有没有办法设置一个python套接字，让服务器只在客户端请求更新值时发送？

import socket

# 创建套接字
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 绑定IP地址和端口号
server_address = ('localhost', 8888)
server_socket.bind(server_address)

# 监听客户端连接
server_socket.listen(1)

while True:
    print('等待客户端连接...')
    client_socket, client_address = server_socket.accept()
    print('客户端已连接:', client_address)

    while True:
        # 接收客户端请求
        request = client_socket.recv(1024).decode()

        if request == 'update':
            # 处理更新请求
            # 更新值的逻辑代码...

            # 发送更新后的值给客户端
            response = '更新后的值'
            client_socket.send(response.encode())

        elif request == 'exit':
            # 客户端请求退出
            break

    # 关闭客户端连接
    client_socket.close()

# 关闭服务器套接字
server_socket.close()