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v2.4.0.rst

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What's new in Tornado 2.4

Sep 4, 2012

General

  • Fixed Python 3 bugs in tornado.auth, tornado.locale, and tornado.wsgi.

HTTP clients

  • Removed max_simultaneous_connections argument from tornado.httpclient (both implementations). This argument hasn't been useful for some time (if you were using it you probably want max_clients instead)
  • tornado.simple_httpclient now accepts and ignores HTTP 1xx status responses.

tornado.ioloop and tornado.iostream

  • Fixed a bug introduced in 2.3 that would cause .IOStream close callbacks to not run if there were pending reads.
  • Improved error handling in .SSLIOStream and SSL-enabled .TCPServer.
  • SSLIOStream.get_ssl_certificate now has a binary_form argument which is passed to SSLSocket.getpeercert.
  • SSLIOStream.write can now be called while the connection is in progress, same as non-SSL .IOStream (but be careful not to send sensitive data until the connection has completed and the certificate has been verified).
  • .IOLoop.add_handler cannot be called more than once with the same file descriptor. This was always true for epoll, but now the other implementations enforce it too.
  • On Windows, .TCPServer uses SO_EXCLUSIVEADDRUSER instead of SO_REUSEADDR.

tornado.template

  • {% break %} and {% continue %} can now be used looping constructs in templates.
  • It is no longer an error for an if/else/for/etc block in a template to have an empty body.

tornado.testing

  • New class tornado.testing.AsyncHTTPSTestCase is like .AsyncHTTPTestCase. but enables SSL for the testing server (by default using a self-signed testing certificate).
  • tornado.testing.main now accepts additional keyword arguments and forwards them to unittest.main.

tornado.web

  • New method .RequestHandler.get_template_namespace can be overridden to add additional variables without modifying keyword arguments to render_string.
  • .RequestHandler.add_header now works with .WSGIApplication.
  • .RequestHandler.get_secure_cookie now handles a potential error case.
  • RequestHandler.__init__ now calls super().__init__ to ensure that all constructors are called when multiple inheritance is used.
  • Docs have been updated with a description of all available :pyApplication settings <tornado.web.Application.settings>

Other modules

  • .OAuthMixin now accepts "oob" as a callback_uri.
  • .OpenIdMixin now also returns the claimed_id field for the user.
  • tornado.platform.twisted shutdown sequence is now more compatible.
  • The logging configuration used in tornado.options is now more tolerant of non-ascii byte strings.