2015-11-06 21:39:33 +01:00
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---
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set: 5
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code: 501
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title: Not Implemented
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2015-11-07 06:05:36 +01:00
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references:
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"Rails HTTP Status Symbol": ":not_implemented"
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2015-11-06 21:39:33 +01:00
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---
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2015-11-09 02:54:09 +01:00
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The server does not support the functionality required to fulfill the request.
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2015-11-07 06:48:31 +01:00
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This is the appropriate response when the server does not recognize the request
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method and is not capable of supporting it for any resource.
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2015-11-07 06:05:36 +01:00
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A 501 response is cacheable by default; i.e., unless otherwise indicated by the
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2015-11-09 02:54:09 +01:00
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method definition or explicit cache controls<sup>[1](#ref-1)</sup>.
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2015-11-07 06:05:36 +01:00
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2015-11-09 02:54:09 +01:00
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---
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* <span id="ref-1"><sup>1</sup> Calculating Heuristic Freshness
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[RFC7234 Section 4.2.2][2]</span>
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* Source: [RFC7231 Section 6.6.2][1]
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2015-11-07 06:05:36 +01:00
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[1]: <http://tools.ietf.org/html/rfc7231#section-6.6.2>
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[2]: <http://tools.ietf.org/html/rfc7234#section-4.2.2>
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