我的isp拦截了外部dns服务器的返回数据，你这个东西没用啊 about pydnsproxy HOT 3 CLOSED

已添加tcp方式获取dns，可以试试

请问怎么使用tcp方式呢？

开启dns.py，我安装了python 
2.7环境，修改网卡dns为127.0.0.1,进入nslookup，查询如下：
C:\Users\ggcall>nslookup
DNS request timed out.
    timeout was 2 seconds.
默认服务器:  UnKnown
Address:  127.0.0.1

> www.sina.com
服务器:  UnKnown
Address:  127.0.0.1

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** 请求 UnKnown 超时

dns.py错误如下：
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 54994)
Traceback (most recent call last):
  File "C:\Python27\lib\SocketServer.py", line 582, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Python27\lib\SocketServer.py", line 323, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Python27\lib\SocketServer.py", line 639, in __init__
    self.handle()
  File "E:\web\pydnsproxy\dns.py", line 40, in handle
    resp = self.query_with_no_match(data)
  File "E:\web\pydnsproxy\dns.py", line 82, in get_response_normal
    return resp
UnboundLocalError: local variable 'resp' referenced before assignment
----------------------------------------

请问是什么问题？