new appraoch

pancake/system/vendor/php-http/discovery/src/StreamFactoryDiscovery.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Http\Discovery;
+
+use Http\Discovery\Exception\DiscoveryFailedException;
+use Http\Message\StreamFactory;
+
+/**
+ * Finds a Stream Factory.
+ *
+ * @author Михаил Красильников <m.krasilnikov@yandex.ru>
+ *
+ * @deprecated This will be removed in 2.0. Consider using Psr17FactoryDiscovery.
+ */
+final class StreamFactoryDiscovery extends ClassDiscovery
+{
+    /**
+     * Finds a Stream Factory.
+     *
+     * @return StreamFactory
+     *
+     * @throws Exception\NotFoundException
+     */
+    public static function find()
+    {
+        try {
+            $streamFactory = static::findOneByType(StreamFactory::class);
+        } catch (DiscoveryFailedException $e) {
+            throw new NotFoundException('No stream factories found. To use Guzzle, Diactoros or Slim Framework factories install php-http/message and the chosen message implementation.', 0, $e);
+        }
+
+        return static::instantiateClass($streamFactory);
+    }
+}