python實現(xiàn)靜態(tài)web服務器

GET /path HTTP/1.1
 Header1: Value1
 Header2: Value2
 Header3: Value3

POST /path HTTP/1.1
 Header1: Value1
 Header2: Value2
 Header3: Value3

 body data goes here...

200 OK
 Header1: Value1
 Header2: Value2
 Header3: Value3

 body data goes here...

import socket
import re
import time


def service_client(new_socket):
 """為這個客戶端服務"""

 # 1.接收瀏覽器發(fā)送過來的請求，即ｈｔｔｐ請求
 # GET / HTTP/1.1
 # --------
 request = new_socket.recv(1024).decode('utf-8')

 # 判斷客戶端意外斷開鏈接返回空字符串
 if not request:
  # 關閉套接字并退出
  new_socket.close()
  print("==="*30)
  return

 # 分隔套接字
 request_lines = request.splitlines()
 print()
 print(">"*20)
 print(request_lines)

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

 # 2.返回http格式數(shù)據(jù)　給瀏覽器
 try:
  f = open("./html" + file_name, "rb")
 except:
  response = "HTTP/1.1 404 NOT FOUND\r\n"
  response += "Content-Type:text/html;charset=utf-8\r\n"
  response += "\r\n"
  response += "<h2>404 not found <br> 沒有發(fā)現(xiàn)所請求資源</h2>"
  response += str(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time())))
  new_socket.send(response.encode('utf-8'))
 else:
  html_content = f.read()
  f.close()
  # 2.1準備發(fā)送給瀏覽器的數(shù)據(jù)---header
  response = "HTTP/1.1 200 OK\r\n"
  response += "\r\n"
  # 2.2準備發(fā)送給瀏覽器的數(shù)據(jù) ---body
  # 將response header發(fā)送給瀏覽器
  new_socket.send(response.encode("utf-8"))
  # 將response body發(fā)送給瀏覽器
  new_socket.send(html_content)

 # 關閉套接字
 new_socket.close()


def main():
 """用來完成整體的控制"""
 # 1.創(chuàng)建套接字
 tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
 # 端口復用
 tcp_server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
 # 2.綁定
 tcp_server_socket.bind(("", 7890))
 # 3.變?yōu)樘捉幼? tcp_server_socket.listen(128)

 while True:
  # 4.等待客戶端的鏈接
  new_socket, client_addr = tcp_server_socket.accept()

  print(client_addr)

  # 5.為這個客戶端服務
  service_client(new_socket)

 # 關閉監(jiān)聽套接字
 tcp_server_socket.close()


if __name__ == '__main__':
 main()