def response(self, environ, start_response):
""" Respone from WSGI environ.
"""
request = Request(environ)
try:
self.handle_before_request(request)
rsp = self.match(request)()
if is_async(rsp):
rsp = yield from rsp
response = self.make_response(rsp)
except HTTPError as err:
response = self.make_error_response(err, request)
except Exception as exc:
self.log_exception(exc)
response = self.make_error_response(HTTPError(500))
response = self.handle_after_request(response)
return response.send(environ, start_response)