--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/urllib3/exceptions.py	Sun May 05 23:32:17 2024 -0400
@@ -0,0 +1,321 @@
+from __future__ import annotations
+
+import socket
+import typing
+import warnings
+from email.errors import MessageDefect
+from http.client import IncompleteRead as httplib_IncompleteRead
+
+if typing.TYPE_CHECKING:
+    from .connection import HTTPConnection
+    from .connectionpool import ConnectionPool
+    from .response import HTTPResponse
+    from .util.retry import Retry
+
+# Base Exceptions
+
+
+class HTTPError(Exception):
+    """Base exception used by this module."""
+
+
+class HTTPWarning(Warning):
+    """Base warning used by this module."""
+
+
+_TYPE_REDUCE_RESULT = typing.Tuple[
+    typing.Callable[..., object], typing.Tuple[object, ...]
+]
+
+
+class PoolError(HTTPError):
+    """Base exception for errors caused within a pool."""
+
+    def __init__(self, pool: ConnectionPool, message: str) -> None:
+        self.pool = pool
+        super().__init__(f"{pool}: {message}")
+
+    def __reduce__(self) -> _TYPE_REDUCE_RESULT:
+        # For pickling purposes.
+        return self.__class__, (None, None)
+
+
+class RequestError(PoolError):
+    """Base exception for PoolErrors that have associated URLs."""
+
+    def __init__(self, pool: ConnectionPool, url: str, message: str) -> None:
+        self.url = url
+        super().__init__(pool, message)
+
+    def __reduce__(self) -> _TYPE_REDUCE_RESULT:
+        # For pickling purposes.
+        return self.__class__, (None, self.url, None)
+
+
+class SSLError(HTTPError):
+    """Raised when SSL certificate fails in an HTTPS connection."""
+
+
+class ProxyError(HTTPError):
+    """Raised when the connection to a proxy fails."""
+
+    # The original error is also available as __cause__.
+    original_error: Exception
+
+    def __init__(self, message: str, error: Exception) -> None:
+        super().__init__(message, error)
+        self.original_error = error
+
+
+class DecodeError(HTTPError):
+    """Raised when automatic decoding based on Content-Type fails."""
+
+
+class ProtocolError(HTTPError):
+    """Raised when something unexpected happens mid-request/response."""
+
+
+#: Renamed to ProtocolError but aliased for backwards compatibility.
+ConnectionError = ProtocolError
+
+
+# Leaf Exceptions
+
+
+class MaxRetryError(RequestError):
+    """Raised when the maximum number of retries is exceeded.
+
+    :param pool: The connection pool
+    :type pool: :class:`~urllib3.connectionpool.HTTPConnectionPool`
+    :param str url: The requested Url
+    :param reason: The underlying error
+    :type reason: :class:`Exception`
+
+    """
+
+    def __init__(
+        self, pool: ConnectionPool, url: str, reason: Exception | None = None
+    ) -> None:
+        self.reason = reason
+
+        message = f"Max retries exceeded with url: {url} (Caused by {reason!r})"
+
+        super().__init__(pool, url, message)
+
+
+class HostChangedError(RequestError):
+    """Raised when an existing pool gets a request for a foreign host."""
+
+    def __init__(
+        self, pool: ConnectionPool, url: str, retries: Retry | int = 3
+    ) -> None:
+        message = f"Tried to open a foreign host with url: {url}"
+        super().__init__(pool, url, message)
+        self.retries = retries
+
+
+class TimeoutStateError(HTTPError):
+    """Raised when passing an invalid state to a timeout"""
+
+
+class TimeoutError(HTTPError):
+    """Raised when a socket timeout error occurs.
+
+    Catching this error will catch both :exc:`ReadTimeoutErrors
+    <ReadTimeoutError>` and :exc:`ConnectTimeoutErrors <ConnectTimeoutError>`.
+    """
+
+
+class ReadTimeoutError(TimeoutError, RequestError):
+    """Raised when a socket timeout occurs while receiving data from a server"""
+
+
+# This timeout error does not have a URL attached and needs to inherit from the
+# base HTTPError
+class ConnectTimeoutError(TimeoutError):
+    """Raised when a socket timeout occurs while connecting to a server"""
+
+
+class NewConnectionError(ConnectTimeoutError, HTTPError):
+    """Raised when we fail to establish a new connection. Usually ECONNREFUSED."""
+
+    def __init__(self, conn: HTTPConnection, message: str) -> None:
+        self.conn = conn
+        super().__init__(f"{conn}: {message}")
+
+    @property
+    def pool(self) -> HTTPConnection:
+        warnings.warn(
+            "The 'pool' property is deprecated and will be removed "
+            "in urllib3 v2.1.0. Use 'conn' instead.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+
+        return self.conn
+
+
+class NameResolutionError(NewConnectionError):
+    """Raised when host name resolution fails."""
+
+    def __init__(self, host: str, conn: HTTPConnection, reason: socket.gaierror):
+        message = f"Failed to resolve '{host}' ({reason})"
+        super().__init__(conn, message)
+
+
+class EmptyPoolError(PoolError):
+    """Raised when a pool runs out of connections and no more are allowed."""
+
+
+class FullPoolError(PoolError):
+    """Raised when we try to add a connection to a full pool in blocking mode."""
+
+
+class ClosedPoolError(PoolError):
+    """Raised when a request enters a pool after the pool has been closed."""
+
+
+class LocationValueError(ValueError, HTTPError):
+    """Raised when there is something wrong with a given URL input."""
+
+
+class LocationParseError(LocationValueError):
+    """Raised when get_host or similar fails to parse the URL input."""
+
+    def __init__(self, location: str) -> None:
+        message = f"Failed to parse: {location}"
+        super().__init__(message)
+
+        self.location = location
+
+
+class URLSchemeUnknown(LocationValueError):
+    """Raised when a URL input has an unsupported scheme."""
+
+    def __init__(self, scheme: str):
+        message = f"Not supported URL scheme {scheme}"
+        super().__init__(message)
+
+        self.scheme = scheme
+
+
+class ResponseError(HTTPError):
+    """Used as a container for an error reason supplied in a MaxRetryError."""
+
+    GENERIC_ERROR = "too many error responses"
+    SPECIFIC_ERROR = "too many {status_code} error responses"
+
+
+class SecurityWarning(HTTPWarning):
+    """Warned when performing security reducing actions"""
+
+
+class InsecureRequestWarning(SecurityWarning):
+    """Warned when making an unverified HTTPS request."""
+
+
+class NotOpenSSLWarning(SecurityWarning):
+    """Warned when using unsupported SSL library"""
+
+
+class SystemTimeWarning(SecurityWarning):
+    """Warned when system time is suspected to be wrong"""
+
+
+class InsecurePlatformWarning(SecurityWarning):
+    """Warned when certain TLS/SSL configuration is not available on a platform."""
+
+
+class DependencyWarning(HTTPWarning):
+    """
+    Warned when an attempt is made to import a module with missing optional
+    dependencies.
+    """
+
+
+class ResponseNotChunked(ProtocolError, ValueError):
+    """Response needs to be chunked in order to read it as chunks."""
+
+
+class BodyNotHttplibCompatible(HTTPError):
+    """
+    Body should be :class:`http.client.HTTPResponse` like
+    (have an fp attribute which returns raw chunks) for read_chunked().
+    """
+
+
+class IncompleteRead(HTTPError, httplib_IncompleteRead):
+    """
+    Response length doesn't match expected Content-Length
+
+    Subclass of :class:`http.client.IncompleteRead` to allow int value
+    for ``partial`` to avoid creating large objects on streamed reads.
+    """
+
+    partial: int  # type: ignore[assignment]
+    expected: int
+
+    def __init__(self, partial: int, expected: int) -> None:
+        self.partial = partial
+        self.expected = expected
+
+    def __repr__(self) -> str:
+        return "IncompleteRead(%i bytes read, %i more expected)" % (
+            self.partial,
+            self.expected,
+        )
+
+
+class InvalidChunkLength(HTTPError, httplib_IncompleteRead):
+    """Invalid chunk length in a chunked response."""
+
+    def __init__(self, response: HTTPResponse, length: bytes) -> None:
+        self.partial: int = response.tell()  # type: ignore[assignment]
+        self.expected: int | None = response.length_remaining
+        self.response = response
+        self.length = length
+
+    def __repr__(self) -> str:
+        return "InvalidChunkLength(got length %r, %i bytes read)" % (
+            self.length,
+            self.partial,
+        )
+
+
+class InvalidHeader(HTTPError):
+    """The header provided was somehow invalid."""
+
+
+class ProxySchemeUnknown(AssertionError, URLSchemeUnknown):
+    """ProxyManager does not support the supplied scheme"""
+
+    # TODO(t-8ch): Stop inheriting from AssertionError in v2.0.
+
+    def __init__(self, scheme: str | None) -> None:
+        # 'localhost' is here because our URL parser parses
+        # localhost:8080 -> scheme=localhost, remove if we fix this.
+        if scheme == "localhost":
+            scheme = None
+        if scheme is None:
+            message = "Proxy URL had no scheme, should start with http:// or https://"
+        else:
+            message = f"Proxy URL had unsupported scheme {scheme}, should use http:// or https://"
+        super().__init__(message)
+
+
+class ProxySchemeUnsupported(ValueError):
+    """Fetching HTTPS resources through HTTPS proxies is unsupported"""
+
+
+class HeaderParsingError(HTTPError):
+    """Raised by assert_header_parsing, but we convert it to a log.warning statement."""
+
+    def __init__(
+        self, defects: list[MessageDefect], unparsed_data: bytes | str | None
+    ) -> None:
+        message = f"{defects or 'Unknown'}, unparsed data: {unparsed_data!r}"
+        super().__init__(message)
+
+
+class UnrewindableBodyError(HTTPError):
+    """urllib3 encountered an error when trying to rewind a body"""