Upgrade to binsoul/net-mqtt version 0.7

Author: binsoul

composer.json

@@ -18,7 +18,7 @@
     ],
     "require": {
         "php": "^7.2",
-        "binsoul/net-mqtt": "^0.6",
+        "binsoul/net-mqtt": "^0.7",
         "evenement/evenement": "^3",
         "react/event-loop": "^1.1",
         "react/promise": "^2.7",

src/ReactMqttClient.php

@@ -325,7 +325,17 @@ public function unsubscribe(Subscription $subscription): ExtendedPromiseInterfac
             return new RejectedPromise(new LogicException('The client is not connected.'));
         }
 
-        return $this->startFlow($this->flowFactory->buildOutgoingUnsubscribeFlow([$subscription]));
+        $deferred = new Deferred();
+
+        $this->startFlow($this->flowFactory->buildOutgoingUnsubscribeFlow([$subscription]))
+            ->then(static function (array $subscriptions) use ($deferred) {
+                $deferred->resolve(array_shift($subscriptions));
+            })
+            ->otherwise(static function ($exception) use ($deferred) {
+                $deferred->reject($exception);
+            });
+
+        return $deferred->promise();
     }
 
     /**