Install Laravel 5.6

app/Http/Middleware/TrustProxies.php

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+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Http\Middleware;
+
+use Illuminate\Http\Request;
+use Fideloper\Proxy\TrustProxies as Middleware;
+
+/**
+ * This is the trust proxies middleware class.
+ *
+ * @author James Brooks <james@alt-three.com>
+ */
+class TrustProxies extends Middleware
+{
+    /**
+     * The trusted proxies for this application.
+     *
+     * @var array
+     */
+    protected $proxies;
+
+    /**
+     * The headers that should be used to detect proxies.
+     *
+     * @var int
+     */
+    protected $headers = Request::HEADER_X_FORWARDED_ALL;
+
+    /**
+     * Create new trust proxies instance.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        $this->proxies = empty(env('TRUSTED_PROXIES')) ? '*' : explode(',', trim(env('TRUSTED_PROXIES')));
+    }
+}