linux如何传输数据包

import socket

# 服务器端代码
def start_server(host='0.0.0.0', port=65432):
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
        s.bind((host, port))
        s.listen()
        conn, addr = s.accept()
        with conn:
            print('Connected by', addr)
            while True:
                data = conn.recv(1024)
                if not data:
                    break
                conn.sendall(data)

# 客户端代码
def send_data(host='127.0.0.1', port=65432, message='Hello, World!'):
    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
        s.connect((host, port))
        s.sendall(message.encode())
        data = s.recv(1024)
    print('Received', repr(data.decode()))

# 启动服务器
start_server()

# 发送数据
send_data()