Tornado 4.5.3 发布，Python Web 框架和异步网络库

Tornado 是使用 Python 开发的全栈式（full-stack）Web 框架和异步网络库，最早由 Friendfeed 开发。通过使用非阻塞 IO，Tornado 可以处理数以万计的开放连接，是 long polling、WebSockets 和其他需要为用户维护长连接应用的理想选择。

Tornado 4.5.3 已发布，更新如下：

tornado.curl_httpclient

• Improved debug logging on Python 3.

tornado.httpserver

• Content-Length and Transfer-Encoding headers 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.

tornado.iostream

• Writing a memoryview can no longer result in “BufferError: Existing exports of data: object cannot be re-sized”.

tornado.options

• Duplicate option names are now detected properly whether they use hyphens or underscores.

tornado.testing

• .AsyncHTTPTestCase.fetch now uses 127.0.0.1 instead of localhost, improving compatibility with systems that have partially-working ipv6 stacks.

tornado.web

• It is no longer allowed to send a body with 1xx or 204 responses.

tornado.websocket

• Requests with invalid websocket headers now get a response with status code 400 instead of a closed connection.

下载地址：

•  Source code (zip)
•  Source code (tar.gz)

转自 http://www.oschina.net/news/92204/tornado-4-5-3