From d26559316fa6fae880351637365f07947a2b79f6 Mon Sep 17 00:00:00 2001
From: Chirag Maheshwari <34106488+chir4gm@users.noreply.github.com>
Date: Sun, 7 Aug 2022 09:33:37 +0530
Subject: Replace strings.Index with strings.Cut (#4932)

---
 modules/caddyhttp/reverseproxy/reverseproxy.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'modules/caddyhttp/reverseproxy')

diff --git a/modules/caddyhttp/reverseproxy/reverseproxy.go b/modules/caddyhttp/reverseproxy/reverseproxy.go
index c800b39..8887511 100644
--- a/modules/caddyhttp/reverseproxy/reverseproxy.go
+++ b/modules/caddyhttp/reverseproxy/reverseproxy.go
@@ -658,8 +658,8 @@ func (h Handler) addForwardedHeaders(req *http.Request) error {
 
 	// Client IP may contain a zone if IPv6, so we need
 	// to pull that out before parsing the IP
-	if idx := strings.IndexByte(clientIP, '%'); idx >= 0 {
-		clientIP = clientIP[:idx]
+	if before, _, found := strings.Cut(clientIP, "%"); found {
+		clientIP = before
 	}
 	ip := net.ParseIP(clientIP)
 	if ip == nil {
-- 
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