599 Network Connect Timeout Error

HTTP response status code 599 Network Connect Timeout Error is an unofficial HTTP status code used by some proxies to indicate that there has been a HTTP Connection timeout behind the proxy to a HTTP client in front of the proxy.

Usage

The HTTP status code 599 Network Connect Timeout Error is primarily used as an informal convention to indicate the HTTP client is unable to make a HTTP Connection to the network due to a connection timeout, and the HTTP request remains unfulfilled.

As an unofficial HTTP status code, developers may be using this HTTP status code informally to indicate that the HTTP requests executed by their code failed because no local network was found or the HTTP connections to the local network timed out.

Takeaway

The 599 Network Connect Timeout Error status code is a server error used to indicate that there has been a network connect timeout while trying to establish a HTTP Connection.