diff --git a/apps/files_external/3rdparty/composer.json b/apps/files_external/3rdparty/composer.json
index 897234dfce..6c23067c4a 100644
--- a/apps/files_external/3rdparty/composer.json
+++ b/apps/files_external/3rdparty/composer.json
@@ -8,7 +8,7 @@
 		"classmap-authoritative": true
 	},
 	"require": {
-		"icewind/streams": "0.6.1",
+		"icewind/streams": "0.7.1",
 		"icewind/smb": "3.1.1"
 	}
 }
diff --git a/apps/files_external/3rdparty/composer.lock b/apps/files_external/3rdparty/composer.lock
index 69da480d19..491b73fa1f 100644
--- a/apps/files_external/3rdparty/composer.lock
+++ b/apps/files_external/3rdparty/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "dd320be9cd87742d53b4384bf3df9c42",
+    "content-hash": "5639a09feff2318b1b69e11a10a81e7d",
     "packages": [
         {
             "name": "icewind/smb",
@@ -50,16 +50,16 @@
         },
         {
             "name": "icewind/streams",
-            "version": "0.6.1",
+            "version": "v0.7.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/icewind1991/Streams.git",
-                "reference": "0a78597117d8a02937ea05206f219294449fb06e"
+                "reference": "4db3ed6c366e90b958d00e1d4c6360a9b39b2121"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/icewind1991/Streams/zipball/0a78597117d8a02937ea05206f219294449fb06e",
-                "reference": "0a78597117d8a02937ea05206f219294449fb06e",
+                "url": "https://api.github.com/repos/icewind1991/Streams/zipball/4db3ed6c366e90b958d00e1d4c6360a9b39b2121",
+                "reference": "4db3ed6c366e90b958d00e1d4c6360a9b39b2121",
                 "shasum": ""
             },
             "require": {
@@ -87,7 +87,7 @@
                 }
             ],
             "description": "A set of generic stream wrappers",
-            "time": "2018-04-24T09:07:38+00:00"
+            "time": "2019-02-15T12:57:29+00:00"
         }
     ],
     "packages-dev": [],
diff --git a/apps/files_external/3rdparty/composer/installed.json b/apps/files_external/3rdparty/composer/installed.json
index b6c0b4d751..18ee9e5431 100644
--- a/apps/files_external/3rdparty/composer/installed.json
+++ b/apps/files_external/3rdparty/composer/installed.json
@@ -45,17 +45,17 @@
     },
     {
         "name": "icewind/streams",
-        "version": "0.6.1",
-        "version_normalized": "0.6.1.0",
+        "version": "v0.7.1",
+        "version_normalized": "0.7.1.0",
         "source": {
             "type": "git",
             "url": "https://github.com/icewind1991/Streams.git",
-            "reference": "0a78597117d8a02937ea05206f219294449fb06e"
+            "reference": "4db3ed6c366e90b958d00e1d4c6360a9b39b2121"
         },
         "dist": {
             "type": "zip",
-            "url": "https://api.github.com/repos/icewind1991/Streams/zipball/0a78597117d8a02937ea05206f219294449fb06e",
-            "reference": "0a78597117d8a02937ea05206f219294449fb06e",
+            "url": "https://api.github.com/repos/icewind1991/Streams/zipball/4db3ed6c366e90b958d00e1d4c6360a9b39b2121",
+            "reference": "4db3ed6c366e90b958d00e1d4c6360a9b39b2121",
             "shasum": ""
         },
         "require": {
@@ -65,7 +65,7 @@
             "phpunit/phpunit": "^4.8",
             "satooshi/php-coveralls": "v1.0.0"
         },
-        "time": "2018-04-24T09:07:38+00:00",
+        "time": "2019-02-15T12:57:29+00:00",
         "type": "library",
         "installation-source": "dist",
         "autoload": {
diff --git a/apps/files_external/3rdparty/icewind/streams/src/CallbackWrapper.php b/apps/files_external/3rdparty/icewind/streams/src/CallbackWrapper.php
index 4eef55681c..67f9110d10 100644
--- a/apps/files_external/3rdparty/icewind/streams/src/CallbackWrapper.php
+++ b/apps/files_external/3rdparty/icewind/streams/src/CallbackWrapper.php
@@ -44,6 +44,11 @@ class CallbackWrapper extends Wrapper {
 	 */
 	protected $readDirCallBack;
 
+	/**
+	 * @var callable
+	 */
+	protected $preCloseCallback;
+
 	/**
 	 * Wraps a stream with the provided callbacks
 	 *
@@ -56,14 +61,15 @@ class CallbackWrapper extends Wrapper {
 	 *
 	 * @throws \BadMethodCallException
 	 */
-	public static function wrap($source, $read = null, $write = null, $close = null, $readDir = null) {
+	public static function wrap($source, $read = null, $write = null, $close = null, $readDir = null, $preClose = null) {
 		$context = stream_context_create(array(
 			'callback' => array(
 				'source' => $source,
 				'read' => $read,
 				'write' => $write,
 				'close' => $close,
-				'readDir' => $readDir
+				'readDir' => $readDir,
+				'preClose' => $preClose,
 			)
 		));
 		return Wrapper::wrapSource($source, $context, 'callback', '\Icewind\Streams\CallbackWrapper');
@@ -76,6 +82,7 @@ class CallbackWrapper extends Wrapper {
 		$this->writeCallback = $context['write'];
 		$this->closeCallback = $context['close'];
 		$this->readDirCallBack = $context['readDir'];
+		$this->preCloseCallback = $context['preClose'];
 		return true;
 	}
 
@@ -90,7 +97,7 @@ class CallbackWrapper extends Wrapper {
 	public function stream_read($count) {
 		$result = parent::stream_read($count);
 		if (is_callable($this->readCallback)) {
-			call_user_func($this->readCallback, $count);
+			call_user_func($this->readCallback, strlen($result));
 		}
 		return $result;
 	}
@@ -104,6 +111,11 @@ class CallbackWrapper extends Wrapper {
 	}
 
 	public function stream_close() {
+		if (is_callable($this->preCloseCallback)) {
+			call_user_func($this->preCloseCallback, $this->loadContext('callback')['source']);
+			// prevent further calls by potential PHP 7 GC ghosts
+			$this->preCloseCallback = null;
+		}
 		$result = parent::stream_close();
 		if (is_callable($this->closeCallback)) {
 			call_user_func($this->closeCallback);