Fixed issue #38, autoboxing of a nullable Integer given a default to 0 assignment

tools_scripts/integration/issue38_pubsubQos2.groovy

@@ -0,0 +1,53 @@
+@Grab(group='org.fusesource.mqtt-client', module='mqtt-client', version='1.10')
+
+import org.fusesource.mqtt.client.BlockingConnection
+import org.fusesource.mqtt.client.MQTT
+import org.fusesource.mqtt.client.Message
+import org.fusesource.mqtt.client.QoS
+import org.fusesource.mqtt.client.Topic
+
+String host = args.size() == 1 ? args[0] : "localhost"
+
+MQTT mqttSub = new MQTT()
+mqttSub.setHost(host, 1883)
+mqttSub.setClientId("Subscriber(A)")
+mqttSub.cleanSession = false
+//AT_MOST_ONCE,
+//AT_LEAST_ONCE,
+//EXACTLY_ONCE
+BlockingConnection clientSub = mqttSub.blockingConnection()
+clientSub.connect()
+println "Sub connected"
+Topic[] topics = [new Topic("/sys/abc", QoS.AT_MOST_ONCE)]
+byte[] qoses = clientSub.subscribe(topics)
+println "Sub subscribed"
+clientSub.disconnect()
+clientSub.kill()
+println "Sub disconnected"
+
+
+MQTT mqttPub = new MQTT()
+mqttPub.setHost(host, 1883)
+mqttPub.setClientId("Publisher(B)")
+mqttPub.cleanSession = false
+BlockingConnection clientPub = mqttPub.blockingConnection()
+clientPub.connect()
+println "Pub connected"
+clientPub.publish("/sys/abc", "A message published".bytes, QoS.EXACTLY_ONCE, false)
+println "Pub published"
+
+println "Sub reconnects"
+mqttSub = new MQTT()
+mqttSub.setHost(host, 1883)
+mqttSub.setClientId("Subscriber(A)")
+mqttSub.cleanSession = false
+clientSub = mqttSub.blockingConnection()
+clientSub.connect()
+println "Sub connected..and try to receive the message"
+Message msg = clientSub.receive()
+println "Sub received message \n\t Topic: ${msg.topic}, payload: ${new String(msg.payload)}"
+msg.ack()
+clientSub.disconnect() //or kill
+clientPub.disconnect()
+
+println "Finished!!\n\n"