127 lines
3.3 KiB
Python
127 lines
3.3 KiB
Python
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# urllib3/exceptions.py
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# Copyright 2008-2013 Andrey Petrov and contributors (see CONTRIBUTORS.txt)
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#
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# This module is part of urllib3 and is released under
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# the MIT License: http://www.opensource.org/licenses/mit-license.php
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## Base Exceptions
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class HTTPError(Exception):
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"Base exception used by this module."
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pass
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class PoolError(HTTPError):
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"Base exception for errors caused within a pool."
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def __init__(self, pool, message):
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self.pool = pool
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HTTPError.__init__(self, "%s: %s" % (pool, message))
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def __reduce__(self):
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# For pickling purposes.
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return self.__class__, (None, None)
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class RequestError(PoolError):
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"Base exception for PoolErrors that have associated URLs."
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def __init__(self, pool, url, message):
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self.url = url
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PoolError.__init__(self, pool, message)
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def __reduce__(self):
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# For pickling purposes.
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return self.__class__, (None, self.url, None)
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class SSLError(HTTPError):
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"Raised when SSL certificate fails in an HTTPS connection."
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pass
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class ProxyError(HTTPError):
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"Raised when the connection to a proxy fails."
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pass
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class ConnectionError(HTTPError):
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"Raised when a normal connection fails."
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pass
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class DecodeError(HTTPError):
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"Raised when automatic decoding based on Content-Type fails."
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pass
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## Leaf Exceptions
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class MaxRetryError(RequestError):
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"Raised when the maximum number of retries is exceeded."
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def __init__(self, pool, url, reason=None):
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self.reason = reason
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message = "Max retries exceeded with url: %s" % url
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if reason:
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message += " (Caused by %s: %s)" % (type(reason), reason)
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else:
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message += " (Caused by redirect)"
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RequestError.__init__(self, pool, url, message)
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class HostChangedError(RequestError):
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"Raised when an existing pool gets a request for a foreign host."
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def __init__(self, pool, url, retries=3):
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message = "Tried to open a foreign host with url: %s" % url
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RequestError.__init__(self, pool, url, message)
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self.retries = retries
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class TimeoutStateError(HTTPError):
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""" Raised when passing an invalid state to a timeout """
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pass
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class TimeoutError(HTTPError):
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""" Raised when a socket timeout error occurs.
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Catching this error will catch both :exc:`ReadTimeoutErrors
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<ReadTimeoutError>` and :exc:`ConnectTimeoutErrors <ConnectTimeoutError>`.
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"""
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pass
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class ReadTimeoutError(TimeoutError, RequestError):
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"Raised when a socket timeout occurs while receiving data from a server"
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pass
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# This timeout error does not have a URL attached and needs to inherit from the
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# base HTTPError
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class ConnectTimeoutError(TimeoutError):
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"Raised when a socket timeout occurs while connecting to a server"
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pass
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class EmptyPoolError(PoolError):
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"Raised when a pool runs out of connections and no more are allowed."
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pass
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class ClosedPoolError(PoolError):
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"Raised when a request enters a pool after the pool has been closed."
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pass
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class LocationParseError(ValueError, HTTPError):
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"Raised when get_host or similar fails to parse the URL input."
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def __init__(self, location):
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message = "Failed to parse: %s" % location
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HTTPError.__init__(self, message)
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self.location = location
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