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| 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 URLSchemeUnknown(LocationValueError): | |
| """Raised when a URL input has an unsupported scheme.""" | |
| def __init__(self, scheme): | |
| message = "Not supported URL scheme %s" % scheme | |
| super(URLSchemeUnknown, self).__init__(message) | |
| self.scheme = scheme | |
| 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 TLS/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 ResponseNotChunked(ProtocolError, ValueError): | |
| """Response needs to be chunked in order to read it as chunks.""" | |
| pass | |
| class BodyNotHttplibCompatible(HTTPError): | |
| """ | |
| Body should be :class:`http.client.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 :class:`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 InvalidChunkLength(HTTPError, httplib_IncompleteRead): | |
| """Invalid chunk length in a chunked response.""" | |
| def __init__(self, response, length): | |
| super(InvalidChunkLength, self).__init__( | |
| response.tell(), response.length_remaining | |
| ) | |
| self.response = response | |
| self.length = length | |
| def __repr__(self): | |
| return "InvalidChunkLength(got length %r, %i bytes read)" % ( | |
| self.length, | |
| self.partial, | |
| ) | |
| class InvalidHeader(HTTPError): | |
| """The header provided was somehow invalid.""" | |
| pass | |
| class ProxySchemeUnknown(AssertionError, URLSchemeUnknown): | |
| """ProxyManager does not support the supplied scheme""" | |
| # TODO(t-8ch): Stop inheriting from AssertionError in v2.0. | |
| def __init__(self, scheme): | |
| # 'localhost' is here because our URL parser parses | |
| # localhost:8080 -> scheme=localhost, remove if we fix this. | |
| if scheme == "localhost": | |
| scheme = None | |
| if scheme is None: | |
| message = "Proxy URL had no scheme, should start with http:// or https://" | |
| else: | |
| message = ( | |
| "Proxy URL had unsupported scheme %s, should use http:// or https://" | |
| % scheme | |
| ) | |
| super(ProxySchemeUnknown, self).__init__(message) | |
| class ProxySchemeUnsupported(ValueError): | |
| """Fetching HTTPS resources through HTTPS proxies is unsupported""" | |
| pass | |
| 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 | |