What’s new in Tornado 2.3
May 31, 2012
- tornado.httpclient.HTTPClient now supports the same constructor
keyword arguments as AsyncHTTPClient.
- The max_clients keyword argument to AsyncHTTPClient.configure now works.
- tornado.simple_httpclient now supports the OPTIONS and PATCH
- tornado.simple_httpclient is better about closing its sockets
instead of leaving them for garbage collection.
- tornado.simple_httpclient correctly verifies SSL certificates for
URLs containing IPv6 literals (This bug affected Python 2.5 and 2.6).
- tornado.simple_httpclient no longer includes basic auth credentials
in the Host header when those credentials are extracted from the URL.
- tornado.simple_httpclient no longer modifies the caller-supplied header
dictionary, which caused problems when following redirects.
- tornado.curl_httpclient now supports client SSL certificates (using
the same client_cert and client_key arguments as
- HTTPServer now works correctly with paths starting with //
- HTTPHeaders.copy (inherited from dict.copy) now works correctly.
- HTTPConnection.address is now always the socket address, even for non-IP
sockets. HTTPRequest.remote_ip is still always an IP-style address
(fake data is used for non-IP sockets)
- Extra data at the end of multipart form bodies is now ignored, which fixes
a compatibility problem with an iOS HTTP client library.
IOLoop and IOStream
- IOStream now has an error attribute that can be used to determine
why a socket was closed.
- tornado.iostream.IOStream.read_until and read_until_regex are much
faster with large input.
- IOStream.write performs better when given very large strings.
- IOLoop.instance() is now thread-safe.
- tornado.options options with multiple=True that are set more than
once now overwrite rather than append. This makes it possible to override
values set in parse_config_file with parse_command_line.
- tornado.options --help output is now prettier.
- tornado.options.options now supports attribute assignment.
- Template files containing non-ASCII (utf8) characters now work on Python 3
regardless of the locale environment variables.
- Templates now support else clauses in
- tornado.web.RequestHandler now supports the PATCH HTTP method.
Note that this means any existing methods named patch in
RequestHandler subclasses will need to be renamed.
- tornado.web.addslash and removeslash decorators now send permanent
redirects (301) instead of temporary (302).
- RequestHandler.flush now invokes its callback whether there was any data
to flush or not.
- Repeated calls to RequestHandler.set_cookie with the same name now
overwrite the previous cookie instead of producing additional copies.
- tornado.web.OutputTransform.transform_first_chunk now takes and returns
a status code in addition to the headers and chunk. This is a
backwards-incompatible change to an interface that was never technically
private, but was not included in the documentation and does not appear
to have been used outside Tornado itself.
- Fixed a bug on python versions before 2.6.5 when URLSpec regexes
are constructed from unicode strings and keyword arguments are extracted.
- The reverse_url function in the template namespace now comes from
the RequestHandler rather than the Application. (Unless overridden,
RequestHandler.reverse_url is just an alias for the Application
- The Etag header is now returned on 304 responses to an If-None-Match
request, improving compatibility with some caches.
- tornado.web will no longer produce responses with status code 304
that also have entity headers such as Content-Length.