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Fix OpenSSL error with servers that do unsafe renegotiation #19

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merged 1 commit into from
Jun 11, 2022
Merged

Fix OpenSSL error with servers that do unsafe renegotiation #19

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11 changes: 7 additions & 4 deletions what_vpn/requests.py
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Original file line number Diff line number Diff line change
@@ -1,11 +1,12 @@
import requests

from requests.adapters import HTTPAdapter
from requests.packages.urllib3.poolmanager import PoolManager
from urllib3 import PoolManager
import ssl


# https://lukasa.co.uk/2013/01/Choosing_SSL_Version_In_Requests/
# https://github.com/psf/requests/issues/4775#issuecomment-478198879
class SSLVersionAdapter(HTTPAdapter):
'''An HTTPS Transport Adapter that uses an arbitrary SSL version.'''
SSLv23 = ssl.PROTOCOL_SSLv23
Expand All @@ -18,10 +19,13 @@ def __init__(self, ssl_version=None, **kwargs):
super().__init__(**kwargs)

def init_poolmanager(self, connections, maxsize, block=False):
ssl_context = ssl.SSLContext(self.ssl_version) if self.ssl_version else ssl.SSLContext()
ssl_context.set_ciphers('DEFAULT@SECLEVEL=0')
ssl_context.options |= 1<<2 # OP_LEGACY_SERVER_CONNECT
self.poolmanager = PoolManager(num_pools=connections,
maxsize=maxsize,
block=block,
ssl_version=self.ssl_version)
ssl_context=ssl_context)


class TimeoutSession(requests.Session):
Expand All @@ -40,5 +44,4 @@ def __init__(self, *a, **kw):
super().__init__(*a, **kw)
del self.headers['user-agent']
self.verify = False
if ssl_version:
self.mount('https://', SSLVersionAdapter(ssl_version))
self.mount('https://', SSLVersionAdapter(ssl_version))