diff --git a/composer.json b/composer.json
index 208eba33..9d235531 100644
--- a/composer.json
+++ b/composer.json
@@ -11,10 +11,11 @@
   ],
   "require": {
     "php": ">=5.4.0",
+    "evenement/evenement": "^3.0 || ^2.0",
     "react/event-loop": "^0.4",
     "react/promise": "~2.2",
-    "react/stream": "^0.4",
-    "evenement/evenement": "~2.0",
+    "react/promise-stream": "^1.1",
+    "react/stream": "^1.0 || ^0.7 || ^0.6 || ^0.5 || ^0.4",
     "wyrihaximus/react-child-process-pool": "^1.3"
   },
   "require-dev": {
diff --git a/composer.lock b/composer.lock
index 53150a9e..42335dcd 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,48 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "c528845419488f6c171310278b549ad9",
+    "content-hash": "68b67172371217fc2a6dc42267f5d4c1",
     "packages": [
+        {
+            "name": "cakephp/utility",
+            "version": "3.4.7",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/cakephp/utility.git",
+                "reference": "f194ce6c83f54d96ce8ae0020b5f58fa850a8ef4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/cakephp/utility/zipball/f194ce6c83f54d96ce8ae0020b5f58fa850a8ef4",
+                "reference": "f194ce6c83f54d96ce8ae0020b5f58fa850a8ef4",
+                "shasum": ""
+            },
+            "suggest": {
+                "ext-intl": "To use Text::transliterate() or Text::slug()",
+                "lib-ICU": "To use Text::transliterate() or Text::slug()"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Cake\\Utility\\": "."
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "CakePHP Community",
+                    "homepage": "https://cakephp.org"
+                }
+            ],
+            "description": "CakePHP Utility classes such as Inflector, String, Hash, and Security",
+            "time": "2017-04-18T04:05:20+00:00"
+        },
         {
             "name": "doctrine/inflector",
             "version": "v1.1.0",
@@ -73,23 +113,80 @@
             ],
             "time": "2015-11-06T14:35:42+00:00"
         },
+        {
+            "name": "doctrine/instantiator",
+            "version": "1.0.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/instantiator.git",
+                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/8e884e78f9f0eb1329e445619e04456e64d8051d",
+                "reference": "8e884e78f9f0eb1329e445619e04456e64d8051d",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3,<8.0-DEV"
+            },
+            "require-dev": {
+                "athletic/athletic": "~0.1.8",
+                "ext-pdo": "*",
+                "ext-phar": "*",
+                "phpunit/phpunit": "~4.0",
+                "squizlabs/php_codesniffer": "~2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Doctrine\\Instantiator\\": "src/Doctrine/Instantiator/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Marco Pivetta",
+                    "email": "ocramius@gmail.com",
+                    "homepage": "http://ocramius.github.com/"
+                }
+            ],
+            "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
+            "homepage": "https://github.com/doctrine/instantiator",
+            "keywords": [
+                "constructor",
+                "instantiate"
+            ],
+            "time": "2015-06-14T21:17:01+00:00"
+        },
         {
             "name": "evenement/evenement",
-            "version": "v2.0.0",
+            "version": "v2.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/igorw/evenement.git",
-                "reference": "f6e843799fd4f4184d54d8fc7b5b3551c9fa803e"
+                "reference": "6ba9a777870ab49f417e703229d53931ed40fd7a"
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-                "reference": "f6e843799fd4f4184d54d8fc7b5b3551c9fa803e",
+                "url": "https://api.github.com/repos/igorw/evenement/zipball/6ba9a777870ab49f417e703229d53931ed40fd7a",
+                "reference": "6ba9a777870ab49f417e703229d53931ed40fd7a",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.4.0"
             },
+            "require-dev": {
+                "phpunit/phpunit": "^6.0||^5.7||^4.8.35"
+            },
             "type": "library",
             "extra": {
                 "branch-alias": {
@@ -108,8 +205,7 @@
             "authors": [
                 {
                     "name": "Igor Wiedler",
-                    "email": "igor@wiedler.ch",
-                    "homepage": "http://wiedler.ch/igor/"
+                    "email": "igor@wiedler.ch"
                 }
             ],
             "description": "Événement is a very simple event dispatching library for PHP",
@@ -117,7 +213,7 @@
                 "event-dispatcher",
                 "event-emitter"
             ],
-            "time": "2012-11-02T14:49:47+00:00"
+            "time": "2017-07-17T17:39:19+00:00"
         },
         {
             "name": "indigophp/hash-compat",
@@ -170,28 +266,117 @@
             ],
             "time": "2015-08-22T07:03:35+00:00"
         },
+        {
+            "name": "paragonie/random_compat",
+            "version": "v2.0.11",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/random_compat.git",
+                "reference": "5da4d3c796c275c55f057af5a643ae297d96b4d8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/5da4d3c796c275c55f057af5a643ae297d96b4d8",
+                "reference": "5da4d3c796c275c55f057af5a643ae297d96b4d8",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.2.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "lib/random.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "pseudorandom",
+                "random"
+            ],
+            "time": "2017-09-27T21:40:39+00:00"
+        },
+        {
+            "name": "react/cache",
+            "version": "v0.4.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/reactphp/cache.git",
+                "reference": "75494f26b4ef089db9bf8c90b63c296246e099e8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/reactphp/cache/zipball/75494f26b4ef089db9bf8c90b63c296246e099e8",
+                "reference": "75494f26b4ef089db9bf8c90b63c296246e099e8",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0",
+                "react/promise": "~2.0|~1.1"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "React\\Cache\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Async, Promise-based cache interface for ReactPHP",
+            "keywords": [
+                "cache",
+                "caching",
+                "promise",
+                "reactphp"
+            ],
+            "time": "2017-12-20T16:47:13+00:00"
+        },
         {
             "name": "react/child-process",
-            "version": "v0.4.1",
+            "version": "v0.5.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/reactphp/child-process.git",
-                "reference": "3ab4f83c6f6c5862f7ca28d999a92d327472a671"
+                "reference": "aae49d7f1340bafb695b9af3ce4421ea41a39620"
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-                "url": "https://api.github.com/repos/reactphp/child-process/zipball/3ab4f83c6f6c5862f7ca28d999a92d327472a671",
-                "reference": "3ab4f83c6f6c5862f7ca28d999a92d327472a671",
+                "url": "https://api.github.com/repos/reactphp/child-process/zipball/aae49d7f1340bafb695b9af3ce4421ea41a39620",
+                "reference": "aae49d7f1340bafb695b9af3ce4421ea41a39620",
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-                "evenement/evenement": "~2.0",
-                "php": ">=5.4.0",
-                "react/event-loop": "0.4.*",
-                "react/stream": "~0.4.2"
+                "evenement/evenement": "^3.0 || ^2.0 || ^1.0",
+                "php": ">=5.3.0",
+                "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3.5",
+                "react/stream": "^1.0 || ^0.7.6"
             },
             "require-dev": {
-                "sebastian/environment": "~1.0"
+                "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35",
+                "sebastian/environment": "^3.0 || ^2.0 || ^1.0"
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             "type": "library",
             "autoload": {
@@ -203,40 +388,85 @@
             "license": [
                 "MIT"
             ],
-            "description": "Library for executing child processes.",
+            "description": "Event-driven library for executing child processes with ReactPHP.",
             "keywords": [
-                "process"
+                "event-driven",
+                "process",
+                "reactphp"
             ],
-            "time": "2016-08-01T18:09:48+00:00"
+            "time": "2018-01-18T14:53:06+00:00"
+        },
+        {
+            "name": "react/dns",
+            "version": "v0.4.13",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/reactphp/dns.git",
+                "reference": "7d1e08c300fd7de600810883386ee5e2a64898f4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/reactphp/dns/zipball/7d1e08c300fd7de600810883386ee5e2a64898f4",
+                "reference": "7d1e08c300fd7de600810883386ee5e2a64898f4",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0",
+                "react/cache": "~0.4.0|~0.3.0",
+                "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3.5",
+                "react/promise": "^2.1 || ^1.2.1",
+                "react/promise-timer": "^1.2",
+                "react/stream": "^1.0 || ^0.7 || ^0.6 || ^0.5 || ^0.4.5"
+            },
+            "require-dev": {
+                "clue/block-react": "^1.2",
+                "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "React\\Dns\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Async DNS resolver for ReactPHP",
+            "keywords": [
+                "async",
+                "dns",
+                "dns-resolver",
+                "reactphp"
+            ],
+            "time": "2018-02-27T12:51:22+00:00"
         },
         {
             "name": "react/event-loop",
-            "version": "v0.4.2",
+            "version": "v0.4.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/reactphp/event-loop.git",
-                "reference": "164799f73175e1c80bba92a220ea35df6ca371dd"
+                "reference": "8bde03488ee897dc6bb3d91e4e17c353f9c5252f"
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-                "reference": "164799f73175e1c80bba92a220ea35df6ca371dd",
+                "url": "https://api.github.com/repos/reactphp/event-loop/zipball/8bde03488ee897dc6bb3d91e4e17c353f9c5252f",
+                "reference": "8bde03488ee897dc6bb3d91e4e17c353f9c5252f",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.4.0"
             },
+            "require-dev": {
+                "phpunit/phpunit": "~4.8"
+            },
             "suggest": {
                 "ext-event": "~1.0",
                 "ext-libev": "*",
                 "ext-libevent": ">=0.1.0"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "0.5-dev"
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                 "psr-4": {
                     "React\\EventLoop\\": "src"
@@ -251,25 +481,28 @@
                 "asynchronous",
                 "event-loop"
             ],
-            "time": "2016-03-08T02:09:32+00:00"
+            "time": "2017-04-27T10:56:23+00:00"
         },
         {
             "name": "react/promise",
-            "version": "v2.5.0",
+            "version": "v2.5.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/reactphp/promise.git",
-                "reference": "2760f3898b7e931aa71153852dcd48a75c9b95db"
+                "reference": "62785ae604c8d69725d693eb370e1d67e94c4053"
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-                "url": "https://api.github.com/repos/reactphp/promise/zipball/2760f3898b7e931aa71153852dcd48a75c9b95db",
-                "reference": "2760f3898b7e931aa71153852dcd48a75c9b95db",
+                "url": "https://api.github.com/repos/reactphp/promise/zipball/62785ae604c8d69725d693eb370e1d67e94c4053",
+                "reference": "62785ae604c8d69725d693eb370e1d67e94c4053",
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             "require": {
                 "php": ">=5.4.0"
             },
+            "require-dev": {
+                "phpunit/phpunit": "~4.8"
+            },
             "type": "library",
             "autoload": {
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@@ -294,34 +527,186 @@
                 "promise",
                 "promises"
             ],
-            "time": "2016-12-22T14:09:01+00:00"
+            "time": "2017-03-25T12:08:31+00:00"
+        },
+        {
+            "name": "react/promise-stream",
+            "version": "v1.1.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/reactphp/promise-stream.git",
+                "reference": "00e269d611e9c9a29356aef64c07f7e513e73dc9"
+            },
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+                "shasum": ""
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+                "php": ">=5.3",
+                "react/promise": "^2.1 || ^1.2",
+                "react/stream": "^1.0 || ^0.7 || ^0.6 || ^0.5 || ^0.4 || ^0.3"
+            },
+            "require-dev": {
+                "clue/block-react": "^1.0",
+                "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35",
+                "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3",
+                "react/promise-timer": "^1.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "React\\Promise\\Stream\\": "src/"
+                },
+                "files": [
+                    "src/functions_include.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
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+                    "name": "Christian Lück",
+                    "email": "christian@lueck.tv"
+                }
+            ],
+            "description": "The missing link between Promise-land and Stream-land for ReactPHP",
+            "homepage": "https://github.com/reactphp/promise-stream",
+            "keywords": [
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+                "async",
+                "promise",
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+            "time": "2017-12-22T12:02:05+00:00"
+        },
+        {
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+            "version": "v1.2.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/reactphp/promise-timer.git",
+                "reference": "9b4cd9cbe7457e0d87fe8aa7ccceab8a2c830fbd"
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+            "dist": {
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+                "react/promise": "~2.1|~1.2"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "React\\Promise\\Timer\\": "src/"
+                },
+                "files": [
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
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+                    "email": "christian@lueck.tv"
+                }
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+            "description": "A trivial implementation of timeouts for Promises, built on top of ReactPHP.",
+            "homepage": "https://github.com/react/promise-timer",
+            "keywords": [
+                "async",
+                "event-loop",
+                "promise",
+                "reactphp",
+                "timeout",
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+            "time": "2017-12-22T15:41:41+00:00"
+        },
+        {
+            "name": "react/socket",
+            "version": "v0.8.10",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/reactphp/socket.git",
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+            "require": {
+                "evenement/evenement": "^3.0 || ^2.0 || ^1.0",
+                "php": ">=5.3.0",
+                "react/dns": "^0.4.13",
+                "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3.5",
+                "react/promise": "^2.1 || ^1.2",
+                "react/promise-timer": "~1.0",
+                "react/stream": "^1.0 || ^0.7.1"
+            },
+            "require-dev": {
+                "clue/block-react": "^1.2",
+                "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "React\\Socket\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Async, streaming plaintext TCP/IP and secure TLS socket server and client connections for ReactPHP",
+            "keywords": [
+                "Connection",
+                "Socket",
+                "async",
+                "reactphp",
+                "stream"
+            ],
+            "time": "2018-02-28T09:32:38+00:00"
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+                "reference": "730b01bc3e867237eaac355e06a36b85dd93a8b4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/3cc8f69b3028d0f96a9078e6295d86e9bf019be5",
-                "reference": "3cc8f69b3028d0f96a9078e6295d86e9bf019be5",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/730b01bc3e867237eaac355e06a36b85dd93a8b4",
+                "reference": "730b01bc3e867237eaac355e06a36b85dd93a8b4",
                 "shasum": ""
             },
             "require": {
@@ -951,7 +1348,7 @@
                 "filesystem",
                 "iterator"
             ],
-            "time": "2016-10-03T07:40:28+00:00"
+            "time": "2017-11-27T13:52:08+00:00"
         },
         {
             "name": "phpunit/php-text-template",
@@ -1045,16 +1442,16 @@
         },
         {
             "name": "phpunit/php-token-stream",
-            "version": "1.4.10",
+            "version": "1.4.12",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-token-stream.git",
-                "reference": "284fb0679dd25fb5ffb56dad92c72860c0a22f1b"
+                "reference": "1ce90ba27c42e4e44e6d8458241466380b51fa16"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-token-stream/zipball/284fb0679dd25fb5ffb56dad92c72860c0a22f1b",
-                "reference": "284fb0679dd25fb5ffb56dad92c72860c0a22f1b",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-token-stream/zipball/1ce90ba27c42e4e44e6d8458241466380b51fa16",
+                "reference": "1ce90ba27c42e4e44e6d8458241466380b51fa16",
                 "shasum": ""
             },
             "require": {
@@ -1090,20 +1487,20 @@
             "keywords": [
                 "tokenizer"
             ],
-            "time": "2017-02-23T06:14:45+00:00"
+            "time": "2017-12-04T08:55:13+00:00"
         },
         {
             "name": "phpunit/phpunit",
-            "version": "4.8.35",
+            "version": "4.8.36",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "791b1a67c25af50e230f841ee7a9c6eba507dc87"
+                "reference": "46023de9a91eec7dfb06cc56cb4e260017298517"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/791b1a67c25af50e230f841ee7a9c6eba507dc87",
-                "reference": "791b1a67c25af50e230f841ee7a9c6eba507dc87",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/46023de9a91eec7dfb06cc56cb4e260017298517",
+                "reference": "46023de9a91eec7dfb06cc56cb4e260017298517",
                 "shasum": ""
             },
             "require": {
@@ -1162,7 +1559,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2017-02-06T05:18:07+00:00"
+            "time": "2017-06-21T08:07:12+00:00"
         },
         {
             "name": "phpunit/phpunit-mock-objects",
@@ -1220,56 +1617,6 @@
             ],
             "time": "2015-10-02T06:51:40+00:00"
         },
-        {
-            "name": "react/promise-timer",
-            "version": "v1.1.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/reactphp/promise-timer.git",
-                "reference": "ddedc67bfd7f579fc83e66ff67e3564b179297dd"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/reactphp/promise-timer/zipball/ddedc67bfd7f579fc83e66ff67e3564b179297dd",
-                "reference": "ddedc67bfd7f579fc83e66ff67e3564b179297dd",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3",
-                "react/event-loop": "~0.4.0|~0.3.0",
-                "react/promise": "~2.1|~1.2"
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "React\\Promise\\Timer\\": "src/"
-                },
-                "files": [
-                    "src/functions.php"
-                ]
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Christian Lück",
-                    "email": "christian@lueck.tv"
-                }
-            ],
-            "description": "Trivial timeout implementation for Promises",
-            "homepage": "https://github.com/react/promise-timer",
-            "keywords": [
-                "async",
-                "event-loop",
-                "promise",
-                "reactphp",
-                "timeout",
-                "timer"
-            ],
-            "time": "2016-12-27T08:12:19+00:00"
-        },
         {
             "name": "sebastian/comparator",
             "version": "1.2.4",
@@ -1336,23 +1683,23 @@
         },
         {
             "name": "sebastian/diff",
-            "version": "1.4.1",
+            "version": "1.4.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/diff.git",
-                "reference": "13edfd8706462032c2f52b4b862974dd46b71c9e"
+                "reference": "7f066a26a962dbe58ddea9f72a4e82874a3975a4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/diff/zipball/13edfd8706462032c2f52b4b862974dd46b71c9e",
-                "reference": "13edfd8706462032c2f52b4b862974dd46b71c9e",
+                "url": "https://api.github.com/repos/sebastianbergmann/diff/zipball/7f066a26a962dbe58ddea9f72a4e82874a3975a4",
+                "reference": "7f066a26a962dbe58ddea9f72a4e82874a3975a4",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "php": "^5.3.3 || ^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.8"
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.0"
             },
             "type": "library",
             "extra": {
@@ -1384,7 +1731,7 @@
             "keywords": [
                 "diff"
             ],
-            "time": "2015-12-08T07:14:41+00:00"
+            "time": "2017-05-22T07:24:03+00:00"
         },
         {
             "name": "sebastian/environment",
@@ -1556,16 +1903,16 @@
         },
         {
             "name": "sebastian/recursion-context",
-            "version": "1.0.2",
+            "version": "1.0.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/recursion-context.git",
-                "reference": "913401df809e99e4f47b27cdd781f4a258d58791"
+                "reference": "b19cc3298482a335a95f3016d2f8a6950f0fbcd7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/913401df809e99e4f47b27cdd781f4a258d58791",
-                "reference": "913401df809e99e4f47b27cdd781f4a258d58791",
+                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/b19cc3298482a335a95f3016d2f8a6950f0fbcd7",
+                "reference": "b19cc3298482a335a95f3016d2f8a6950f0fbcd7",
                 "shasum": ""
             },
             "require": {
@@ -1605,7 +1952,7 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
-            "time": "2015-11-11T19:50:13+00:00"
+            "time": "2016-10-03T07:41:43+00:00"
         },
         {
             "name": "sebastian/version",
@@ -1644,16 +1991,16 @@
         },
         {
             "name": "symfony/yaml",
-            "version": "v2.8.17",
+            "version": "v2.8.36",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/yaml.git",
-                "reference": "322a8c2dfbca15ad6b1b27e182899f98ec0e0153"
+                "reference": "be720fcfae4614df204190d57795351059946a77"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/322a8c2dfbca15ad6b1b27e182899f98ec0e0153",
-                "reference": "322a8c2dfbca15ad6b1b27e182899f98ec0e0153",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/be720fcfae4614df204190d57795351059946a77",
+                "reference": "be720fcfae4614df204190d57795351059946a77",
                 "shasum": ""
             },
             "require": {
@@ -1689,7 +2036,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2017-01-21T16:40:50+00:00"
+            "time": "2018-01-03T07:36:31+00:00"
         }
     ],
     "aliases": [],
diff --git a/src/Node/File.php b/src/Node/File.php
index c67c1bad..f99c0eab 100644
--- a/src/Node/File.php
+++ b/src/Node/File.php
@@ -8,11 +8,11 @@
 use React\Filesystem\ObjectStreamSink;
 use React\Filesystem\Stream\GenericStreamInterface;
 use React\Promise\Deferred;
+use React\Promise\Stream;
 use React\Stream\ReadableStreamInterface;
 use React\Stream\WritableStreamInterface;
 use React\Promise\FulfilledPromise;
 use React\Promise\RejectedPromise;
-use React\Stream\BufferedSink;
 
 class File implements FileInterface
 {
@@ -149,7 +149,7 @@ public function close()
     public function getContents()
     {
         return $this->open('r')->then(function ($stream) {
-            return BufferedSink::createPromise($stream)->always(function () {
+            return Stream\buffer($stream)->always(function () {
                 $this->close();
             });
         });