View file vendor/fideloper/proxy/src/TrustedProxyServiceProvider.php

<?php

namespace Fideloper\Proxy;

use Illuminate\Foundation\Application as LaravelApplication;
use Illuminate\Support\ServiceProvider;
use Laravel\Lumen\Application as LumenApplication;

class TrustedProxyServiceProvider extends ServiceProvider
{
    /**
     * Boot the service provider.
     *
     * @return void
     */
    public function boot()
    {
        $source = realpath($raw = __DIR__.'/../config/trustedproxy.php') ?: $raw;

        if ($this->app instanceof LaravelApplication && $this->app->runningInConsole()) {
            $this->publishes([$source => config_path('trustedproxy.php')]);
        } elseif ($this->app instanceof LumenApplication) {
            $this->app->configure('trustedproxy');
        }


        if ($this->app instanceof LaravelApplication && ! $this->app->configurationIsCached()) {
            $this->mergeConfigFrom($source, 'trustedproxy');
        }
    }

    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}