# -*- test-case-name: twisted.protocols.haproxy.test -*- # Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. """ HAProxy specific exceptions. """ import contextlib import sys from twisted.python import compat class InvalidProxyHeader(Exception): """ The provided PROXY protocol header is invalid. """ class InvalidNetworkProtocol(InvalidProxyHeader): """ The network protocol was not one of TCP4 TCP6 or UNKNOWN. """ class MissingAddressData(InvalidProxyHeader): """ The address data is missing or incomplete. """ @contextlib.contextmanager def convertError(sourceType, targetType): """ Convert an error into a different error type. @param sourceType: The type of exception that should be caught and converted. @type sourceType: L{Exception} @param targetType: The type of exception to which the original should be converted. @type targetType: L{Exception} """ try: yield None except sourceType: compat.reraise(targetType(), sys.exc_info()[-1])
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