如何将TLS 1.0与Python 3.8一起使用?

Question

我有一个使用模块与 Jira 连接的代码jira。
不幸的是，Jira服务器仅支持SSLv3和TLS1。
我知道它们是旧协议，主机将在今年年底之前接受新协议。
但在此之前，我需要我的 python 代码使用TLS1在 Jira 上进行连接。

使用 Python 3.6 它工作正常，但在 Python 3.8 中它不起作用，它向我显示了下面的错误消息。

Python 3.8.2 (default, Apr 27 2020, 15:53:34) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from jira import JIRA
>>> import urllib3
>>> urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
>>> 
>>> options = {"server": "https://jira.mycompany.com/", "verify": False}
>>> jira = JIRA(options, auth=("user", "pass"))
WARNING:root:HTTPSConnectionPool(host='jira.mycompany.com', port=443): Max retries exceeded with url: /rest/auth/1/session (Caused by SSLError(SSLError(1, '[SSL: UNSUPPORTED_PROTOCOL] unsupported protocol (_ssl.c:1108)'))) while doing POST https://jira.mycompany.com/rest/auth/1/session [{'data': '{"username": "user", "password": "pass"}', 'headers': {'User-Agent': 'python-requests/2.23.0', 'Accept-Encoding': 'gzip, deflate', 'Accept': 'application/json,*.*;q=0.9', 'Connection': 'keep-alive', 'Cache-Control': 'no-cache', 'Content-Type': 'application/json', 'X-Atlassian-Token': 'no-check'}}]
WARNING:root:Got ConnectionError [HTTPSConnectionPool(host='jira.mycompany.com', port=443): Max retries exceeded with url: /rest/auth/1/session (Caused by SSLError(SSLError(1, '[SSL: UNSUPPORTED_PROTOCOL] unsupported protocol (_ssl.c:1108)')))] errno:None on POST https://jira.mycompany.com/rest/auth/1/session
{'response': None, 'request': <PreparedRequest [POST]>}{'response': None, 'request': <PreparedRequest [POST]>}
WARNING:root:Got recoverable error from POST https://jira.mycompany.com/rest/auth/1/session, will retry [1/3] in 7.597192960254091s. Err: HTTPSConnectionPool(host='jira.mycompany.com', port=443): Max retries exceeded with url: /rest/auth/1/session (Caused by SSLError(SSLError(1, '[SSL: UNSUPPORTED_PROTOCOL] unsupported protocol (_ssl.c:1108)')))

我已经检查过并且OpenSSL支持TLS1。

$ openssl s_client -help 2>&1  > /dev/null | egrep "-(ssl|tls)[^a-z]"
-ssl_config val            Use specified configuration file
-tls1                      Just use TLSv1
-tls1_1                    Just use TLSv1.1
-tls1_2                    Just use TLSv1.2
-tls1_3                    Just use TLSv1.3
-ssl_client_engine val     Specify engine to be used for client certificate operations

仅使用requests它给了我相同的结果。

python3 -c "import requests; requests.get('https://jira.mycompany.com/')"
Traceback (most recent call last):
File "/home/lazize/repos/myproj/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 670, in urlopen
httplib_response = self._make_request(
File "/home/lazize/repos/myproj/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 381, in _make_request
self._validate_conn(conn)
File "/home/lazize/repos/myproj/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 976, in _validate_conn
conn.connect()
File "/home/lazize/repos/myproj/venv/lib/python3.8/site-packages/urllib3/connection.py", line 361, in connect
self.sock = ssl_wrap_socket(
File "/home/lazize/repos/myproj/venv/lib/python3.8/site-packages/urllib3/util/ssl_.py", line 377, in ssl_wrap_socket
return context.wrap_socket(sock, server_hostname=server_hostname)
File "/usr/lib/python3.8/ssl.py", line 500, in wrap_socket
return self.sslsocket_class._create(
File "/usr/lib/python3.8/ssl.py", line 1040, in _create
self.do_handshake()
File "/usr/lib/python3.8/ssl.py", line 1309, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: UNSUPPORTED_PROTOCOL] unsupported protocol (_ssl.c:1108)

如何将 Python 3.8 与TLS1一起使用？

Answer 1

我在下面解决了安装python软件包的问题。
这样它安装了pyOpenSSL.

让我引用文档：

如果您使用secure额外安装 urllib3，则所有必需的软件包 将安装证书验证。

pip install urllib3[secure]

如果我理解正确的 Python 带有自己的SSL通过模块ssl实现。
以这种方式安装urllib3将强制 Python 通过pyOpenSSL使用OpenSSL实现。