晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。   林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。   见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝)   既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。   南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。 sh-3ll

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DIR:/opt/cloudlinux/venv/lib64/python3.11/site-packages/urllib3/
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Current File : //opt/cloudlinux/venv/lib64/python3.11/site-packages/urllib3/_base_connection.py
from __future__ import annotations

import typing

from .util.connection import _TYPE_SOCKET_OPTIONS
from .util.timeout import _DEFAULT_TIMEOUT, _TYPE_TIMEOUT
from .util.url import Url

_TYPE_BODY = typing.Union[bytes, typing.IO[typing.Any], typing.Iterable[bytes], str]


class ProxyConfig(typing.NamedTuple):
    ssl_context: ssl.SSLContext | None
    use_forwarding_for_https: bool
    assert_hostname: None | str | Literal[False]
    assert_fingerprint: str | None


class _ResponseOptions(typing.NamedTuple):
    # TODO: Remove this in favor of a better
    # HTTP request/response lifecycle tracking.
    request_method: str
    request_url: str
    preload_content: bool
    decode_content: bool
    enforce_content_length: bool


if typing.TYPE_CHECKING:
    import ssl

    from typing_extensions import Literal, Protocol

    from .response import BaseHTTPResponse

    class BaseHTTPConnection(Protocol):
        default_port: typing.ClassVar[int]
        default_socket_options: typing.ClassVar[_TYPE_SOCKET_OPTIONS]

        host: str
        port: int
        timeout: None | (
            float
        )  # Instance doesn't store _DEFAULT_TIMEOUT, must be resolved.
        blocksize: int
        source_address: tuple[str, int] | None
        socket_options: _TYPE_SOCKET_OPTIONS | None

        proxy: Url | None
        proxy_config: ProxyConfig | None

        is_verified: bool
        proxy_is_verified: bool | None

        def __init__(
            self,
            host: str,
            port: int | None = None,
            *,
            timeout: _TYPE_TIMEOUT = _DEFAULT_TIMEOUT,
            source_address: tuple[str, int] | None = None,
            blocksize: int = 8192,
            socket_options: _TYPE_SOCKET_OPTIONS | None = ...,
            proxy: Url | None = None,
            proxy_config: ProxyConfig | None = None,
        ) -> None:
            ...

        def set_tunnel(
            self,
            host: str,
            port: int | None = None,
            headers: typing.Mapping[str, str] | None = None,
            scheme: str = "http",
        ) -> None:
            ...

        def connect(self) -> None:
            ...

        def request(
            self,
            method: str,
            url: str,
            body: _TYPE_BODY | None = None,
            headers: typing.Mapping[str, str] | None = None,
            # We know *at least* botocore is depending on the order of the
            # first 3 parameters so to be safe we only mark the later ones
            # as keyword-only to ensure we have space to extend.
            *,
            chunked: bool = False,
            preload_content: bool = True,
            decode_content: bool = True,
            enforce_content_length: bool = True,
        ) -> None:
            ...

        def getresponse(self) -> BaseHTTPResponse:
            ...

        def close(self) -> None:
            ...

        @property
        def is_closed(self) -> bool:
            """Whether the connection either is brand new or has been previously closed.
            If this property is True then both ``is_connected`` and ``has_connected_to_proxy``
            properties must be False.
            """

        @property
        def is_connected(self) -> bool:
            """Whether the connection is actively connected to any origin (proxy or target)"""

        @property
        def has_connected_to_proxy(self) -> bool:
            """Whether the connection has successfully connected to its proxy.
            This returns False if no proxy is in use. Used to determine whether
            errors are coming from the proxy layer or from tunnelling to the target origin.
            """

    class BaseHTTPSConnection(BaseHTTPConnection, Protocol):
        default_port: typing.ClassVar[int]
        default_socket_options: typing.ClassVar[_TYPE_SOCKET_OPTIONS]

        # Certificate verification methods
        cert_reqs: int | str | None
        assert_hostname: None | str | Literal[False]
        assert_fingerprint: str | None
        ssl_context: ssl.SSLContext | None

        # Trusted CAs
        ca_certs: str | None
        ca_cert_dir: str | None
        ca_cert_data: None | str | bytes

        # TLS version
        ssl_minimum_version: int | None
        ssl_maximum_version: int | None
        ssl_version: int | str | None  # Deprecated

        # Client certificates
        cert_file: str | None
        key_file: str | None
        key_password: str | None

        def __init__(
            self,
            host: str,
            port: int | None = None,
            *,
            timeout: _TYPE_TIMEOUT = _DEFAULT_TIMEOUT,
            source_address: tuple[str, int] | None = None,
            blocksize: int = 8192,
            socket_options: _TYPE_SOCKET_OPTIONS | None = ...,
            proxy: Url | None = None,
            proxy_config: ProxyConfig | None = None,
            cert_reqs: int | str | None = None,
            assert_hostname: None | str | Literal[False] = None,
            assert_fingerprint: str | None = None,
            server_hostname: str | None = None,
            ssl_context: ssl.SSLContext | None = None,
            ca_certs: str | None = None,
            ca_cert_dir: str | None = None,
            ca_cert_data: None | str | bytes = None,
            ssl_minimum_version: int | None = None,
            ssl_maximum_version: int | None = None,
            ssl_version: int | str | None = None,  # Deprecated
            cert_file: str | None = None,
            key_file: str | None = None,
            key_password: str | None = None,
        ) -> None:
            ...