---
# This is not a status code available in the standard, but it exists
# with significant prominence in the wild
set: 5
code: 599
title: Network Connect Timeout Error
---

This status code is not specified in any RFCs, but is used by some HTTP proxies
to signal a network connect timeout behind the proxy to a client in front of the
proxy.

Source: [unknown?][1]

[1]: <https://github.com/citricsquid/httpstatuses/issues/22>