1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
# 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
|