2011-06-22 05:28:20 +00:00
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What's new in Tornado 2.0
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=========================
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Jun 21, 2011
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------------
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::
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Major changes:
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* Template output is automatically escaped by default; see backwards
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compatibility note below.
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* The default AsyncHTTPClient implementation is now simple_httpclient.
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* Python 3.2 is now supported.
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Backwards compatibility:
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* Template autoescaping is enabled by default. Applications upgrading from
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a previous release of Tornado must either disable autoescaping or adapt
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their templates to work with it. For most applications, the simplest
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way to do this is to pass autoescape=None to the Application constructor.
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2011-06-28 06:04:52 +00:00
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Note that this affects certain built-in methods, e.g. xsrf_form_html
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and linkify, which must now be called with {% raw %} instead of {}
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2011-06-22 05:28:20 +00:00
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* Applications that wish to continue using curl_httpclient instead of
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simple_httpclient may do so by calling
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AsyncHTTPClient.configure("tornado.curl_httpclient.CurlAsyncHTTPClient")
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at the beginning of the process. Users of Python 2.5 will probably want
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to use curl_httpclient as simple_httpclient only supports ssl on Python 2.6+.
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* Python 3 compatibility involved many changes throughout the codebase,
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so users are encouraged to test their applications more thoroughly than
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usual when upgrading to this release.
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Other changes in this release:
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* Templates support several new directives:
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- {% autoescape ...%} to control escaping behavior
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- {% raw ... %} for unescaped output
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- {% module ... %} for calling UIModules
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* {% module Template(path, **kwargs) %} may now be used to call another
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template with an independent namespace
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* All IOStream callbacks are now run directly on the IOLoop via add_callback.
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* HTTPServer now supports IPv6 where available. To disable, pass
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family=socket.AF_INET to HTTPServer.bind().
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* HTTPClient now supports IPv6, configurable via allow_ipv6=bool on the
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HTTPRequest. allow_ipv6 defaults to false on simple_httpclient and true
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on curl_httpclient.
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* RequestHandlers can use an encoding other than utf-8 for query parameters
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by overriding decode_argument()
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* Performance improvements, especially for applications that use a lot of
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IOLoop timeouts
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* HTTP OPTIONS method no longer requires an XSRF token.
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* JSON output (RequestHandler.write(dict)) now sets Content-Type to
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application/json
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* Etag computation can now be customized or disabled by overriding
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RequestHandler.compute_etag
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* USE_SIMPLE_HTTPCLIENT environment variable is no longer supported.
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Use AsyncHTTPClient.configure instead.
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