服务器实现WSGI

import socket
import re
import multiprocessing

from mini_web_04 import  *

class WebServer(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(("", 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"



        # 根据不同的后缀去判断(如果是.py结尾,那么动态返回数据,如果不是静态)
        if file_name.endswith(".py"):
            #
            # #返回动态的数据
            # if file_name == "/index.py":
            #     head =  "HTTP/1.1 200 OK\r\n"
            #     body = "index.py"
            #     content = head + "\r\n" + body
            #
            #     new_socket.send(content.encode("utf-8"))
            #
            # else:
            #     #告诉用户不存这个页面
            #     head = "HTTP/1.1 200 OK\r\n"
            #     body = "not page find !"
            #     content = head + "\r\n" + body
            #
            #     new_socket.send(content.encode("utf-8"))

            url_params = dict()  #给mini_web传参数的
            url_params['file_name'] = file_name

            body = application(url_params,self.head_params)

            head = "HTTP/1.1 %s\r\n"%self.stauts

            #拼接我们的响应头
            for temp in self.params:
                head += "%s:%s\r\n"%temp


            content = head + "\r\n" + body

            new_socket.send(content.encode("utf-8"))



        else:
            #返回静态的数据

        # 2. 返回http格式的数据，给浏览器

            try:
                f = open("./static" + 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 run_server(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()

            # 5. 为这个客户端服务
            p = multiprocessing.Process(target=self.service_client, args=(new_socket,))
            p.start()

            new_socket.close()


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

    def head_params(self,stauts,params):
        """ 把响应头存起来进行后期的拼接"""
        self.stauts = stauts
        self.params = params

def main():
    server = WebServer()
    server.run_server()


if __name__ == "__main__":
    main()