New submission from Darren Skidmore <darrenrs0...@gmail.com>:
As of Python 3.9.1, when attempting to perform any SSL requests when a packet sniffer tool (e.g. Telerik Fiddler) is intercepting SSL traffic, the program will hang for about a minute and then crash with a WRONG_VERSION_NUMBER error. This has been tested to occur with urllib2 and requests modules. Alternatives such as verify=False and adding the Fiddler Root Certificate to Python's cacert.pem file do not rectify this error. This traceback was generated when attempting to access https://example.com:443 while Fiddler 5.0.20204.45441 was open: Traceback (most recent call last): File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\site-packages\urllib3\connectionpool.py", line 696, in urlopen self._prepare_proxy(conn) File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\site-packages\urllib3\connectionpool.py", line 964, in _prepare_proxy conn.connect() File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\site-packages\urllib3\connection.py", line 359, in connect conn = self._connect_tls_proxy(hostname, conn) File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\site-packages\urllib3\connection.py", line 496, in _connect_tls_proxy return ssl_wrap_socket( File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\site-packages\urllib3\util\ssl_.py", line 432, in ssl_wrap_socket ssl_sock = _ssl_wrap_socket_impl(sock, context, tls_in_tls) File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\site-packages\urllib3\util\ssl_.py", line 474, in _ssl_wrap_socket_impl return ssl_context.wrap_socket(sock) File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\ssl.py", line 500, in wrap_socket return self.sslsocket_class._create( File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\ssl.py", line 1040, in _create self.do_handshake() File "C:\Users\Darren\AppData\Local\Programs\Python\Python39\lib\ssl.py", line 1309, in do_handshake self._sslobj.do_handshake() ssl.SSLError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1123) This exact question has recently been asked on StackOverflow: https://stackoverflow.com/questions/65516325/ssl-wrong-version-number-on-python-request ---------- assignee: christian.heimes components: SSL messages: 385476 nosy: christian.heimes, darrenrs priority: normal severity: normal status: open title: All SSL requests fail with WRONG_VERSION_NUMBER when a packet sniffer is open type: crash versions: Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue43000> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
