云服务器搭建tcp服务器端

import socket

def start_server(host='0.0.0.0', port=12345):
    # 创建一个TCP/IP套接字
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    
    # 绑定套接字到地址和端口
    server_socket.bind((host, port))
    
    # 监听传入连接
    server_socket.listen(5)
    print(f"Server listening on {host}:{port}")
    
    while True:
        # 等待客户端连接
        client_socket, addr = server_socket.accept()
        print(f"Connection from {addr}")
        
        try:
            # 接收数据
            data = client_socket.recv(1024)
            if data:
                print(f"Received: {data.decode('utf-8')}")
                # 发送响应
                client_socket.sendall(b"Message received")
            else:
                print("No data received")
        finally:
            # 关闭连接
            client_socket.close()

if __name__ == "__main__":
    start_server()