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from socket import *
import sys
# 准备服务器端 socket
serverSocket = socket ( AF_INET , SOCK_STREAM )
# 设定端口号
serverPort = 80
# 绑定地址（ ）
serverSocket . bind ( ( " localhost " , serverPort ) )
# 开始 TCP 监听，该值至少为 1
serverSocket . listen ( 1 )
while True :
# 建立连接
print ( ' Ready to serve... ' )
# 收到客户端请求时建立一个新连接
connectionSocket , addr = serverSocket . accept ( )
try :
# 按需补充，接受来自客户端的请求
message = connectionSocket . recv ( 1024 ) . decode ( )
# 从消息中提取所请求对象的路径
# 路径是HTTP标头的第二部分，
filename = message . split ( ) [ 1 ]
# 因为HTTP请求的提取路径包括一个字符“ \”，我们从第二个字符读取路径
f = open ( filename [ 1 : ] )
# 将请求文件的全部内容存储在临时缓冲区中
outputdata = f . read ( )
# 将HTTP响应标头行发送到连接套接字
connectionSocket . send ( " HTTP/1.1 200 OK \r \n \r \n " . encode ( ) )
# 将请求文件的内容发送到客户端
for i in range ( 0 , len ( outputdata ) ) :
connectionSocket . send ( outputdata [ i ] . encode ( ) )
connectionSocket . send ( " \r \n " . encode ( ) )
connectionSocket . close ( )
except IOError :
# 按需补充代码：发送未找到文件的响应消息
connectionSocket . send ( " HTTP/1.1 404 Not Found \r \n \r \n " . encode ( ) )
connectionSocket . send ( " <html><head></head><body><h1>404 Not Found</h1></body></html> \r \n " . encode ( ) )
# 按需补充代码：关闭客户端 socket
connectionSocket . close ( )
serverSocket . close ( )
sys . exit ( )
