From cb831b34caf9c526e5ecc18996fa89665f7e9616 Mon Sep 17 00:00:00 2001
From: Dan Gohman
variant error-code
These cases are inspired by the IANA HTTP Proxy Error Types: -https://www.iana.org/assignments/http-proxy-status/http-proxy-status.xhtml#table-http-proxy-error-types
+https://www.iana.org/assignments/http-proxy-status/http-proxy-status.xhtml#table-http-proxy-error-typesDNS-timeout
variant error-code
These cases are inspired by the IANA HTTP Proxy Error Types: -https://www.iana.org/assignments/http-proxy-status/http-proxy-status.xhtml#table-http-proxy-error-types
+https://www.iana.org/assignments/http-proxy-status/http-proxy-status.xhtml#table-http-proxy-error-types