Using asyncio in Python to Implement TCP/UDP Socket Programming

Environmental construction and preparation work: Firstly, ensure that you have installed the Python 3 version. 2. Install the asyncio library by running the following command: shell pip install asyncio Dependent class libraries: 1. Asynchronous: Python built-in asynchronous IO library for handling asynchronous programming. 2. Socket: Python Standard library, which provides the underlying network interface. Sample implementation: The following is a complete example of using asyncio to implement TCP and UDP Socket programming: python import asyncio #TCP Socket Example async def tcp_echo_client(message): reader, writer = await asyncio.open_connection('localhost', 8888) print(f'Send: {message!r}') writer.write(message.encode()) data = await reader.read(100) print(f'Received: {data.decode()!r}') print('Close the connection') writer.close() await writer.wait_closed() async def tcp_echo_server(): server = await asyncio.start_server(handle_echo, 'localhost', 8888) addr = server.sockets[0].getsockname() print(f'Serving on {addr}') async with server: await server.serve_forever() async def handle_echo(reader, writer): data = await reader.read(100) message = data.decode() addr = writer.get_extra_info('peername') print(f"Received {message!r} from {addr!r}") print(f"Send: {message!r}") writer.write(data) await writer.drain() print("Close the connection") writer.close() #UDP Socket Example async def udp_echo_client(message): transport, protocol = await asyncio.get_event_loop().create_datagram_endpoint( lambda: EchoClientProtocol(message), remote_addr=('localhost', 8888)) await asyncio.sleep(0.1) transport.close() class EchoClientProtocol(asyncio.DatagramProtocol): def __init__(self, message): self.message = message self.transport = None def connection_made(self, transport): self.transport = transport self.transport.sendto(self.message.encode()) def datagram_received(self, data, addr): print(f"Received {data.decode()} from {addr}") def error_received(self, exc): print('Error received:', exc) def connection_lost(self, exc): print("Connection closed") async def udp_echo_server(): sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.bind(('localhost', 8888)) while True: data, addr = await asyncio.get_event_loop().sock_recvfrom(sock, 100) message = data.decode() print(f"Received {message!r} from {addr!r}") print(f"Send: {message!r}") await asyncio.get_event_loop().sock_sendto(sock, data, addr) #Start TCP and UDP Server async def main(): tcp_server = tcp_echo_server() udp_server = udp_echo_server() await asyncio.gather(tcp_server, udp_server) asyncio.run(main()) Summary: The above is an example of using the asyncio library to implement TCP and UDP Socket programming. Asyncio provides an asynchronous IO programming model that makes handling concurrent tasks simpler and more efficient. In the example, we used the functions and classes provided by the asyncio library to handle TCP and UDP Socket communication. Through detailed code examples, we can clearly understand how to use asyncio for asynchronous programming to achieve Socket communication.