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421
myenv/Lib/site-packages/aiohttp/client_exceptions.py
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421
myenv/Lib/site-packages/aiohttp/client_exceptions.py
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"""HTTP related errors."""
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import asyncio
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import warnings
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from typing import TYPE_CHECKING, Optional, Tuple, Union
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from multidict import MultiMapping
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from .typedefs import StrOrURL
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if TYPE_CHECKING:
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import ssl
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SSLContext = ssl.SSLContext
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else:
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try:
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import ssl
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SSLContext = ssl.SSLContext
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except ImportError: # pragma: no cover
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ssl = SSLContext = None # type: ignore[assignment]
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if TYPE_CHECKING:
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from .client_reqrep import ClientResponse, ConnectionKey, Fingerprint, RequestInfo
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from .http_parser import RawResponseMessage
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else:
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RequestInfo = ClientResponse = ConnectionKey = RawResponseMessage = None
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__all__ = (
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"ClientError",
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"ClientConnectionError",
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"ClientConnectionResetError",
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"ClientOSError",
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"ClientConnectorError",
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"ClientProxyConnectionError",
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"ClientSSLError",
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"ClientConnectorDNSError",
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"ClientConnectorSSLError",
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"ClientConnectorCertificateError",
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"ConnectionTimeoutError",
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"SocketTimeoutError",
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"ServerConnectionError",
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"ServerTimeoutError",
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"ServerDisconnectedError",
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"ServerFingerprintMismatch",
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"ClientResponseError",
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"ClientHttpProxyError",
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"WSServerHandshakeError",
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"ContentTypeError",
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"ClientPayloadError",
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"InvalidURL",
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"InvalidUrlClientError",
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"RedirectClientError",
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"NonHttpUrlClientError",
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"InvalidUrlRedirectClientError",
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"NonHttpUrlRedirectClientError",
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"WSMessageTypeError",
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)
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class ClientError(Exception):
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"""Base class for client connection errors."""
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class ClientResponseError(ClientError):
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"""Base class for exceptions that occur after getting a response.
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request_info: An instance of RequestInfo.
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history: A sequence of responses, if redirects occurred.
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status: HTTP status code.
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message: Error message.
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headers: Response headers.
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"""
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def __init__(
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self,
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request_info: RequestInfo,
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history: Tuple[ClientResponse, ...],
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*,
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code: Optional[int] = None,
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status: Optional[int] = None,
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message: str = "",
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headers: Optional[MultiMapping[str]] = None,
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) -> None:
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self.request_info = request_info
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if code is not None:
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if status is not None:
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raise ValueError(
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"Both code and status arguments are provided; "
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"code is deprecated, use status instead"
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)
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warnings.warn(
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"code argument is deprecated, use status instead",
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DeprecationWarning,
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stacklevel=2,
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)
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if status is not None:
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self.status = status
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elif code is not None:
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self.status = code
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else:
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self.status = 0
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self.message = message
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self.headers = headers
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self.history = history
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self.args = (request_info, history)
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def __str__(self) -> str:
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return "{}, message={!r}, url={!r}".format(
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self.status,
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self.message,
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str(self.request_info.real_url),
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)
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def __repr__(self) -> str:
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args = f"{self.request_info!r}, {self.history!r}"
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if self.status != 0:
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args += f", status={self.status!r}"
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if self.message != "":
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args += f", message={self.message!r}"
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if self.headers is not None:
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args += f", headers={self.headers!r}"
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return f"{type(self).__name__}({args})"
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@property
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def code(self) -> int:
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warnings.warn(
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"code property is deprecated, use status instead",
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DeprecationWarning,
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stacklevel=2,
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)
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return self.status
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@code.setter
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def code(self, value: int) -> None:
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warnings.warn(
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"code property is deprecated, use status instead",
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DeprecationWarning,
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stacklevel=2,
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)
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self.status = value
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class ContentTypeError(ClientResponseError):
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"""ContentType found is not valid."""
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class WSServerHandshakeError(ClientResponseError):
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"""websocket server handshake error."""
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class ClientHttpProxyError(ClientResponseError):
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"""HTTP proxy error.
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Raised in :class:`aiohttp.connector.TCPConnector` if
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proxy responds with status other than ``200 OK``
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on ``CONNECT`` request.
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"""
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class TooManyRedirects(ClientResponseError):
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"""Client was redirected too many times."""
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class ClientConnectionError(ClientError):
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"""Base class for client socket errors."""
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class ClientConnectionResetError(ClientConnectionError, ConnectionResetError):
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"""ConnectionResetError"""
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class ClientOSError(ClientConnectionError, OSError):
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"""OSError error."""
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class ClientConnectorError(ClientOSError):
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"""Client connector error.
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Raised in :class:`aiohttp.connector.TCPConnector` if
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a connection can not be established.
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"""
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def __init__(self, connection_key: ConnectionKey, os_error: OSError) -> None:
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self._conn_key = connection_key
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self._os_error = os_error
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super().__init__(os_error.errno, os_error.strerror)
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self.args = (connection_key, os_error)
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@property
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def os_error(self) -> OSError:
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return self._os_error
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@property
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def host(self) -> str:
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return self._conn_key.host
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@property
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def port(self) -> Optional[int]:
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return self._conn_key.port
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@property
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def ssl(self) -> Union[SSLContext, bool, "Fingerprint"]:
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return self._conn_key.ssl
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def __str__(self) -> str:
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return "Cannot connect to host {0.host}:{0.port} ssl:{1} [{2}]".format(
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self, "default" if self.ssl is True else self.ssl, self.strerror
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)
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# OSError.__reduce__ does too much black magick
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__reduce__ = BaseException.__reduce__
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class ClientConnectorDNSError(ClientConnectorError):
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"""DNS resolution failed during client connection.
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Raised in :class:`aiohttp.connector.TCPConnector` if
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DNS resolution fails.
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"""
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class ClientProxyConnectionError(ClientConnectorError):
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"""Proxy connection error.
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Raised in :class:`aiohttp.connector.TCPConnector` if
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connection to proxy can not be established.
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"""
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class UnixClientConnectorError(ClientConnectorError):
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"""Unix connector error.
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Raised in :py:class:`aiohttp.connector.UnixConnector`
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if connection to unix socket can not be established.
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"""
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def __init__(
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self, path: str, connection_key: ConnectionKey, os_error: OSError
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) -> None:
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self._path = path
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super().__init__(connection_key, os_error)
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@property
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def path(self) -> str:
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return self._path
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def __str__(self) -> str:
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return "Cannot connect to unix socket {0.path} ssl:{1} [{2}]".format(
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self, "default" if self.ssl is True else self.ssl, self.strerror
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)
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class ServerConnectionError(ClientConnectionError):
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"""Server connection errors."""
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class ServerDisconnectedError(ServerConnectionError):
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"""Server disconnected."""
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def __init__(self, message: Union[RawResponseMessage, str, None] = None) -> None:
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if message is None:
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message = "Server disconnected"
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self.args = (message,)
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self.message = message
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class ServerTimeoutError(ServerConnectionError, asyncio.TimeoutError):
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"""Server timeout error."""
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class ConnectionTimeoutError(ServerTimeoutError):
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"""Connection timeout error."""
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class SocketTimeoutError(ServerTimeoutError):
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"""Socket timeout error."""
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class ServerFingerprintMismatch(ServerConnectionError):
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"""SSL certificate does not match expected fingerprint."""
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def __init__(self, expected: bytes, got: bytes, host: str, port: int) -> None:
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self.expected = expected
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self.got = got
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self.host = host
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self.port = port
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self.args = (expected, got, host, port)
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def __repr__(self) -> str:
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return "<{} expected={!r} got={!r} host={!r} port={!r}>".format(
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self.__class__.__name__, self.expected, self.got, self.host, self.port
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)
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class ClientPayloadError(ClientError):
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"""Response payload error."""
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class InvalidURL(ClientError, ValueError):
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"""Invalid URL.
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URL used for fetching is malformed, e.g. it doesn't contains host
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part.
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"""
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# Derive from ValueError for backward compatibility
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def __init__(self, url: StrOrURL, description: Union[str, None] = None) -> None:
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# The type of url is not yarl.URL because the exception can be raised
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# on URL(url) call
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self._url = url
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self._description = description
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if description:
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super().__init__(url, description)
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else:
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super().__init__(url)
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@property
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def url(self) -> StrOrURL:
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return self._url
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@property
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def description(self) -> "str | None":
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return self._description
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def __repr__(self) -> str:
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return f"<{self.__class__.__name__} {self}>"
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def __str__(self) -> str:
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if self._description:
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return f"{self._url} - {self._description}"
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return str(self._url)
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class InvalidUrlClientError(InvalidURL):
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"""Invalid URL client error."""
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class RedirectClientError(ClientError):
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"""Client redirect error."""
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class NonHttpUrlClientError(ClientError):
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"""Non http URL client error."""
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class InvalidUrlRedirectClientError(InvalidUrlClientError, RedirectClientError):
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"""Invalid URL redirect client error."""
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class NonHttpUrlRedirectClientError(NonHttpUrlClientError, RedirectClientError):
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"""Non http URL redirect client error."""
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class ClientSSLError(ClientConnectorError):
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"""Base error for ssl.*Errors."""
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if ssl is not None:
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cert_errors = (ssl.CertificateError,)
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cert_errors_bases = (
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ClientSSLError,
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ssl.CertificateError,
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)
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ssl_errors = (ssl.SSLError,)
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ssl_error_bases = (ClientSSLError, ssl.SSLError)
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else: # pragma: no cover
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cert_errors = tuple()
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cert_errors_bases = (
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ClientSSLError,
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ValueError,
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)
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ssl_errors = tuple()
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ssl_error_bases = (ClientSSLError,)
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class ClientConnectorSSLError(*ssl_error_bases): # type: ignore[misc]
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"""Response ssl error."""
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class ClientConnectorCertificateError(*cert_errors_bases): # type: ignore[misc]
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"""Response certificate error."""
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def __init__(
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self, connection_key: ConnectionKey, certificate_error: Exception
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) -> None:
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self._conn_key = connection_key
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self._certificate_error = certificate_error
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self.args = (connection_key, certificate_error)
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@property
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def certificate_error(self) -> Exception:
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return self._certificate_error
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@property
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def host(self) -> str:
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return self._conn_key.host
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@property
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def port(self) -> Optional[int]:
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return self._conn_key.port
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@property
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def ssl(self) -> bool:
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return self._conn_key.is_ssl
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def __str__(self) -> str:
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return (
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"Cannot connect to host {0.host}:{0.port} ssl:{0.ssl} "
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"[{0.certificate_error.__class__.__name__}: "
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"{0.certificate_error.args}]".format(self)
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)
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class WSMessageTypeError(TypeError):
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"""WebSocket message type is not valid."""
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