| # 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 |