import socket # 绑定 IP 和端口 UDP_IP = "0.0.0.0" # 监听所有网络接口 UDP_PORT = 9999 sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.bind((UDP_IP, UDP_PORT)) print(f"UDP 服务器已启动,监听端口 {UDP_PORT}...") while True: data, addr = sock.recvfrom(1024) # buffer size 1024 bytes print(f"Received message from {addr}: {data.decode()}") sock.sendto(b"Message received", addr) # send response