如何通过使用 python requests 模块传递代理身份验证(需要摘要身份验证) [英] How to pass proxy-authentication (requires digest auth) by using python requests module
问题描述
我之前在使用 Mechanize 模块,现在尝试使用 Requests 模块.
(当需要 HTTPS 和代理身份验证时,Python 机械化不起作用)
I was using Mechanize module a while ago, and now try to use Requests module.
(Python mechanize doesn't work when HTTPS and Proxy Authentication required)
当我访问互联网时,我必须通过代理服务器.
代理服务器需要身份验证.我写了以下代码.
I have to go through proxy-server when I access the Internet.
The proxy-server requires authentication. I wrote the following codes.
import requests
from requests.auth import HTTPProxyAuth
proxies = {"http":"192.168.20.130:8080"}
auth = HTTPProxyAuth("username", "password")
r = requests.get("http://www.google.co.jp/", proxies=proxies, auth=auth)
当代理服务器需要基本身份验证时,上述代码运行良好.
现在我想知道当代理服务器需要摘要身份验证时我必须做什么.
HTTPProxyAuth 似乎在摘要认证中无效(r.status_code 返回 407).
The above codes work well when proxy-server requires basic authentication.
Now I want to know what I have to do when proxy-server requires digest authentication.
HTTPProxyAuth seems not to be effective in digest authentication (r.status_code returns 407).
推荐答案
我编写了可以用于代理身份验证的类(基于摘要身份验证).
我从 requests.auth.HTTPDigestAuth 借用了几乎所有代码.
I wrote the class that can be used in proxy authentication (based on digest auth).
I borrowed almost all codes from requests.auth.HTTPDigestAuth.
import requests
import requests.auth
class HTTPProxyDigestAuth(requests.auth.HTTPDigestAuth):
def handle_407(self, r):
"""Takes the given response and tries digest-auth, if needed."""
num_407_calls = r.request.hooks['response'].count(self.handle_407)
s_auth = r.headers.get('Proxy-authenticate', '')
if 'digest' in s_auth.lower() and num_407_calls < 2:
self.chal = requests.auth.parse_dict_header(s_auth.replace('Digest ', ''))
# Consume content and release the original connection
# to allow our new request to reuse the same one.
r.content
r.raw.release_conn()
r.request.headers['Authorization'] = self.build_digest_header(r.request.method, r.request.url)
r.request.send(anyway=True)
_r = r.request.response
_r.history.append(r)
return _r
return r
def __call__(self, r):
if self.last_nonce:
r.headers['Proxy-Authorization'] = self.build_digest_header(r.method, r.url)
r.register_hook('response', self.handle_407)
return r
用法:
proxies = {
"http" :"192.168.20.130:8080",
"https":"192.168.20.130:8080",
}
auth = HTTPProxyDigestAuth("username", "password")
# HTTP
r = requests.get("http://www.google.co.jp/", proxies=proxies, auth=auth)
r.status_code # 200 OK
# HTTPS
r = requests.get("https://www.google.co.jp/", proxies=proxies, auth=auth)
r.status_code # 200 OK
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