python auth_error ai_generated true

aiohttp.client_exceptions.ClientHttpProxyError: 407 Proxy Authentication Required

ID: python/aiohttp-client-connector-http-error

Also available as: JSON · Markdown · 中文
80%Fix Rate
83%Confidence
0Evidence
2025-07-22First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.10 active — — —
3.11 active — — —

Root Cause

The proxy server requires authentication, but none was provided or the credentials are invalid.

generic

中文

代理服务器需要认证，但未提供认证信息或凭据无效。

Workarounds

  1. 90% success Use aiohttp.BasicAuth for proxy authentication 
    proxy_auth = aiohttp.BasicAuth('username', 'password')
async with session.get(url, proxy='http://proxy.example.com:8080', proxy_auth=proxy_auth) as resp:
  2. 85% success Set proxy credentials in the URL 
    async with session.get(url, proxy='http://user:[email protected]:8080') as resp:

Dead Ends

Common approaches that don't work:

  1. Providing empty username and password 60% fail

    Most proxies reject empty credentials, causing the same error.

  2. Using HTTP Basic Auth headers manually without proper encoding 50% fail

    Incorrect encoding or missing headers may still result in 407.