| from __future__ import absolute_import |
| from .packages.six.moves.http_client import IncompleteRead as httplib_IncompleteRead |
| |
| # Base Exceptions |
| |
| |
| class HTTPError(Exception): |
| "Base exception used by this module." |
| pass |
| |
| |
| class HTTPWarning(Warning): |
| "Base warning 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." |
| |
| def __init__(self, message, error, *args): |
| super(ProxyError, self).__init__(message, error, *args) |
| self.original_error = error |
| |
| |
| class DecodeError(HTTPError): |
| "Raised when automatic decoding based on Content-Type fails." |
| pass |
| |
| |
| class ProtocolError(HTTPError): |
| "Raised when something unexpected happens mid-request/response." |
| pass |
| |
| |
| #: Renamed to ProtocolError but aliased for backwards compatibility. |
| ConnectionError = ProtocolError |
| |
| |
| # Leaf Exceptions |
| |
| |
| class MaxRetryError(RequestError): |
| """Raised when the maximum number of retries is exceeded. |
| |
| :param pool: The connection pool |
| :type pool: :class:`~urllib3.connectionpool.HTTPConnectionPool` |
| :param string url: The requested Url |
| :param exceptions.Exception reason: The underlying error |
| |
| """ |
| |
| def __init__(self, pool, url, reason=None): |
| self.reason = reason |
| |
| message = "Max retries exceeded with url: %s (Caused by %r)" % (url, reason) |
| |
| 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 NewConnectionError(ConnectTimeoutError, PoolError): |
| "Raised when we fail to establish a new connection. Usually ECONNREFUSED." |
| 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 LocationValueError(ValueError, HTTPError): |
| "Raised when there is something wrong with a given URL input." |
| pass |
| |
| |
| class LocationParseError(LocationValueError): |
| "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 |
| |
| |
| class ResponseError(HTTPError): |
| "Used as a container for an error reason supplied in a MaxRetryError." |
| GENERIC_ERROR = "too many error responses" |
| SPECIFIC_ERROR = "too many {status_code} error responses" |
| |
| |
| class SecurityWarning(HTTPWarning): |
| "Warned when performing security reducing actions" |
| pass |
| |
| |
| class SubjectAltNameWarning(SecurityWarning): |
| "Warned when connecting to a host with a certificate missing a SAN." |
| pass |
| |
| |
| class InsecureRequestWarning(SecurityWarning): |
| "Warned when making an unverified HTTPS request." |
| pass |
| |
| |
| class SystemTimeWarning(SecurityWarning): |
| "Warned when system time is suspected to be wrong" |
| pass |
| |
| |
| class InsecurePlatformWarning(SecurityWarning): |
| "Warned when certain SSL configuration is not available on a platform." |
| pass |
| |
| |
| class SNIMissingWarning(HTTPWarning): |
| "Warned when making a HTTPS request without SNI available." |
| pass |
| |
| |
| class DependencyWarning(HTTPWarning): |
| """ |
| Warned when an attempt is made to import a module with missing optional |
| dependencies. |
| """ |
| |
| pass |
| |
| |
| class InvalidProxyConfigurationWarning(HTTPWarning): |
| """ |
| Warned when using an HTTPS proxy and an HTTPS URL. Currently |
| urllib3 doesn't support HTTPS proxies and the proxy will be |
| contacted via HTTP instead. This warning can be fixed by |
| changing your HTTPS proxy URL into an HTTP proxy URL. |
| |
| If you encounter this warning read this: |
| https://github.com/urllib3/urllib3/issues/1850 |
| """ |
| |
| pass |
| |
| |
| class ResponseNotChunked(ProtocolError, ValueError): |
| "Response needs to be chunked in order to read it as chunks." |
| pass |
| |
| |
| class BodyNotHttplibCompatible(HTTPError): |
| """ |
| Body should be httplib.HTTPResponse like (have an fp attribute which |
| returns raw chunks) for read_chunked(). |
| """ |
| |
| pass |
| |
| |
| class IncompleteRead(HTTPError, httplib_IncompleteRead): |
| """ |
| Response length doesn't match expected Content-Length |
| |
| Subclass of http_client.IncompleteRead to allow int value |
| for `partial` to avoid creating large objects on streamed |
| reads. |
| """ |
| |
| def __init__(self, partial, expected): |
| super(IncompleteRead, self).__init__(partial, expected) |
| |
| def __repr__(self): |
| return "IncompleteRead(%i bytes read, %i more expected)" % ( |
| self.partial, |
| self.expected, |
| ) |
| |
| |
| class InvalidHeader(HTTPError): |
| "The header provided was somehow invalid." |
| pass |
| |
| |
| class ProxySchemeUnknown(AssertionError, ValueError): |
| "ProxyManager does not support the supplied scheme" |
| # TODO(t-8ch): Stop inheriting from AssertionError in v2.0. |
| |
| def __init__(self, scheme): |
| message = "Not supported proxy scheme %s" % scheme |
| super(ProxySchemeUnknown, self).__init__(message) |
| |
| |
| class HeaderParsingError(HTTPError): |
| "Raised by assert_header_parsing, but we convert it to a log.warning statement." |
| |
| def __init__(self, defects, unparsed_data): |
| message = "%s, unparsed data: %r" % (defects or "Unknown", unparsed_data) |
| super(HeaderParsingError, self).__init__(message) |
| |
| |
| class UnrewindableBodyError(HTTPError): |
| "urllib3 encountered an error when trying to rewind a body" |
| pass |