python - 验证 Scrapy HTTP 代理

Question

我可以使用 request.meta['proxy'] 设置一个 http 代理，但我如何验证代理？

这对指定用户和密码不起作用:

request.meta['proxy'] = 'http://user:pass@123.456.2323:2222'

环顾四周，我可能必须发送 request.headers['Proxy-Authorization']，但我应该以什么格式发送它？

Answer 1

用户名和密码以“用户名:密码”的形式进行base64编码

import base64

# Set the location of the proxy
proxy_string = choice(self._get_proxies_from_file('proxies.txt')) # user:pass@ip:port
proxy_items = proxy_string.split('@')
request.meta['proxy'] = "http://%s" % proxy_items[1]

# setup basic authentication for the proxy
user_pass=base64.encodestring(proxy_items[0])
request.headers['Proxy-Authorization'] = 'Basic ' + user_pass