httpstatuses/contents/codes/414.md

---
set: 4
code: 414
title: Request-URI Too Long
references:
    "Rails HTTP Status Symbol": ":request_uri_too_long"
    "Go HTTP Status Constant": "http.StatusRequestURITooLong"
---

The server is refusing to service the request because the
request-target<sup>[1](#ref-1)</sup> is longer than the server is willing to
interpret.

This rare condition is only likely to occur when a client has improperly
converted a POST request to a GET request with long query information, when the
client has descended into a "black hole" of redirection (e.g., a redirected URI
prefix that points to a suffix of itself) or when the server is under attack by
a client attempting to exploit potential security holes.

A 414 response is cacheable by default; i.e., unless otherwise indicated by the
method definition or explicit cache controls <sup>[2](#ref-2)</sup>.

---

* <span id="ref-1"><sup>1</sup> Content Negotiation
[RFC7230 Section 5.3][2]</span>
* <span id="ref-2"><sup>2</sup> Calculating Heuristic Freshness
RFC7234 Section 4.2.2][3]</span>
* Source: [RFC7231 Section 6.5.12][1]

[1]: <http://tools.ietf.org/html/rfc7231#section-6.5.12>
[2]: <http://tools.ietf.org/html/rfc7231#section-5.3>
[3]: <http://tools.ietf.org/html/rfc7234#section-4.2.2>