我正在使用Python和requests爬取一些内部页面。我已经关闭了SSL验证和警告。
requests.packages.urllib3.disable_warnings()
page = requests.get(url, verify=False)
在某些服务器上,我遇到了一个SSL错误,我无法解决。
Traceback (most recent call last):
File "scraper.py", line 6, in <module>
page = requests.get(url, verify=False)
File "/cygdrive/c/Users/jfeocco/VirtualEnv/scraping/lib/python3.4/site-packages/requests/api.py", line 71, in get
return request('get', url, params=params, **kwargs)
File "/cygdrive/c/Users/jfeocco/VirtualEnv/scraping/lib/python3.4/site-packages/requests/api.py", line 57, in request
return session.request(method=method, url=url, **kwargs)
File "/cygdrive/c/Users/jfeocco/VirtualEnv/scraping/lib/python3.4/site-packages/requests/sessions.py", line 475, in request
resp = self.send(prep, **send_kwargs)
File "/cygdrive/c/Users/jfeocco/VirtualEnv/scraping/lib/python3.4/site-packages/requests/sessions.py", line 585, in send
r = adapter.send(request, **kwargs)
File "/cygdrive/c/Users/jfeocco/VirtualEnv/scraping/lib/python3.4/site-packages/requests/adapters.py", line 477, in send
raise SSLError(e, request=request)
requests.exceptions.SSLError: [SSL: SSL_NEGATIVE_LENGTH] dh key too small (_ssl.c:600)
这种问题在Cygwin内外,在Windows和OSX系统中都会出现。我的研究提示服务器上的OpenSSL版本过旧。我希望能够在客户端解决这个问题。
编辑: 通过使用一组密码,我成功地解决了这个问题。
import requests
requests.packages.urllib3.util.ssl_.DEFAULT_CIPHERS += 'HIGH:!DH:!aNULL'
try:
requests.packages.urllib3.contrib.pyopenssl.DEFAULT_SSL_CIPHER_LIST += 'HIGH:!DH:!aNULL'
except AttributeError:
# no pyopenssl support used / needed / available
pass
page = requests.get(url, verify=False)