2015-11-06 22:55:41 +01:00
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---
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set: 4
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code: 421
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title: Misdirected Request
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2015-11-07 05:34:40 +01:00
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references:
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"Rails HTTP Status Symbol": ":misdirected_request"
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2015-11-06 22:55:41 +01:00
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---
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2015-11-09 02:44:05 +01:00
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The request was directed at a server that is not able to produce a response.
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This can be sent by a server that is not configured to produce responses for the
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combination of scheme and authority that are included in the request URI.
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2015-11-07 05:34:40 +01:00
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2015-11-09 02:44:05 +01:00
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Clients receiving a 421 Misdirected Request response from a server MAY retry
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2015-11-07 05:34:40 +01:00
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the request -- whether the request method is idempotent or not -- over a
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2015-11-09 02:44:05 +01:00
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different connection. This is possible if a connection is
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reused<sup>[1](#ref-1)</sup>or if an alternative service is selected
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2015-11-07 05:34:40 +01:00
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[ALT-SVC][3].
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This status code MUST NOT be generated by proxies.
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A 421 response is cacheable by default, i.e., unless otherwise indicated by the
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2015-11-09 02:44:05 +01:00
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method definition or explicit cache controls<sup>[2](#ref-2)</sup>.
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2015-11-07 05:34:40 +01:00
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2015-11-09 02:44:05 +01:00
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---
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* <span id="ref-1"><sup>1</sup> Connection Reuse
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[RFC7540 Section 9.1.1][2]</span>
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* <span id="ref-2"><sup>2</sup> Calculating Heuristic Freshness
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[RFC7234 Section 4.2.2][4]</span>
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* Source: [RFC7540 Section 9.1.2][1]
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2015-11-07 05:34:40 +01:00
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[1]: <http://tools.ietf.org/html/rfc7540#section-9.1.2>
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[2]: <http://tools.ietf.org/html/rfc7540#section-9.1.1>
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[3]: <http://tools.ietf.org/html/rfc7540#ref-ALT-SVC>
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[4]: <http://tools.ietf.org/html/rfc7234#section-4.2.2>
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