python多进程的web服务器的搭建

古城微笑少年丶 2022-05-14 05:35 206阅读 0赞

web\_server项目目录：

*   web\_server
    
     *  html（文件夹）
        
         *  index.html
     *  static\_web\_server.py

static\_web\_server.py编写

import re
    import socket
    
    from multiprocessing import Process
    
    # 设置静态文件根目录
    HTML_ROOT_DIR = "./html"
    
    
    def handle_client(client_socket):
        """处理客户端请求"""
    
        # 接收客户端请求数据(报文)
        request_data = client_socket.recv(1024)
        print("request_data:", request_data)
    
        # splitlines返回的是一个列表形式
        request_lines = request_data.splitlines()
    
        print("==" * 20)
        print(request_lines)
        print("==" * 20)
        for line in request_lines:
            print(line)
    
        # 'GET / HTTP/1.1'
        request_start_line = request_lines[0]
        print("*" * 20)
        # 用户要请求的文件名(request_start_line由byte转化成str类型)
        print(request_start_line.decode("utf-8"))
        file_name = re.match(r"\w+ +(/[^ ]*) ", request_start_line.decode("utf-8")).group(1)
    
        if "/" == file_name:
            file_name = "/index.html"
    
        # 打开文件，读取内容
        try:
            file = open(HTML_ROOT_DIR + file_name, "rb")
        except IOError:
            response_start_line = "HTTP/1.1 404 Not Found\r\n"
            response_headers = "Server:My server\r\n"
            response_body = "The file is not found"
        else:
            file_data = file.read()
            file.close()
    
            # 构造相应数据
            # 构建：响应行
            # 响应的起始行
            response_start_line = "HTTP/1.1 200 OK\r\n"
            # 自己伪造的服务器的响应头
            response_headers = "Server:My server\r\n"
            # 响应体
            # response_body = "hello world"
            response_body = file_data.decode("utf-8")
    
        response = response_start_line + response_headers + "\r\n" + response_body
        print("#" * 20)
        print("response data:", response)
        print("#" * 20)
    
        # 向客户端返回响应数据
        # 字符串转化成字节
        client_socket.send(bytes(response, "utf-8"))
    
        # 关闭客户端连接
        client_socket.close()
    
    
    if __name__ == '__main__':
        server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        # 可以重复地址
        server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
        # 接收任何IP地址,端口号8000
        server_socket.bind(("", 8000))
        # 监听队列大小设成128(最多连接128个用户)
        server_socket.listen(128)
    
        # 采用多进程的用户监听
        while True:
            # 等待连接
            # 接收到的是客户端的socket，和客户端的地址
            client_socket, client_address = server_socket.accept()
            # 打印：第一个参数是：IP地址，第二个参数是：端口号（存在于client_address里，它本身是个元组）
            # print("[%s,%s]用户连接上" % (client_address[0], client_address[1]))
            print("[%s,%s]用户连接上" % client_address)
            # Process参数target应该接收的是函数名，args接收的应该是个元组
            handle_client_process = Process(target=handle_client, args=(client_socket,))
            # 开启进程
            handle_client_process.start()
            # 客户端的socket已经没有用了，关闭
            client_socket.close()

index.html的编写

<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>My Web</title>
    </head>
    <body>
        <h1>Hello</h1>
        <p>welcome to my web</p>
    
    </body>
    </html>

![70][]

![70 1][]

输出：

[127.0.0.1,3657]用户连接上
    [127.0.0.1,3658]用户连接上
    request_data: b'GET /index.html HTTP/1.1\r\nHost: 127.0.0.1:8000\r\nConnection: keep-alive\r\nCache-Control: max-age=0\r\nUpgrade-Insecure-Requests: 1\r\nUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36\r\nAccept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8\r\nAccept-Encoding: gzip, deflate, br\r\nAccept-Language: zh-CN,zh;q=0.9\r\nCookie: Hm_lvt_dde6ba2851f3db0ddc415ce0f895822e=1529392663\r\n\r\n'
    ========================================
    [b'GET /index.html HTTP/1.1', b'Host: 127.0.0.1:8000', b'Connection: keep-alive', b'Cache-Control: max-age=0', b'Upgrade-Insecure-Requests: 1', b'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36', b'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8', b'Accept-Encoding: gzip, deflate, br', b'Accept-Language: zh-CN,zh;q=0.9', b'Cookie: Hm_lvt_dde6ba2851f3db0ddc415ce0f895822e=1529392663', b'']
    ========================================
    b'GET /index.html HTTP/1.1'
    b'Host: 127.0.0.1:8000'
    b'Connection: keep-alive'
    b'Cache-Control: max-age=0'
    b'Upgrade-Insecure-Requests: 1'
    b'User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36'
    b'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8'
    b'Accept-Encoding: gzip, deflate, br'
    b'Accept-Language: zh-CN,zh;q=0.9'
    b'Cookie: Hm_lvt_dde6ba2851f3db0ddc415ce0f895822e=1529392663'
    b''
    ********************
    GET /index.html HTTP/1.1
    ####################
    response data: HTTP/1.1 200 OK
    Server:My server
    
    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>My Web</title>
    </head>
    <body>
        <h1>Hello</h1>
        <p>welcome to my web</p>
    
    </body>
    </html>
    ####################

[70]: /images/20220514/03fae1db32094cf79e236a163a01d8fa.png
[70 1]: /images/20220514/58c4264db56d44be8cca4e299f9928ff.png