":
asyncio.run(main())
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