Support React v0.4 (while preserving BC)

Author: clue

composer.json

@@ -14,9 +14,10 @@
         "psr-4": {"Datagram\\": "src"}
     },
     "require": {
-        "evenement/evenement": "1.*",
-        "react/event-loop": ">=0.2, <0.4",
-        "react/dns": ">=0.2, <0.4",
-        "react/promise": "1.*"
+        "php": ">=5.3",
+        "evenement/evenement": "~1.0|~2.0",
+        "react/event-loop": ">=0.2, <0.5",
+        "react/dns": ">=0.2, <0.5",
+        "react/promise": "~1.0|~2.0"
     }
 }

composer.lock

@@ -4,7 +4,7 @@
 
 use React\EventLoop\LoopInterface;
 use React\Dns\Resolver\Resolver;
-use React\Promise\When;
+use React\Promise\Deferred;
 use Datagram\Socket;
 use \Exception;
 
@@ -65,7 +65,10 @@ protected function resolveAddress($address)
         $parts = parse_url($address);
 
         if (!$parts || !isset($parts['host'])) {
-            return When::resolve($address);
+            $deferred = new Deferred();
+            $deferred->resolve($address);
+
+            return $deferred->promise();
         }
 
         if ($nullport) {
@@ -97,16 +100,26 @@ protected function resolveHost($host)
     {
         // there's no need to resolve if the host is already given as an IP address
         if (false !== filter_var($host, FILTER_VALIDATE_IP)) {
-            return When::resolve($host);
+            $deferred = new Deferred();
+            $deferred->resolve($host);
+
+            return $deferred->promise();
         }
         // todo: remove this once the dns resolver can handle the hosts file!
         if ($host === 'localhost') {
-            return When::resolve('127.0.0.1');
+            $deferred = new Deferred();
+            $deferred->resolve('127.0.0.1');
+
+            return $deferred->promise();
         }
 
         if ($this->resolver === null) {
-            return When::reject(new Exception('No resolver given in order to get IP address for given hostname'));
+            $deferred = new Deferred();
+            $deferred->reject(new Exception('No resolver given in order to get IP address for given hostname'));
+
+            return $deferred->promise();
         }
+
         return $this->resolver->resolve($host);
     }
 }