facebook/tornado — pull request #469 by screeley (2012-02-23 15:04:51+00:00)
Title: Allow OPTIONS method to SimpleAsyncHTTPClient

SimpleAsyncHTTPClient does not allow OPTIONS requests. This is a pain when you are trying to write test cases for CORS. This simple patch adds OPTIONS to the supported _SUPPORTED_METHODS in
_HTTPConnection and a test case to go along with it.