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wsgi协议的服务器
import socket import re
import multiprocessing
import time
import mini_frame05
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 __del__(self):
# 6. 关闭监听套接字
self.tcp_server_socket.close()
def service_client(self, new_socket):
"""为客户端返回数据"""
# 1.接收浏览器发送过来的request请求(符合http协议的格式) ，即http请求
# GET /index.html HTTP/1.1
request = new_socket.recv(1024).decode("utf-8")
request_lines = request.splitlines()
print("")
print(">" * 20)
print(request_lines)
# 2.通过正则解析 GET /index.html HTTP/1.1 获取文件名 即 /index.html
file_name = ""
ret = re.match(r"[^/]+(/[^ ]*)", request_lines[0])
if ret:
file_name = ret.group(1)
if file_name == "/":
file_name = "/index.html"
# 3. 通过文件名 /index.html 打开文件读取数据后 组织符合http格式的response
# 即应答报文 header + body 给浏览器
if not file_name.endswith(".py"): # 静态资源
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:
# 3.1 准备发送给浏览器的数据---response_header
response_header = "HTTP/1.1 200 OK\r\n"
response_header += "\r\n"
# 3.2 准备发送给浏览器的数据---response_body
response_body = f.read()
f.close()
# 将response header发送给浏览器
new_socket.send(response_header.encode("utf-8"))
# 将response body发送给浏览器
new_socket.send(response_body)
# 动态资源
else:
# 传参的字典
env = dict()
env["url"] = file_name
# 调用接口
response_body = mini_frame05.application(env, self.set_reposne_header)
# 设置应答头
response_header = "HTTP/1.1 %s\r\n" % self.statue
# [('Content-Type', 'text/html'),(),()]
for i in self.headers:
response_header += "%s:%s\r\n" % (i[0],i[1])
response_header += "\r\n"
# 设置应答体
response = response_header + response_body
new_socket.send(response.encode("utf-8"))
# 关闭套接
new_socket.close()
def set_reposne_header(self, statue, headers):
self.statue = statue
self.headers = headers
def run_for_ever(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()
def main():
"""业务流程"""
my_web_server = WebServer()
my_web_server.run_for_ever()
if __name__ == "__main__":
main()
简单处理wsgi服务器请求的框架
# 符合wsgi协议的接口
# environ(字典):存储请求信息 /index.py
# start_response(函数的引用):response_header
# 1状态码
# 2headers
# return:返回response_body
def index():
return "index is show"
def center():
return "center is show"
def profile():
return "profile is show"
def application(environ, start_response):
file_name = environ["url"]
start_response('200 OK', [('Content-Type', 'text/html; charset=utf-8')])
if file_name == "/index.py":
return index()
elif file_name == "/center.py":
return center()
elif file_name == "/profile.py":
return profile()
else:
return "%s 没有发现对象的函数" % file_name
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