为什么请求会引发此异常“check_hostname 需要 server_hostname”？

Question

p={
    'http':'http://my correct proxy here',
    'https':'https://my correct proxy here'
    }
self.response=requests.get(url=url,headers=self.headers,timeout=(6,15),proxies=p)

然后它引发异常：

Traceback (most recent call last):
  File "C:\Users\xyl13509876955\Desktop\Monitor\dicks.py", line 61, in send_request
    self.response=requests.get(url=url,headers=self.headers,timeout=(6,15),proxies=p)
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\api.py", line 76, in get
    return request('get', url, params=params, **kwargs)
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\sessions.py", line 542, in request
    resp = self.send(prep, **send_kwargs)
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\sessions.py", line 655, in send
    r = adapter.send(request, **kwargs)
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\requests\adapters.py", line 449, in send
    timeout=timeout
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connectionpool.py", line 696, in urlopen
    self._prepare_proxy(conn)
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connectionpool.py", line 964, in _prepare_proxy
    conn.connect()
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connection.py", line 359, in connect
    conn = self._connect_tls_proxy(hostname, conn)
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\connection.py", line 506, in _connect_tls_proxy
    ssl_context=ssl_context,
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\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\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\site-packages\urllib3\util\ssl_.py", line 474, in _ssl_wrap_socket_impl
    return ssl_context.wrap_socket(sock)
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\ssl.py", line 423, in wrap_socket
    session=session
  File "C:\Users\xyl13509876955\AppData\Local\Programs\Python\Python37\lib\ssl.py", line 827, in _create
    raise ValueError("check_hostname requires server_hostname")
ValueError: check_hostname requires server_hostname

请帮我解决问题，最好的方法是向我展示正确的代码。我对这个问题感到非常困惑和沮丧！！

Answer 1

作为解决方法：

pip 安装 urllib3==1.25.11

Answer 2

据我了解，在新的 urllib3 中，代理的主要架构已更改...可以在这里阅读。这个设置对我有帮助（对于 urllib3=1.26.4）。

一个老

proxy={
    'http':'8.88.888.8:8888',
    'https':'8.88.888.8:8888'
    }

新的

proxy={
    'https': 'https://8.88.888.8:8888',
    'http': 'http://8.88.888.8:8888',
    } 

更新

我再次遇到这个问题的请求 2.26.0，但这次它适用于旧模式......

proxy={
    'http':'8.88.888.8:8888',
    'https':'8.88.888.8:8888'
    }

Answer 3

我已经解决了这个问题。这是 urllib3 的一个错误。

您可以使用 pip install urllib3==1.25.8

Answer 4

降级 urllib3 也为我解决了这个问题。虽然我不得不重置代理环境变量： https_proxy="http://127.0.0.1:<PROXY_PORT>" pip install urllib3==1.25.11

没有它，我会收到以下错误，并且无法降级 urllib3（请参阅SSLError 安装 pip）。

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1091)'))': /simple/pip/

Answer 5

使用Python 3.6.9在Ubuntu 18.04上遇到了同样的问题，搜索了很多页面，最终通过反复试验修复了它。

修复方法是更改​​环境变量https_proxy。以前https_proxy是https://127.0.0.1:<PORT>，我https通过以下方式删除了标题：

export https_proxy=127.0.0.1:<PORT>

那我就可以做python3 -m pip install --upgrade urllib3。

Answer 6

就我而言，查尔斯的windows proxy函数导致了这个错误。关闭后windows proxy，这个错误就消失了。