HTTPRequest(protocol='https', host='myhost', method='GET', uri='/pushes', version='HTTP/1.1', remote_ip='myotherhost, body='', headers={'Accept-Language': 'en-US,en;q=0.$
Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/tornado-2.4.1-py2.6.egg/tornado/web.py", line 1021, in _stack_context_handle_exception
    raise_exc_info((type, value, traceback))
  File "/usr/local/lib/python2.6/dist-packages/tornado-2.4.1-py2.6.egg/tornado/stack_context.py", line 259, in _nested
    yield vars
  File "/usr/local/lib/python2.6/dist-packages/tornado-2.4.1-py2.6.egg/tornado/stack_context.py", line 229, in wrapped
    callback(*args, **kwargs)
  File "/usr/local/lib/python2.6/dist-packages/tornado-2.4.1-py2.6.egg/tornado/gen.py", line 383, in inner
    self.set_result(key, result)
  File "/usr/local/lib/python2.6/dist-packages/tornado-2.4.1-py2.6.egg/tornado/gen.py", line 315, in set_result
    self.run()
  File "/usr/local/lib/python2.6/dist-packages/tornado-2.4.1-py2.6.egg/tornado/gen.py", line 345, in run
    yielded = self.gen.send(next)
  File "/myuser/pushmanager/servlets/pushes.py", line 23, in get
    self.finish()
  File "/usr/local/lib/python2.6/dist-packages/tornado-2.4.1-py2.6.egg/tornado/web.py", line 686, in finish
    raise RuntimeError("finish() called twice.  May be caused "
RuntimeError: finish() called twice.  May be caused by using async operations without the @asynchronous decorator.
2013-06-05 16:07:34,440 [8283|MainThread] Cannot send error response after headers written