Removed the HTTP layer and started to use HTTPlug

CHANGELOG.md

@@ -11,6 +11,10 @@ Starting with version 5, the Facebook PHP SDK follows [SemVer](http://semver.org
   - Replace custom CSPRNG implementation with `paragonie/random_compat` (#644)
   - Removed the built-in autoloader in favor of composer's autoloader (#646)
   - Big integers in signed requests get decoded as `string` instead of `float` (#699)
+  - We use an HTTP client abstraction called HTTPlug to give the user more control over *how* to send PSR7 messages. See updated installation instructions. 
+  - Removed option `http_client_handler`
+  - Added option `http_client` which should be an object implementing `\Http\Client\HttpClient`
+  - Removed functions `FacebookClient::setHttpClientHandler()` and `FacebookClient::getHttpClientHandler()` in favor for `FacebookClient::getHttpClient()` and `FacebookClient::setHttpClient()`.
 
 ## 5.x
 

README.md

@@ -15,9 +15,11 @@ This repository contains the open source PHP SDK that allows you to access the F
 The Facebook PHP SDK can be installed with [Composer](https://getcomposer.org/). Run this command:
 
 ```sh
-composer require facebook/graph-sdk
+composer require facebook/graph-sdk php-http/curl-client guzzlehttp/psr7
 ```
 
+Why the extra packages? We give you the flexibility to choose what HTTP client (e.g. cURL or Guzzle) to use and what PSR-7 implementation you prefer. Read more about this at the [HTTPlug documentation](http://php-http.readthedocs.io/en/latest/httplug/users.html).
+
 
 ## Usage
 

composer.json

@@ -15,14 +15,17 @@
         "sort-packages": true
     },
     "require": {
-        "php": "^7.1"
+        "php": "^7.1",
+        "psr/http-message": "^1.0",
+        "php-http/client-implementation": "^1.0",
+        "php-http/httplug": "^1.0",
+        "php-http/discovery": "^1.0",
+
+        "php-http/message": "^1.0"
     },
     "require-dev": {
-        "guzzlehttp/guzzle": "^5.3.1",
-        "phpunit/phpunit": "^6.2"
-    },
-    "suggest": {
-        "guzzlehttp/guzzle": "Allows for implementation of the Guzzle HTTP client"
+        "phpunit/phpunit": "^6.2",
+        "php-http/guzzle6-adapter": "^1.0"
     },
     "autoload": {
         "psr-4": {

docs/reference/FacebookVideo.md

@@ -24,6 +24,8 @@ $myVideoFileToUpload = $fb->videoToUpload('/path/to/video-file.mp4'),
 
 Partial file uploads are possible using the `$maxLength` and `$offset` parameters which provide the same functionality as the `$maxlen` and `$offset` parameters on the [`stream_get_contents()` PHP function](http://php.net/stream_get_contents).
 
+> **Warning:** Uploading videos may cause a timeout. Make sure to configure your HTTP client to increase timeout time before uploading videos.
+
 ## Usage
 
 In Graph v2.3, functionality was added to [upload video files in chunks](https://developers.facebook.com/docs/graph-api/video-uploads#resumable). The PHP SDK provides a handy API to easily upload video files in chunks via the [`uploadVideo()` method](Facebook.md#uploadvideo).

src/Facebook.php

@@ -32,14 +32,14 @@
 use Facebook\GraphNodes\GraphEdge;
 use Facebook\Url\UrlDetectionInterface;
 use Facebook\Url\FacebookUrlDetectionHandler;
-use Facebook\HttpClients\HttpClientsFactory;
 use Facebook\PersistentData\PersistentDataFactory;
 use Facebook\PersistentData\PersistentDataInterface;
 use Facebook\Helpers\FacebookCanvasHelper;
 use Facebook\Helpers\FacebookJavaScriptHelper;
 use Facebook\Helpers\FacebookPageTabHelper;
 use Facebook\Helpers\FacebookRedirectLoginHelper;
 use Facebook\Exceptions\FacebookSDKException;
+use Http\Client\HttpClient;
 
 /**
  * Class Facebook
@@ -117,7 +117,7 @@ public function __construct(array $config = [])
             'app_secret' => getenv(static::APP_SECRET_ENV_NAME),
             'default_graph_version' => null,
             'enable_beta_mode' => false,
-            'http_client_handler' => null,
+            'http_client' => null,
             'persistent_data_handler' => null,
             'url_detection_handler' => null,
         ], $config);
@@ -128,13 +128,16 @@ public function __construct(array $config = [])
         if (!$config['app_secret']) {
             throw new FacebookSDKException('Required "app_secret" key not supplied in config and could not find fallback environment variable "' . static::APP_SECRET_ENV_NAME . '"');
         }
+        if ($config['http_client'] !== null && !$config['http_client'] instanceof HttpClient) {
+            throw new \InvalidArgumentException('Required "http_client" key to be null or an instance of \Http\Client\HttpClient');
+        }
         if (!$config['default_graph_version']) {
             throw new \InvalidArgumentException('Required "default_graph_version" key not supplied in config');
         }
 
         $this->app = new FacebookApp($config['app_id'], $config['app_secret']);
         $this->client = new FacebookClient(
-            HttpClientsFactory::createHttpClient($config['http_client_handler']),
+            $config['http_client'],
             $config['enable_beta_mode']
         );
         $this->setUrlDetectionHandler($config['url_detection_handler'] ?: new FacebookUrlDetectionHandler());

src/FacebookClient.php

@@ -23,10 +23,10 @@
  */
 namespace Facebook;
 
-use Facebook\HttpClients\FacebookHttpClientInterface;
-use Facebook\HttpClients\FacebookCurlHttpClient;
-use Facebook\HttpClients\FacebookStreamHttpClient;
 use Facebook\Exceptions\FacebookSDKException;
+use Http\Client\HttpClient;
+use Http\Discovery\HttpClientDiscovery;
+use Http\Discovery\MessageFactoryDiscovery;
 
 /**
  * Class FacebookClient
@@ -76,9 +76,9 @@ class FacebookClient
     protected $enableBetaMode = false;
 
     /**
-     * @var FacebookHttpClientInterface HTTP client handler.
+     * @var HttpClient HTTP client handler.
      */
-    protected $httpClientHandler;
+    protected $httpClient;
 
     /**
      * @var int The number of calls that have been made to Graph.
@@ -88,43 +88,33 @@ class FacebookClient
     /**
      * Instantiates a new FacebookClient object.
      *
-     * @param FacebookHttpClientInterface|null $httpClientHandler
-     * @param boolean                          $enableBeta
+     * @param HttpClient|null $httpClient
+     * @param boolean         $enableBeta
      */
-    public function __construct(FacebookHttpClientInterface $httpClientHandler = null, $enableBeta = false)
+    public function __construct(HttpClient $httpClient = null, $enableBeta = false)
     {
-        $this->httpClientHandler = $httpClientHandler ?: $this->detectHttpClientHandler();
+        $this->httpClient = $httpClient ?: HttpClientDiscovery::find();
         $this->enableBetaMode = $enableBeta;
     }
 
     /**
      * Sets the HTTP client handler.
      *
-     * @param FacebookHttpClientInterface $httpClientHandler
+     * @param HttpClient $httpClient
      */
-    public function setHttpClientHandler(FacebookHttpClientInterface $httpClientHandler)
+    public function setHttpClient(HttpClient $httpClient)
     {
-        $this->httpClientHandler = $httpClientHandler;
+        $this->httpClient = $httpClient;
     }
 
     /**
      * Returns the HTTP client handler.
      *
-     * @return FacebookHttpClientInterface
+     * @return HttpClient
      */
-    public function getHttpClientHandler()
+    public function getHttpClient()
     {
-        return $this->httpClientHandler;
-    }
-
-    /**
-     * Detects which HTTP client handler to use.
-     *
-     * @return FacebookHttpClientInterface
-     */
-    public function detectHttpClientHandler()
-    {
-        return extension_loaded('curl') ? new FacebookCurlHttpClient() : new FacebookStreamHttpClient();
+        return $this->httpClient;
     }
 
     /**
@@ -203,32 +193,30 @@ public function sendRequest(FacebookRequest $request)
 
         list($url, $method, $headers, $body) = $this->prepareRequestMessage($request);
 
-        // Since file uploads can take a while, we need to give more time for uploads
-        $timeOut = static::DEFAULT_REQUEST_TIMEOUT;
-        if ($request->containsFileUploads()) {
-            $timeOut = static::DEFAULT_FILE_UPLOAD_REQUEST_TIMEOUT;
-        } elseif ($request->containsVideoUploads()) {
-            $timeOut = static::DEFAULT_VIDEO_UPLOAD_REQUEST_TIMEOUT;
-        }
-
-        // Should throw `FacebookSDKException` exception on HTTP client error.
-        // Don't catch to allow it to bubble up.
-        $rawResponse = $this->httpClientHandler->send($url, $method, $body, $headers, $timeOut);
+        $psr7Response = $this->httpClient->sendRequest(
+            MessageFactoryDiscovery::find()->createRequest($method, $url, $headers, $body)
+        );
 
         static::$requestCount++;
 
-        $returnResponse = new FacebookResponse(
+        // Prepare headers from associative array to a single string for each header.
+        $responseHeaders = [];
+        foreach ($psr7Response->getHeaders() as $name => $values) {
+            $responseHeaders[] = sprintf('%s: %s', $name, implode(", ", $values));
+        }
+
+        $facebookResponse = new FacebookResponse(
             $request,
-            $rawResponse->getBody(),
-            $rawResponse->getHttpResponseCode(),
-            $rawResponse->getHeaders()
+            $psr7Response->getBody(),
+            $psr7Response->getStatusCode(),
+            $responseHeaders
         );
 
-        if ($returnResponse->isError()) {
-            throw $returnResponse->getThrownException();
+        if ($facebookResponse->isError()) {
+            throw $facebookResponse->getThrownException();
         }
 
-        return $returnResponse;
+        return $facebookResponse;
     }
 
     /**