Support IPv4 HTTP public gateway entries

backend/internal/nginxgateway/gateway.go

@@ -58,7 +58,7 @@ func parseManagedEntry(body string) (nginxconfig.RenderOptions, error) {
 	}
 	domains := managedDomain.FindAllStringSubmatch(body, -1)
 	ports := portPattern.FindStringSubmatch(body)
-	if len(domains) == 0 || len(ports) != 2 || !tlsservice.ValidDomain(domains[0][1]) {
+	if len(domains) == 0 || len(ports) != 2 || !tlsservice.ValidPublicHost(scheme, domains[0][1]) {
 		return nginxconfig.RenderOptions{}, errors.New("无法识别托管站点的公网地址")
 	}
 	for _, match := range domains[1:] {
@@ -363,8 +363,8 @@ func RunEntryWithAuth(opts nginxconfig.RenderOptions, routes gin.RoutesInfo, aut
 		scheme = "https"
 	}
 	opts.Domain, opts.Scheme = domain, scheme
-	if !tlsservice.ValidDomain(domain) {
-		return errors.New("请先保存有效域名")
+	if !tlsservice.ValidPublicHost(scheme, domain) {
+		return errors.New("请先保存有效域名；HTTP 也支持 IPv4 地址")
 	}
 	if !tlsservice.ValidScheme(scheme) {
 		return errors.New("协议仅支持 http 或 https")