如何在不使用任何库的情况下在python中向服务器发送HTTP请求并获得应答

import socket

def send_http_request(host, port, path):
    # 创建一个TCP socket
    client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    
    # 连接服务器
    client_socket.connect((host, port))
    
    # 构造HTTP请求
    request = f"GET {path} HTTP/1.1\r\nHost: {host}\r\n\r\n"
    
    # 发送请求
    client_socket.sendall(request.encode())
    
    # 接收响应
    response = b""
    while True:
        data = client_socket.recv(1024)
        if not data:
            break
        response += data
    
    # 关闭连接
    client_socket.close()
    
    # 解析并返回响应
    return response.decode()

# 示例用法
response = send_http_request("example.com", 80, "/")
print(response)