OpenSSL Transport for asyncio #############################
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aioopenssl provides a asyncio <https://docs.python.org/3/library/asyncio.html> Transport which uses
PyOpenSSL <https://pyopenssl.readthedocs.org/> instead of the built-in ssl
module.
The transport has two main advantages compared to the original:
The TLS handshake can be deferred by passing use_starttls=True and later
calling the starttls() coroutine method.
This is useful for protocols with a STARTTLS <https://en.wikipedia.org/wiki/STARTTLS>_ feature.
A coroutine can be called during the TLS handshake; this can be used to defer
the certificate check to a later point, allowing e.g. to get user feedback
before the starttls() method returns.
This allows to ask users for certificate trust without the application layer protocol interfering or starting to communicate with the unverified peer.
.. note::
Use this module at your own risk. It has lower test coverage than I’d like it to have; it has been exported from aioxmpp on request, where it undergoes implicit testing. If you find bugs, please report them. If possible, add regression tests while you’re at it.
If you find security-critical bugs, please follow the procedure announced in
the aioxmpp readme <https://github.com/horazont/aioxmpp>_.`
Official documentation can be built with sphinx and is available online
on our servers <https://docs.zombofant.net/aioopenssl/devel/>_.