[1.x] Improve TLS check (#158)

* improve tls check

* wip

src/Servers/Reverb/Factory.php

@@ -53,7 +53,7 @@ public static function make(
 
         $options['tls'] = static::configureTls($options['tls'] ?? [], $hostname);
 
-        $uri = empty($options['tls']) ? "{$host}:{$port}" : "tls://{$host}:{$port}";
+        $uri = static::usesTls($options['tls']) ? "tls://{$host}:{$port}" : "{$host}:{$port}";
 
         return new HttpServer(
             new SocketServer($uri, $options, $loop),
@@ -115,9 +115,7 @@ protected static function configureTls(array $context, ?string $hostname): array
     {
         $context = array_filter($context, fn ($value) => $value !== null);
 
-        $usesTls = ($context['local_cert'] ?? false) || ($context['local_pk'] ?? false);
-
-        if (! $usesTls && $hostname && Certificate::exists($hostname)) {
+        if (! static::usesTls($context) && $hostname && Certificate::exists($hostname)) {
             [$certificate, $key] = Certificate::resolve($hostname);
 
             $context['local_cert'] = $certificate;
@@ -127,4 +125,14 @@ protected static function configureTls(array $context, ?string $hostname): array
 
         return $context;
     }
+
+    /**
+     * Determine whether the server uses TLS.
+     *
+     * @param  array  $context<string,  mixed>
+     */
+    protected static function usesTls(array $context): bool
+    {
+        return ($context['local_cert'] ?? false) || ($context['local_pk'] ?? false);
+    }
 }