proxy.py/proxy/http/exception/proxy_auth_failed.py

# -*- coding: utf-8 -*-
"""
    proxy.py
    ~~~~~~~~
    ⚡⚡⚡ Fast, Lightweight, Pluggable, TLS interception capable proxy server focused on
    Network monitoring, controls & Application development, testing, debugging.

    :copyright: (c) 2013-present by Abhinav Singh and contributors.
    :license: BSD, see LICENSE for more details.
"""
from .base import HttpProtocolException

from ..codes import httpStatusCodes
from ..parser import HttpParser

from ...common.constants import PROXY_AGENT_HEADER_VALUE, PROXY_AGENT_HEADER_KEY
from ...common.utils import build_http_response


class ProxyAuthenticationFailed(HttpProtocolException):
    """Exception raised when Http Proxy auth is enabled and
    incoming request doesn't present necessary credentials."""

    RESPONSE_PKT = memoryview(
        build_http_response(
            httpStatusCodes.PROXY_AUTH_REQUIRED,
            reason=b'Proxy Authentication Required',
            headers={
                PROXY_AGENT_HEADER_KEY: PROXY_AGENT_HEADER_VALUE,
                b'Proxy-Authenticate': b'Basic',
                b'Connection': b'close',
            },
            body=b'Proxy Authentication Required',
        ),
    )

    def response(self, _request: HttpParser) -> memoryview:
        return self.RESPONSE_PKT