From abca3e38b6aef91db1cd0b891c70cf91c80cb2fb Mon Sep 17 00:00:00 2001
From: xiaok29 <1526783667@qq.com>
Date: Thu, 5 Sep 2024 16:49:09 +0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=8E=88=20perf:?=
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Replace map[string]bool with map[string]struct{} to reduce memory footprint
---
 redirect.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/redirect.go b/redirect.go
index ed39584..f1cc433 100644
--- a/redirect.go
+++ b/redirect.go
@@ -72,9 +72,9 @@ func AllowedHostRedirectPolicy(hosts ...string) RedirectPolicy {
 // AllowedDomainRedirectPolicy allows redirect only if the redirected domain
 // match one of the domain that specified.
 func AllowedDomainRedirectPolicy(hosts ...string) RedirectPolicy {
-	domains := make(map[string]bool)
+	domains := make(map[string]struct{})
 	for _, h := range hosts {
-		domains[strings.ToLower(getDomain(h))] = true
+		domains[strings.ToLower(getDomain(h))] = struct{}{}
 	}
 
 	return func(req *http.Request, via []*http.Request) error {