From f745eb578a20b438c53e5b8be1d323f4a9f364fb Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Thu, 18 Jan 2018 23:31:14 +0100
Subject: [PATCH] Check HTTP error codes

---
 dnscrypt-proxy/sources.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dnscrypt-proxy/sources.go b/dnscrypt-proxy/sources.go
index fdae9db0..f249f935 100644
--- a/dnscrypt-proxy/sources.go
+++ b/dnscrypt-proxy/sources.go
@@ -62,6 +62,9 @@ func fetchWithCache(url string, cacheFile string, refreshDelay time.Duration) (i
 		var resp *http.Response
 		dlog.Infof("Loading source information from URL [%s]", url)
 		resp, err = http.Get(url)
+		if resp.StatusCode < 200 || resp.StatusCode > 299 {
+			err = fmt.Errorf("Webserver returned code %d", resp.StatusCode)
+		}
 		if err != nil {
 			delayTillNextUpdate = SourcesUpdateDelayAfterFailure
 			if usableCache {
@@ -85,6 +88,7 @@ func fetchWithCache(url string, cacheFile string, refreshDelay time.Duration) (i
 			}
 		}
 	}
+	err = nil
 	in = string(bin)
 	return
 }