http代理协议入站和pip不兼容？[Bug]

[bash99]

Describe the bug【描述 bug】
服务器上启动verysimple客户端，入站
···
[[listen]]
protocol = "http"
host = "127.0.0.1"
port = 10268
···

pip3用此代理安装会报错
To Reproduce【如何复现该bug】
执行

 pip3 --proxy http://localhost:10268 search numpy

响应

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', RemoteDisconnected('Remote end closed connection without response'))': /pypi

verysimple这边log的错误

2023-04-12 15:02:09.320 INFO    New Accepted Conn       {"connid": 885235, "from": "127.0.0.1:59548", "handler": "http://127.0.0.1:10268"}
2023-04-12 15:02:09.321 WARN    Failed handshakeInserver        {"connid": 885235, "handler": "127.0.0.1:10268", "client RemoteAddr": "127.0.0.1:59548", "error": " [ get method/path failed , Detail: invalid data, Data: [CONNECT -12] ] , with Buffer,len 33"}

Expected behavior【预期的行为】
pip3能正常访问。
BTW, curl、conda都能正常，所以只是某种不兼容。但是换naive这种简单代理pip3能兼容。

Envs (please complete the following information):【系统环境】
1.2.5版本

[Aruelius]

可以把 http 改成 socks5http

[bash99]

可以把 http 改成 socks5http

这样倒是pip3用sock5访问能过，不过http入站可能还是算有点兼容性问题。