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# -*- coding: utf-8 -*-
"""Submodule containing the implementation for the FingerprintAdapter.
This file contains an implementation of a Transport Adapter that validates
the fingerprints of SSL certificates presented upon connection.
"""
from requests.adapters import HTTPAdapter
from .._compat import poolmanager
class FingerprintAdapter(HTTPAdapter):
"""
A HTTPS Adapter for Python Requests that verifies certificate fingerprints,
instead of certificate hostnames.
Example usage:
.. code-block:: python
import requests
import ssl
from requests_toolbelt.adapters.fingerprint import FingerprintAdapter
twitter_fingerprint = '...'
s = requests.Session()
s.mount(
'https://twitter.com',
FingerprintAdapter(twitter_fingerprint)
)
The fingerprint should be provided as a hexadecimal string, optionally
containing colons.
"""
__attrs__ = HTTPAdapter.__attrs__ + ['fingerprint']
def __init__(self, fingerprint, **kwargs):
self.fingerprint = fingerprint
super(FingerprintAdapter, self).__init__(**kwargs)
def init_poolmanager(self, connections, maxsize, block=False):
self.poolmanager = poolmanager.PoolManager(
num_pools=connections,
maxsize=maxsize,
block=block,
assert_fingerprint=self.fingerprint)
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