tornado.platform.twisted
— Bridges between Twisted and Tornado¶
Deprecated since version 6.0: This module is no longer recommended for new code. Instead of using
direct integration between Tornado and Twisted, new applications should
rely on the integration with asyncio
provided by both packages.
Importing this module has the side effect of registering Twisted’s Deferred
class with Tornado’s @gen.coroutine
so that Deferred
objects can be
used with yield
in coroutines using this decorator (importing this module has
no effect on native coroutines using async def
).
- tornado.platform.twisted.install()¶
Install
AsyncioSelectorReactor
as the default Twisted reactor.Deprecated since version 5.1: This function is provided for backwards compatibility; code that does not require compatibility with older versions of Tornado should use
twisted.internet.asyncioreactor.install()
directly.Changed in version 6.0.3: In Tornado 5.x and before, this function installed a reactor based on the Tornado
IOLoop
. When that reactor implementation was removed in Tornado 6.0.0, this function was removed as well. It was restored in Tornado 6.0.3 using theasyncio
reactor instead.
Twisted DNS resolver¶
- class tornado.platform.twisted.TwistedResolver¶
Twisted-based asynchronous resolver.
This is a non-blocking and non-threaded resolver. It is recommended only when threads cannot be used, since it has limitations compared to the standard
getaddrinfo
-basedResolver
andDefaultExecutorResolver
. Specifically, it returns at most one result, and arguments other thanhost
andfamily
are ignored. It may fail to resolve whenfamily
is notsocket.AF_UNSPEC
.Requires Twisted 12.1 or newer.
Changed in version 5.0: The
io_loop
argument (deprecated since version 4.1) has been removed.Deprecated since version 6.2: This class is deprecated and will be removed in Tornado 7.0. Use the default thread-based resolver instead.