From 614c660ceb1a01f72761791824d7d8ffed0b4879 Mon Sep 17 00:00:00 2001
From: Maciej Mionskowski <maciej.mionskowski@form3.tech>
Date: Tue, 9 Jul 2024 15:03:25 +0200
Subject: [PATCH] errkit: detect permanent network errors when behind
 http/socks proxy

If HTTP(S)/SOCKS proxies are used the errors returned by http.Client are different.
---
 errkit/kind.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/errkit/kind.go b/errkit/kind.go
index 9e3cd6c..e64713c 100644
--- a/errkit/kind.go
+++ b/errkit/kind.go
@@ -126,6 +126,12 @@ func isNetworkPermanentErr(err *ErrorX) bool {
 		return true
 	case strings.Contains(v, "connect: connection refused"):
 		return true
+	case strings.Contains(v, "Unable to connect"):
+		// occurs when HTTP(S) proxy is used
+		return true
+	case strings.Contains(v, "host unreachable"):
+		// occurs when SOCKS proxy is used
+		return true
 	}
 	return false
 }