httpstatuses/contents/codes/502.md

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---
set: 5
code: 502
title: Bad Gateway
references:
"Rails HTTP Status Symbol": ":bad_gateway"
---
The 502 (Bad Gateway) status code indicates that the server, while acting as a
gateway or proxy, received an invalid response from an inbound server it
accessed while attempting to fulfill the request.
Source: [RFC7231 Section 6.6.3][1]
[1]: <http://tools.ietf.org/html/rfc7231#section-6.6.3>