5×× SERVER ERROR
599 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.
Recommended:
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.
Recommended: