Contrib Modules¶
These modules implement various extra features, that may not be ready for prime time.
SNI-support for Python 2¶
SSL with SNI-support for Python 2. Follow these instructions if you would like to verify SSL 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 0.13)
- ndg-httpsclient (tested with 0.3.2)
- pyasn1 (tested with 0.1.6)
You can install them with the following command:
pip install pyopenssl ndg-httpsclient pyasn1
To activate certificate checking, call
inject_into_urllib3()
from your Python code
before you begin making HTTP requests. This can be done in a sitecustomize
module, or at any other time before your application begins using urllib3
,
like this:
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).
If you want to configure the default list of supported cipher suites, you can
set the urllib3.contrib.pyopenssl.DEFAULT_SSL_CIPHER_LIST
variable.
Module Variables¶
var DEFAULT_SSL_CIPHER_LIST: | |
---|---|
The list of supported SSL/TLS cipher suites. |