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formatdateÚ parsedateÚ parsedate_tz)ÚdatetimeÚ timedeltaz%a, %d %b %Y %H:%M:%S GMTc C s |p
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t ¡ }|| S ©N)r Úutcnow)ÚdeltaÚdate© r úZD:\z\workplace\VsCode\pyvenv\venv\Lib\site-packages\pip/_vendor/cachecontrol/heuristics.pyÚ expire_after s r c C s t t | ¡ ¡S r )r ÚcalendarÚtimegmÚ timetuple)Údtr r r Údatetime_to_header s r c @ s$ e Zd Zdd Zdd Zdd ZdS )Ú BaseHeuristicc C s dS )a!
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Return a valid 1xx warning header value describing the cache
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adjustments.
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The response is provided too allow warnings like 113
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http://tools.ietf.org/html/rfc7234#section-5.5.4 where we need
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to explicitly say response is over 24 hours old.
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z110 - "Response is Stale"r ©ÚselfÚresponser r r Úwarning s zBaseHeuristic.warningc C s i S )zïUpdate the response headers with any new headers.
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NOTE: This SHOULD always include some Warning header to
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signify that the response was cached by the client, not
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by way of the provided headers.
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r r r r r Úupdate_headers! s z BaseHeuristic.update_headersc C s@ | |¡}|r<|j |¡ | |¡}|d k r<|j d|i¡ |S )NÚWarning)r ÚheadersÚupdater )r r Zupdated_headersZwarning_header_valuer r r Úapply* s
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zBaseHeuristic.applyN)Ú__name__Ú
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__module__Ú __qualname__r r r r r r r r s r c @ s e Zd ZdZdd ZdS )Ú OneDayCachezM
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Cache the response by providing an expires 1 day in the
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future.
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Cache **all** requests for a defined time period.
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c K s t f || _d S r )r r )r Úkwr r r Ú__init__L s zExpiresAfter.__init__c C s t | j}t|ddS )Nr% )r! r& )r r r )r r r! r r r r O s
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to calculate a reasonable value.
|
|
Firefox also does something like this per
|
https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching_FAQ
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http://lxr.mozilla.org/mozilla-release/source/netwerk/protocol/http/nsHttpResponseHead.cpp#397
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Unlike mozilla we limit this to 24-hr.
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