Simplify localhost IP detection

jahooma · jahooma · commit 634d4c7b24ba · 2026-04-28T18:44:24.000-07:00
diff --git a/web/src/server/free-mode-country.ts b/web/src/server/free-mode-country.ts
@@ -59,11 +59,10 @@ type FreeModeCountryAccessOptions = {
   allowLocalhost?: boolean
 }
 
-const LOCALHOST_IPS = new Set(['127.0.0.1', '::1', '::ffff:127.0.0.1'])
+const LOCALHOST_IPS = new Set(['::1', '::ffff:127.0.0.1'])
 
-function isLocalhostIp(ip: string | undefined): boolean {
-  if (!ip) return false
-  return LOCALHOST_IPS.has(ip) || ip.startsWith('127.')
+function isLocalhostIp(ip: string): boolean {
+  return ip.startsWith('127.') || LOCALHOST_IPS.has(ip)
 }
 
 type ResolvedCountryAccess = Omit<

Original file line number	Diff line number	Diff line change
`@@ -59,11 +59,10 @@ type FreeModeCountryAccessOptions = {`
`59`	`59`	`allowLocalhost?: boolean`
`60`	`60`	`}`
`61`	`61`
`62`		`-const LOCALHOST_IPS = new Set(['127.0.0.1', '::1', '::ffff:127.0.0.1'])`
	`62`	`+const LOCALHOST_IPS = new Set(['::1', '::ffff:127.0.0.1'])`
`63`	`63`
`64`		`-function isLocalhostIp(ip: string \| undefined): boolean {`
`65`		`- if (!ip) return false`
`66`		`- return LOCALHOST_IPS.has(ip) \|\| ip.startsWith('127.')`
	`64`	`+function isLocalhostIp(ip: string): boolean {`
	`65`	`+ return ip.startsWith('127.') \|\| LOCALHOST_IPS.has(ip)`
`67`	`66`	`}`
`68`	`67`
`69`	`68`	`type ResolvedCountryAccess = Omit<`