Laravel Server Push Manager

Documentation

Usage

Supported Relations

The BabDev\ServerPushManager\Contracts\PushManager interface defines several helper methods for adding resources to a HTTP/2 Link response header with the appropriate relations, including:

  • preload() - Adds the resource with the "preload" relation to the Link header
  • dnsPrefetch() - Adds the resource with the "dns-prefetch" relation to the Link header
  • preconnect() - Adds the resource with the "preconnect" relation to the Link header
  • prefetch() - Adds the resource with the "prefetch" relation to the Link header
  • prerender() - Adds the resource with the "prerender" relation to the Link header

Each of these methods accepts two parameters:

  • $uri - The URI for the resource
  • $attributes - An optional array of additional attributes for the resource

Note that each of these methods returns the $uri passed into the method, this allows you to wrap other function calls within calls to the manager (see below for an example).

Within Blade Templates

You can specify which assets should have a server push directive directly within your Blade templates by calling the PushManager service. Because the PushManager returns the original URI, you can wrap calls to asset() or mix() with a call to the manager.

The below example requires the PushManager facade has been registered in your application.
<link href="{{ PushManager::preload(mix('css/app.css'), ['as' => 'stylesheet']) }}" rel="stylesheet">
<script src="{{ PushManager::preload(asset('js/app.js'), ['as' => 'script']) }}"></script>

Within PHP classes

You can access the PushManager service by injecting it as a dependency to your class or controller action, through the app() helper using the service ID ('babdev.push_manager') or the class name, or using the facade.

namespace App\Http\Controllers;

use BabDev\ServerPushManager\PushManager;
use Illuminate\Http\Request;

final class HomepageController
{
    private PushManager $pushManager;

    public function __construct(PushManager $pushManager)
    {
        $this->pushManager = $pushManager;
    }

    public function homepageWithConstructor()
    {
        $this->pushManager->preload('https://laravel.com/assets/css/laravel.css', ['as' => 'stylesheet']);

        return $this->renderHomepage();
    }

    public function homepageWithMethodInjection(Request $request, PushManager $pushManager)
    {
        $pushManager->preload('https://laravel.com/assets/css/laravel.css', ['as' => 'stylesheet']);

        return $this->renderHomepage();
    }

    public function homepageWithAppFunction()
    {
        /** @var PushManager $pushManager */
        $pushManager = app('babdev.push_manager');
        $pushManager->preload('https://laravel.com/assets/css/laravel.css', ['as' => 'stylesheet']);

        return $this->renderHomepage();
    }

    public function homepageWithFacade()
    {
        \PushManager::preload('https://laravel.com/assets/css/laravel.css', ['as' => 'stylesheet']);

        return $this->renderHomepage();
    }

    private function renderHomepage()
    {
        return view('homepage');
    }
}