Question

我试图从Internet和Python2.7.15cr1下载PDF文件并请求2.19.1，但我遇到此错误：

>     Traceback (most recent call last):
>       File "download.py", line 5, in <module>
>         r = requests.get(url,verify=False)
>       File "/home/user/.local/lib/python2.7/site-packages/requests/api.py",
> line 72, in get
>         return request('get', url, params=params, **kwargs)
>       File "/home/user/.local/lib/python2.7/site-packages/requests/api.py",
> line 58, in request
>         return session.request(method=method, url=url, **kwargs)
>       File "/home/user/.local/lib/python2.7/site-packages/requests/sessions.py",
> line 512, in request
>         resp = self.send(prep, **send_kwargs)
>       File "/home/user/.local/lib/python2.7/site-packages/requests/sessions.py",
> line 622, in send
>         r = adapter.send(request, **kwargs)
>       File "/home/user/.local/lib/python2.7/site-packages/requests/adapters.py",
> line 511, in send
>         raise SSLError(e, request=request)
>     requests.exceptions.SSLError: HTTPSConnectionPool(host='host', port=443): Max
> retries exceeded with url: /en/files/pdftodownload.pdf
> (Caused by SSLError(SSLError("bad handshake: Error([('SSL routines',
> 'ssl3_read_bytes', 'sslv3 alert handshake failure')],)",),))

我用来尝试下载PDF文件的代码是：

import requests

url = 'https://www.gasnaturalfenosa.com/en/files/GasNaturalSDG_ing_2016-2.pdf'
r = requests.get(url, stream=True)

with open('metadata.pdf', 'wb') as fd:
    for chunk in r.iter_content(chunk_size=2048):
        fd.write(chunk)

如果我尝试使用curl下载它，则会遇到相同的错误。我一直在尝试纠正此错误已有好几天，因此，如果有人可以给我提示为什么会发生这种情况，我将不胜感激！

提前谢谢！

Answer 1

该服务器已损坏。根据{{3}}，它仅支持TLS 1.0，并且仅支持使用DES或3DES的不安全或弱密码。默认情况下，在请求中禁用这些密码。

如果仍然要连接到服务器，则需要明确允许弱3DES密码。如SSLLabs report中所述，它的工作方式如下：

import requests 
requests.packages.urllib3.util.ssl_.DEFAULT_CIPHERS = 'DES-CBC3-SHA' 
resp=requests.get('https://www.gasnaturalfenosa.com/en/files/GasNaturalSDG_ing_2016-2.pdf')

使用请求时握手不正确

1 个答案: