调试CRD主机

要调试CRD主机，可以按照以下步骤进行：

1. 导入所需的模块和库：

import socket
import sys

2. 创建一个socket对象：

def create_socket():
    try:
        global host
        global port
        global s
        host = ""
        port = 9999
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    except socket.error as msg:
        print("Socket creation error: " + str(msg))

3. 绑定socket对象到指定的主机和端口：

def bind_socket():
    try:
        global host
        global port
        global s
        print("Binding the Port: " + str(port))
        s.bind((host, port))
        s.listen(5)
    except socket.error as msg:
        print("Socket binding error: " + str(msg) + "\n" + "Retrying...")
        bind_socket()

4. 接收客户端的连接请求：

def socket_accept():
    conn, address = s.accept()
    print("Connection has been established! | " + "IP " + address[0] + " | Port " + str(address[1]))
    send_commands(conn)
    conn.close()

5. 发送命令给客户端：

def send_commands(conn):
    while True:
        cmd = input()
        if cmd == 'quit':
            conn.close()
            s.close()
            sys.exit()
        if len(str.encode(cmd)) > 0:
            conn.send(str.encode(cmd))
            client_response = str(conn.recv(1024), "utf-8") # 接收客户端的响应
            print(client_response, end="")

6. 调用上述定义的函数：

def main():
    create_socket()
    bind_socket()
    socket_accept()

main()

以上代码是一个简单的CRD（Create, Read, Delete）主机调试程序的示例，它可以创建一个socket对象，绑定到指定的主机和端口，并接受客户端的连接请求。然后，它可以发送命令给客户端，并接收客户端的响应。