加上了 self.write_error(404, None) 和 self.send()，依然empty response
有报错
2019-10-18 14:34:43,829 - base_http_handler.py[line:38] - ERROR:not enough values to unpack (expected 3, got 0)
Traceback (most recent call last):
File "C:\pythonlearning\HTTPLearning\httpserver\handler\base_http_handler.py", line 24, in handle
if not self.parse_request():
File "C:\pythonlearning\HTTPLearning\httpserver\handler\base_http_handler.py", line 64, in parse_request
self.method, self.path, self.version = words
ValueError: not enough values to unpack (expected 3, got 0)
