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connection.py	18.31 MB	View DL Edit
connectionpool.py	36.55 MB	View DL Edit
exceptions.py	8.02 MB	View DL Edit
fields.py	8.38 MB	View DL Edit
filepost.py	2.38 MB	View DL Edit
poolmanager.py	19.55 MB	View DL Edit
request.py	5.84 MB	View DL Edit
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__init__.py	2.7 MB	View DL Edit

Edit file: /lib/python3.9/site-packages/urllib3/exceptions.py

from __future__ import absolute_import

from .packages.six.moves.http_client import IncompleteRead as httplib_IncompleteRead

# Base Exceptions

class HTTPError(Exception):
    """Base exception used by this module."""

pass

class HTTPWarning(Warning):
    """Base warning used by this module."""

pass

class PoolError(HTTPError):
    """Base exception for errors caused within a pool."""

def __init__(self, pool, message):
        self.pool = pool
        HTTPError.__init__(self, "%s: %s" % (pool, message))

def __reduce__(self):
        # For pickling purposes.
        return self.__class__, (None, None)

class RequestError(PoolError):
    """Base exception for PoolErrors that have associated URLs."""

def __init__(self, pool, url, message):
        self.url = url
        PoolError.__init__(self, pool, message)

def __reduce__(self):
        # For pickling purposes.
        return self.__class__, (None, self.url, None)

class SSLError(HTTPError):
    """Raised when SSL certificate fails in an HTTPS connection."""

pass

class ProxyError(HTTPError):
    """Raised when the connection to a proxy fails."""

def __init__(self, message, error, *args):
        super(ProxyError, self).__init__(message, error, *args)
        self.original_error = error

class DecodeError(HTTPError):
    """Raised when automatic decoding based on Content-Type fails."""

pass

class ProtocolError(HTTPError):
    """Raised when something unexpected happens mid-request/response."""

pass

#: 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 string url: The requested Url
    :param exceptions.Exception reason: The underlying error

"""

def __init__(self, pool, url, reason=None):
        self.reason = reason

message = "Max retries exceeded with url: %s (Caused by %r)" % (url, reason)

RequestError.__init__(self, pool, url, message)

class HostChangedError(RequestError):
    """Raised when an existing pool gets a request for a foreign host."""

def __init__(self, pool, url, retries=3):
        message = "Tried to open a foreign host with url: %s" % url
        RequestError.__init__(self, pool, url, message)
        self.retries = retries

class TimeoutStateError(HTTPError):
    """Raised when passing an invalid state to a timeout"""

pass

class TimeoutError(HTTPError):
    """Raised when a socket timeout error occurs.

Catching this error will catch both :exc:`ReadTimeoutErrors
    <ReadTimeoutError>` and :exc:`ConnectTimeoutErrors <ConnectTimeoutError>`.
    """

pass

class ReadTimeoutError(TimeoutError, RequestError):
    """Raised when a socket timeout occurs while receiving data from a server"""

pass

# 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"""

pass

class NewConnectionError(ConnectTimeoutError, PoolError):
    """Raised when we fail to establish a new connection. Usually ECONNREFUSED."""

pass

class EmptyPoolError(PoolError):
    """Raised when a pool runs out of connections and no more are allowed."""

pass

class ClosedPoolError(PoolError):
    """Raised when a request enters a pool after the pool has been closed."""

pass

class LocationValueError(ValueError, HTTPError):
    """Raised when there is something wrong with a given URL input."""

pass

class LocationParseError(LocationValueError):
    """Raised when get_host or similar fails to parse the URL input."""

def __init__(self, location):
        message = "Failed to parse: %s" % location
        HTTPError.__init__(self, message)

self.location = location

class URLSchemeUnknown(LocationValueError):
    """Raised when a URL input has an unsupported scheme."""

def __init__(self, scheme):
        message = "Not supported URL scheme %s" % scheme
        super(URLSchemeUnknown, self).__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"""

pass

class SubjectAltNameWarning(SecurityWarning):
    """Warned when connecting to a host with a certificate missing a SAN."""

pass

class InsecureRequestWarning(SecurityWarning):
    """Warned when making an unverified HTTPS request."""

pass

class SystemTimeWarning(SecurityWarning):
    """Warned when system time is suspected to be wrong"""

pass

class InsecurePlatformWarning(SecurityWarning):
    """Warned when certain TLS/SSL configuration is not available on a platform."""

pass

class SNIMissingWarning(HTTPWarning):
    """Warned when making a HTTPS request without SNI available."""

pass

class DependencyWarning(HTTPWarning):
    """
    Warned when an attempt is made to import a module with missing optional
    dependencies.
    """

pass

class ResponseNotChunked(ProtocolError, ValueError):
    """Response needs to be chunked in order to read it as chunks."""

pass

class BodyNotHttplibCompatible(HTTPError):
    """
    Body should be :class:`http.client.HTTPResponse` like
    (have an fp attribute which returns raw chunks) for read_chunked().
    """

pass

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.
    """

def __init__(self, partial, expected):
        super(IncompleteRead, self).__init__(partial, expected)

def __repr__(self):
        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, length):
        super(InvalidChunkLength, self).__init__(
            response.tell(), response.length_remaining
        )
        self.response = response
        self.length = length

def __repr__(self):
        return "InvalidChunkLength(got length %r, %i bytes read)" % (
            self.length,
            self.partial,
        )

class InvalidHeader(HTTPError):
    """The header provided was somehow invalid."""

pass

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):
        # '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 = (
                "Proxy URL had unsupported scheme %s, should use http:// or https://"
                % scheme
            )
        super(ProxySchemeUnknown, self).__init__(message)

class ProxySchemeUnsupported(ValueError):
    """Fetching HTTPS resources through HTTPS proxies is unsupported"""

pass

class HeaderParsingError(HTTPError):
    """Raised by assert_header_parsing, but we convert it to a log.warning statement."""

def __init__(self, defects, unparsed_data):
        message = "%s, unparsed data: %r" % (defects or "Unknown", unparsed_data)
        super(HeaderParsingError, self).__init__(message)

class UnrewindableBodyError(HTTPError):
    """urllib3 encountered an error when trying to rewind a body"""

pass

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