TLS with SNI-support for Python 2. Follow these instructions if you would like to verify TLS certificates in Python 2. Note, the default libraries do not do certificate checking; you need to do additional work to validate certificates yourself.
This needs the following packages installed:
pyOpenSSL (tested with 16.0.0)
cryptography (minimum 1.3.4, from pyopenssl)
idna (minimum 2.0, from cryptography)
However, pyopenssl depends on cryptography, which depends on idna, so while we use all three directly here we end up having relatively few packages required.
You can install them with the following command:
$ python -m pip install pyopenssl cryptography idna
To activate certificate checking, call
inject_into_urllib3() from your Python code
before you begin making HTTP requests. This can be done in a
module, or at any other time before your application begins using
try: import urllib3.contrib.pyopenssl urllib3.contrib.pyopenssl.inject_into_urllib3() except ImportError: pass
Now you can use
urllib3 as you normally would, and it will support SNI
when the required modules are installed.
Activating this module also has the positive side effect of disabling SSL/TLS compression in Python 2 (see CRIME attack).
Monkey-patch urllib3 with PyOpenSSL-backed SSL-support.