def work(input_queue=self.input_queue, output_queue=self.output_queue):
while True:
try:
data, addr = input_queue.get()
request = dns.parse(data)
response = handler.handle(request)
output = dns.construct_response(request, response)
output_queue.put((output, addr))
except KeyboardInterrupt:
break
except Exception as e:
logging.error('Got exception: %r', e, exc_info=True)
def handle_read(self):
data = self.recv(514)
if not data:
return
# Add to the buffer
self.buffer += data
data = self.buffer
if len(data) < 2:
return
if self.size is None:
self.size, = struct.unpack('!H', data[:2])
packet = data[2:2 + self.size]
diff = len(packet) - self.size
if diff < 0:
return
else:
self.buffer = self.buffer[2 + len(packet):]
request = dns.parse(packet)
response = self.handler.handle(request)
output = dns.construct_response(request, response)
self.send(struct.pack('!H', len(output)) + output)
self.close()