请求忽略设置 OP_NO_SSLv3

Question

我正在尝试获取私有服务器上的域，但请求不断失败并出现 sslv3 警报握手失败。

我已经根据博客 post 这里 https://lukasa.co.uk/2017/02/Configuring_TLS_With_Requests/ 配置会话忽略 sslv3 但它继续在异常消息中将其用作 statet。

知道我在这里做错了什么吗？

这是我的最小脚本：

import ssl
import requests
from requests.adapters import HTTPAdapter
from requests.packages.urllib3.util.ssl_ import create_urllib3_context

CIPHERS = (
    'ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+HIGH:'
    'DH+HIGH:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+HIGH:RSA+3DES:!aNULL:'
    '!eNULL:!MD5'
)

class DESAdapter(HTTPAdapter):
    """
    A TransportAdapter that re-enables 3DES support in Requests.
    """
    def create_ssl_context(self):
        ctx = ssl.create_default_context()
        # opt out the SSLv3
        ctx.options |= ssl.OP_NO_SSLv3
        ctx.set_ciphers( CIPHERS )
        return ctx

    def init_poolmanager(self, *args, **kwargs):
        kwargs['ssl_context'] = self.create_ssl_context()
        return super(DESAdapter, self).init_poolmanager(*args, **kwargs)

    def proxy_manager_for(self, *args, **kwargs):
        kwargs['ssl_context'] = self.create_ssl_context()
        return super(DESAdapter, self).proxy_manager_for(*args, **kwargs)

s = requests.Session()
s.mount('https://my-broken-intranet-domain.net:4942', DESAdapter())

# This will throw the error:
r = s.get('https://my-broken-intranet-domain.net:4942')

发生异常：requests.exceptions.SSLError HTTPSConnectionPool(host='my-broken-intranet-domain.net', port=4942): Max retries exceeded with url: / (由 SSLError(SSLError(1, '[SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure ( _ssl.c:1056)')))

使用Curl，请求通过，协商的CIPHER和TLS为：

curl -v https://my-broken-intranet-domain.net:4942

...
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / DES-CBC3-SHA
* ALPN, server did not agree to a protocol
Versions:
Python 3.7.2

请求版本：2.21.0
urllib3 版本：1.24.1
打开SSL 1.1.0j

感谢您的帮助！

Answer 1

请求忽略设置 OP_NO_SSLv3

Requests ignoring setting OP_NO_SSLv3

python-requests

python-requests-html