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81 lines
2.3 KiB
Python
81 lines
2.3 KiB
Python
from __future__ import absolute_import
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from ..packages.six.moves import http_client as httplib
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from ..exceptions import HeaderParsingError
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def is_fp_closed(obj):
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"""
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Checks whether a given file-like object is closed.
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:param obj:
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The file-like object to check.
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"""
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try:
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# Check `isclosed()` first, in case Python3 doesn't set `closed`.
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# GH Issue #928
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return obj.isclosed()
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except AttributeError:
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pass
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try:
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# Check via the official file-like-object way.
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return obj.closed
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except AttributeError:
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pass
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try:
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# Check if the object is a container for another file-like object that
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# gets released on exhaustion (e.g. HTTPResponse).
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return obj.fp is None
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except AttributeError:
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pass
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raise ValueError("Unable to determine whether fp is closed.")
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def assert_header_parsing(headers):
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"""
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Asserts whether all headers have been successfully parsed.
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Extracts encountered errors from the result of parsing headers.
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Only works on Python 3.
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:param headers: Headers to verify.
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:type headers: `httplib.HTTPMessage`.
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:raises urllib3.exceptions.HeaderParsingError:
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If parsing errors are found.
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"""
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# This will fail silently if we pass in the wrong kind of parameter.
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# To make debugging easier add an explicit check.
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if not isinstance(headers, httplib.HTTPMessage):
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raise TypeError('expected httplib.Message, got {0}.'.format(
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type(headers)))
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defects = getattr(headers, 'defects', None)
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get_payload = getattr(headers, 'get_payload', None)
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unparsed_data = None
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if get_payload: # Platform-specific: Python 3.
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unparsed_data = get_payload()
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if defects or unparsed_data:
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raise HeaderParsingError(defects=defects, unparsed_data=unparsed_data)
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def is_response_to_head(response):
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"""
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Checks whether the request of a response has been a HEAD-request.
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Handles the quirks of AppEngine.
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:param conn:
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:type conn: :class:`httplib.HTTPResponse`
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"""
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# FIXME: Can we do this somehow without accessing private httplib _method?
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method = response._method
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if isinstance(method, int): # Platform-specific: Appengine
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return method == 3
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return method.upper() == 'HEAD'
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