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- ## 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."
- pass
- 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 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 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 perfoming security reducing actions"
- 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 SSL configuration is not available on a platform."
- pass
- class ResponseNotChunked(ProtocolError, ValueError):
- "Response needs to be chunked in order to read it as chunks."
- pass
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