多进程web服务器---01

代码流程

main函数设计：

• 创建套接字

• 将套接字设置成四次挥手不出bug

• 绑定套接字

• 把套接字变为监听套接字

• 循环等待客户端链接

• 接受套接字accept

• new_socket, client_addr = tcp_server_socket.accept()

• 打开进程

• 关闭新套接字

• 关闭监听套接字

service_client函数

• 新套接字recv
• 分割字符串
• 字符串匹配
• 打开html文件
• 新套接字关闭

代码

import socket
import re
import multiprocessing


def service_client(new_socket):
    """为这个客户端返回数据"""

    # 1. 接收浏览器发送过来的请求 ，即http请求
    # GET / HTTP/1.1
    # .....
    request = new_socket.recv(1024).decode("utf-8")
    # print(">>>"*50)
    # print(request)

    request_lines = request.splitlines()
    print("")
    print(">" * 20)
    print(request_lines)

    # GET /index.html HTTP/1.1
    # get post put del
    file_name = ""
    ret = re.match(r"[^/]+(/[^ ]*)", request_lines[0])
    if ret:
        file_name = ret.group(1)
        # print("*"*50, file_name)
        if file_name == "/":
            file_name = "/index.html"

    # 2. 返回http格式的数据，给浏览器

    try:
        f = open("./html" + file_name, "rb")
    except:
        response = "HTTP/1.1 404 NOT FOUND\r\n"
        response += "\r\n"
        response += "------file not found-----"
        new_socket.send(response.encode("utf-8"))
    else:
        html_content = f.read()
        f.close()
        # 2.1 准备发送给浏览器的数据---header
        response = "HTTP/1.1 200 OK\r\n"
        response += "\r\n"
        # 2.2 准备发送给浏览器的数据---boy
        # response += "hahahhah"

        # 将response header发送给浏览器
        new_socket.send(response.encode("utf-8"))
        # 将response body发送给浏览器
        new_socket.send(html_content)

    # 关闭套接
    new_socket.close()


def main():
    """用来完成整体的控制"""
    # 1. 创建套接字
    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    tcp_server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

    # 2. 绑定
    tcp_server_socket.bind(("172.16.70.64", 7890))

    # 3. 变为监听套接字
    tcp_server_socket.listen(128)



    while True:
        # 4. 等待新客户端的链接
        new_socket, client_addr = tcp_server_socket.accept()

        # 开一个进程
        p = multiprocessing.Process(target=service_client, args=(new_socket,))

        p.start()

        new_socket.close()

        # # 5. 为这个客户端服务
        # service_client(new_socket)

    # 关闭监听套接字
    tcp_server_socket.close()


if __name__ == "__main__":
    main()

面向对象改造

import socket
import re
import multiprocessing

class WSGIserver(object):

    def __init__(self):
        # 1. 创建套接字
        self.tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.tcp_server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

        # 2. 绑定
        self.tcp_server_socket.bind(("172.16.70.64", 7890))

        # 3. 变为监听套接字
        self.tcp_server_socket.listen(128)


    def service_client(self,new_socket):
        """为这个客户端返回数据"""

        # 1. 接收浏览器发送过来的请求 ，即http请求
        # GET / HTTP/1.1
        # .....
        request = new_socket.recv(1024).decode("utf-8")
        # print(">>>"*50)
        # print(request)

        request_lines = request.splitlines()
        print("")
        print(">" * 20)
        print(request_lines)

        # GET /index.html HTTP/1.1
        # get post put del
        file_name = ""
        ret = re.match(r"[^/]+(/[^ ]*)", request_lines[0])
        if ret:
            file_name = ret.group(1)
            # print("*"*50, file_name)
            if file_name == "/":
                file_name = "/index.html"

        # 2. 返回http格式的数据，给浏览器

        try:
            f = open("./html" + file_name, "rb")
        except:
            response = "HTTP/1.1 404 NOT FOUND\r\n"
            response += "\r\n"
            response += "------file not found-----"
            new_socket.send(response.encode("utf-8"))
        else:
            html_content = f.read()
            f.close()
            # 2.1 准备发送给浏览器的数据---header
            response = "HTTP/1.1 200 OK\r\n"
            response += "\r\n"
            # 2.2 准备发送给浏览器的数据---boy
            # response += "hahahhah"

            # 将response header发送给浏览器
            new_socket.send(response.encode("utf-8"))
            # 将response body发送给浏览器
            new_socket.send(html_content)

        # 关闭套接
        new_socket.close()

    def runforever(self):
        """用来完成整体的控制"""

        while True:
            # 4. 等待新客户端的链接
            new_socket, client_addr = self.tcp_server_socket.accept()

            # 开一个进程
            p = multiprocessing.Process(target=self.service_client, args=(new_socket,))

            p.start()

            new_socket.close()

            # # 5. 为这个客户端服务
            # service_client(new_socket)

        # 关闭监听套接字
        tcp_server_socket.close()




def main():
    """
    控制整体，创建一个web服务器对象，然后调用这个对象的run方法
    :return:None
    """
    wsgi_server=WSGIserver()
    wsgi_server.runforever()

if __name__=="__main__":
    main()

运行结果

前端界面是下载的网络资源

上传git

• echo“#mini_web”>> README.md 创建readme
• git init #初始化仓库
• git add README.md #提交到暂存库
• git commit -m “first commit” #提交到存储库

×author：[email protected] 欢迎交流
×github：https://github.com/zhangyuespec/mini_web