style:类型约束

src/config.php

@@ -1,6 +1,7 @@
 <?php
 return [
     'host'          => env('mq_host', 'http://192.168.21.170:8085'),
+    'callback_host' => env('mq_callback_host', 'http://192.168.21.170:8085'),
     'callback'      => '/rocketmq/producer/notify',
     'subscribe'     => [
 

src/connection/Config.php

@@ -28,36 +28,31 @@ class Config
     }
 
     /**
-     * @param mixed $host
+     * @param string $host
      */
-    public function setHost($host): void
+    public function setHost(string $host): void
     {
         $this->host = $host;
     }
 
     /**
-     * @return mixed
+     * @return int
      */
     public function getTimeOut()
     {
-        return $this->timeOut;
+        return $this->timeOut ?? 60;
     }
 
     /**
-     * @param mixed $timeOut
+     * @param int $timeOut
      */
-    public function setTimeOut($timeOut): void
+    public function setTimeOut(int $timeOut): void
     {
         $this->timeOut = $timeOut;
     }
 
-    public function getProducerUrl(): string
-    {
-        return $this->getHost().'notifyUsing';
-    }
-
     public function getBackUrl(): string
     {
-        return $this->getHost().config('rocket_mq.callback');
+        return config('rocket_mq.callback_host').config('rocket_mq.callback');
     }
 }