web-服务器

import multiprocessing
import re
import socket

from dynamic import mini_frame

class Wsgi(object):
"""web服务器类"""

def __init__(self):
# 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)
# 绑定
self.tcp_server_socket.bind(("", 7890))
# 变为监听套接字
self.tcp_server_socket.listen(128)

def service_client(self, new_socket):
"""用来为客户端发送数据"""
# 接收浏览器发送过来的请求，http请求
request = new_socket.recv(1024).decode("utf-8")
request_lines = request.splitlines() # 请求内容列表
print(request_lines)

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

# 返回http格式数据给浏览器
if not file_name.endswith(".html"):
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(request.encode("utf-8"))
else:
html_content = f.read()
f.close()
response = "HTTP/1.1 200 OK\r\n"
response += "\r\n"
# reponse += html_content
new_socket.send(response.encode("utf-8"))
new_socket.send(html_content)

else:
env = dict()
env["PATH_INFO"] = file_name
body = mini_frame.application(env, self.set_response_header)

header = "HTTP/1.1 %s" % self.status
for temp in self.headers:
header += "%s:%s\r\n" % (temp[0], temp[1])

header += "\r\n"

response = header + body

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

new_socket.close()

def set_response_header(self, status, headers):
self.status = status
self.headers = headers

def run_forver(self):
"""用来完成整体的控制"""
while True:
# 等待客户端套接字的链接
new_socket, client_addr = self.tcp_server_socket.accept()
p = multiprocessing.Process(target=self.service_client, args=(new_socket,))
p.start()

new_socket.close()

# 关闭监听套接字
self.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run-forver方法运行"""
    wsgi_server = Wsgi()
    wsgi_server.run_forver()

if __name__ == "__main__":
main()