What’s new in Tornado 4.5.3¶
Jan 6, 2018¶
Improved debug logging on Python 3.
Transfer-Encodingheaders are no longer sent with 1xx or 204 responses (this was already true of 304 responses).
Reading chunked requests no longer leaves the connection in a broken state.
memoryviewcan no longer result in “BufferError: Existing exports of data: object cannot be re-sized”.
Duplicate option names are now detected properly whether they use hyphens or underscores.
localhost, improving compatibility with systems that have partially-working ipv6 stacks.
It is no longer allowed to send a body with 1xx or 204 responses.
Requests with invalid websocket headers now get a response with status code 400 instead of a closed connection.