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comparison lib/python3.8/site-packages/pip/_vendor/urllib3/exceptions.py @ 0:9e54283cc701 draft

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"planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
author guerler
date Mon, 27 Jul 2020 03:47:31 -0400
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-1:000000000000 0:9e54283cc701
1 from __future__ import absolute_import
2 from .packages.six.moves.http_client import IncompleteRead as httplib_IncompleteRead
3
4 # Base Exceptions
5
6
7 class HTTPError(Exception):
8 "Base exception used by this module."
9 pass
10
11
12 class HTTPWarning(Warning):
13 "Base warning used by this module."
14 pass
15
16
17 class PoolError(HTTPError):
18 "Base exception for errors caused within a pool."
19
20 def __init__(self, pool, message):
21 self.pool = pool
22 HTTPError.__init__(self, "%s: %s" % (pool, message))
23
24 def __reduce__(self):
25 # For pickling purposes.
26 return self.__class__, (None, None)
27
28
29 class RequestError(PoolError):
30 "Base exception for PoolErrors that have associated URLs."
31
32 def __init__(self, pool, url, message):
33 self.url = url
34 PoolError.__init__(self, pool, message)
35
36 def __reduce__(self):
37 # For pickling purposes.
38 return self.__class__, (None, self.url, None)
39
40
41 class SSLError(HTTPError):
42 "Raised when SSL certificate fails in an HTTPS connection."
43 pass
44
45
46 class ProxyError(HTTPError):
47 "Raised when the connection to a proxy fails."
48 pass
49
50
51 class DecodeError(HTTPError):
52 "Raised when automatic decoding based on Content-Type fails."
53 pass
54
55
56 class ProtocolError(HTTPError):
57 "Raised when something unexpected happens mid-request/response."
58 pass
59
60
61 #: Renamed to ProtocolError but aliased for backwards compatibility.
62 ConnectionError = ProtocolError
63
64
65 # Leaf Exceptions
66
67
68 class MaxRetryError(RequestError):
69 """Raised when the maximum number of retries is exceeded.
70
71 :param pool: The connection pool
72 :type pool: :class:`~urllib3.connectionpool.HTTPConnectionPool`
73 :param string url: The requested Url
74 :param exceptions.Exception reason: The underlying error
75
76 """
77
78 def __init__(self, pool, url, reason=None):
79 self.reason = reason
80
81 message = "Max retries exceeded with url: %s (Caused by %r)" % (url, reason)
82
83 RequestError.__init__(self, pool, url, message)
84
85
86 class HostChangedError(RequestError):
87 "Raised when an existing pool gets a request for a foreign host."
88
89 def __init__(self, pool, url, retries=3):
90 message = "Tried to open a foreign host with url: %s" % url
91 RequestError.__init__(self, pool, url, message)
92 self.retries = retries
93
94
95 class TimeoutStateError(HTTPError):
96 """ Raised when passing an invalid state to a timeout """
97
98 pass
99
100
101 class TimeoutError(HTTPError):
102 """ Raised when a socket timeout error occurs.
103
104 Catching this error will catch both :exc:`ReadTimeoutErrors
105 <ReadTimeoutError>` and :exc:`ConnectTimeoutErrors <ConnectTimeoutError>`.
106 """
107
108 pass
109
110
111 class ReadTimeoutError(TimeoutError, RequestError):
112 "Raised when a socket timeout occurs while receiving data from a server"
113 pass
114
115
116 # This timeout error does not have a URL attached and needs to inherit from the
117 # base HTTPError
118 class ConnectTimeoutError(TimeoutError):
119 "Raised when a socket timeout occurs while connecting to a server"
120 pass
121
122
123 class NewConnectionError(ConnectTimeoutError, PoolError):
124 "Raised when we fail to establish a new connection. Usually ECONNREFUSED."
125 pass
126
127
128 class EmptyPoolError(PoolError):
129 "Raised when a pool runs out of connections and no more are allowed."
130 pass
131
132
133 class ClosedPoolError(PoolError):
134 "Raised when a request enters a pool after the pool has been closed."
135 pass
136
137
138 class LocationValueError(ValueError, HTTPError):
139 "Raised when there is something wrong with a given URL input."
140 pass
141
142
143 class LocationParseError(LocationValueError):
144 "Raised when get_host or similar fails to parse the URL input."
145
146 def __init__(self, location):
147 message = "Failed to parse: %s" % location
148 HTTPError.__init__(self, message)
149
150 self.location = location
151
152
153 class ResponseError(HTTPError):
154 "Used as a container for an error reason supplied in a MaxRetryError."
155 GENERIC_ERROR = "too many error responses"
156 SPECIFIC_ERROR = "too many {status_code} error responses"
157
158
159 class SecurityWarning(HTTPWarning):
160 "Warned when performing security reducing actions"
161 pass
162
163
164 class SubjectAltNameWarning(SecurityWarning):
165 "Warned when connecting to a host with a certificate missing a SAN."
166 pass
167
168
169 class InsecureRequestWarning(SecurityWarning):
170 "Warned when making an unverified HTTPS request."
171 pass
172
173
174 class SystemTimeWarning(SecurityWarning):
175 "Warned when system time is suspected to be wrong"
176 pass
177
178
179 class InsecurePlatformWarning(SecurityWarning):
180 "Warned when certain SSL configuration is not available on a platform."
181 pass
182
183
184 class SNIMissingWarning(HTTPWarning):
185 "Warned when making a HTTPS request without SNI available."
186 pass
187
188
189 class DependencyWarning(HTTPWarning):
190 """
191 Warned when an attempt is made to import a module with missing optional
192 dependencies.
193 """
194
195 pass
196
197
198 class ResponseNotChunked(ProtocolError, ValueError):
199 "Response needs to be chunked in order to read it as chunks."
200 pass
201
202
203 class BodyNotHttplibCompatible(HTTPError):
204 """
205 Body should be httplib.HTTPResponse like (have an fp attribute which
206 returns raw chunks) for read_chunked().
207 """
208
209 pass
210
211
212 class IncompleteRead(HTTPError, httplib_IncompleteRead):
213 """
214 Response length doesn't match expected Content-Length
215
216 Subclass of http_client.IncompleteRead to allow int value
217 for `partial` to avoid creating large objects on streamed
218 reads.
219 """
220
221 def __init__(self, partial, expected):
222 super(IncompleteRead, self).__init__(partial, expected)
223
224 def __repr__(self):
225 return "IncompleteRead(%i bytes read, %i more expected)" % (
226 self.partial,
227 self.expected,
228 )
229
230
231 class InvalidHeader(HTTPError):
232 "The header provided was somehow invalid."
233 pass
234
235
236 class ProxySchemeUnknown(AssertionError, ValueError):
237 "ProxyManager does not support the supplied scheme"
238 # TODO(t-8ch): Stop inheriting from AssertionError in v2.0.
239
240 def __init__(self, scheme):
241 message = "Not supported proxy scheme %s" % scheme
242 super(ProxySchemeUnknown, self).__init__(message)
243
244
245 class HeaderParsingError(HTTPError):
246 "Raised by assert_header_parsing, but we convert it to a log.warning statement."
247
248 def __init__(self, defects, unparsed_data):
249 message = "%s, unparsed data: %r" % (defects or "Unknown", unparsed_data)
250 super(HeaderParsingError, self).__init__(message)
251
252
253 class UnrewindableBodyError(HTTPError):
254 "urllib3 encountered an error when trying to rewind a body"
255 pass