What’s new in Tornado 4.0.2

Sept 10, 2014

Fixed a bug that could sometimes cause a timeout to fire after being cancelled.
AsyncTestCase once again passes along arguments to test methods, making it compatible with extensions such as Nose’s test generators.
StaticFileHandler can again compress its responses when gzip is enabled.
simple_httpclient passes its max_buffer_size argument to the underlying stream.
Fixed a reference cycle that can lead to increased memory consumption.
add_accept_handler will now limit the number of times it will call accept per IOLoop iteration, addressing a potential starvation issue.
Improved error handling in IOStream.connect (primarily for FreeBSD systems)