# 時間： 2021/10/21 20:38
import socket
 
 
if __name__ == '__main__':
    # 創建tcp服務端套接字
    tcp_server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 設置端口號復用, 程序退出端口立即釋放
    tcp_server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, True)
    # 綁定端口號
    tcp_server_socket.bind(("", 8080))
    # 設置監聽
    tcp_server_socket.listen(128)
    while True:
        # 等待接受客戶端的連接請求
        new_socket, ip_port = tcp_server_socket.accept()
        # 代碼執行到此，說明連接建立成功
        recv_client_data = new_socket.recv(4096)
        # 對二進制數據進行解碼
        recv_client_content = recv_client_data.decode)
        print(recv_client_content)
        
 
        # 響應行
        response_line = "HTTP/1.1 200 OK\r\n"
        # 響應頭
        response_header = "Server: py1.0\r\n"
 
        # 響應體
        response_body = "Hello,guys!"
 
        # 拼接響應報文
        response_data = (response_line + response_header + "\r\n"+ response_body).encode()
        # 發送數據
        new_socket.send(response_data)
 
        # 關閉服務與客戶端的套接字
        new_socket.close()

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格式數據　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 += "<h1>404 not found <br> 沒有發現所請求資源</h1>"
  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準備發送給瀏覽器的數據---header
  response = "HTTP/1.1 200 OK\r\n"
  response += "\r\n"
  # 2.2準備發送給瀏覽器的數據 ---body
  # 將response header發送給瀏覽器
  new_socket.send(response.encode("utf-8"))
  # 將response body發送給瀏覽器
  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.變為套接字
 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)

 # 關閉監聽套接字
 tcp_server_socket.close()


if __name__ == '__main__':
 main()