126 lines
3.3 KiB
Python
126 lines
3.3 KiB
Python
# urllib3/exceptions.py
|
|
# Copyright 2008-2013 Andrey Petrov and contributors (see CONTRIBUTORS.txt)
|
|
#
|
|
# This module is part of urllib3 and is released under
|
|
# the MIT License: http://www.opensource.org/licenses/mit-license.php
|
|
|
|
|
|
## Base Exceptions
|
|
|
|
class HTTPError(Exception):
|
|
"Base exception 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 ConnectionError(HTTPError):
|
|
"Raised when a normal connection fails."
|
|
pass
|
|
|
|
|
|
class DecodeError(HTTPError):
|
|
"Raised when automatic decoding based on Content-Type fails."
|
|
pass
|
|
|
|
|
|
## Leaf Exceptions
|
|
|
|
class MaxRetryError(RequestError):
|
|
"Raised when the maximum number of retries is exceeded."
|
|
|
|
def __init__(self, pool, url, reason=None):
|
|
self.reason = reason
|
|
|
|
message = "Max retries exceeded with url: %s" % url
|
|
if reason:
|
|
message += " (Caused by %s: %s)" % (type(reason), reason)
|
|
else:
|
|
message += " (Caused by redirect)"
|
|
|
|
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 LocationParseError(ValueError, HTTPError):
|
|
"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
|