4×× Client Error

421 Misdirected Request

The request was directed at a server that is not able to produce a response. This can be sent by a server that is not configured to produce responses for the combination of scheme and authority that are included in the request URI.

Clients receiving a 421 Misdirected Request response from a server MAY retry the request -- whether the request method is idempotent or not -- over a different connection. This is possible if a connection is reused1or if an alternative service is selected ALT-SVC.

This status code MUST NOT be generated by proxies.

A 421 response is cacheable by default, i.e., unless otherwise indicated by the method definition or explicit cache controls2.


421 Code References

.NET HTTP Status Enum HttpStatusCode.MisdirectedRequest

Rust HTTP Status Constant http::StatusCode::MISDIRECTED_REQUEST

Rails HTTP Status Symbol :misdirected_request

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