Added test scripts to check issue4, but issue4 is not reproducible

tools_scripts/issue4_publish2Subscribers.groovy

@@ -0,0 +1,42 @@
+@Grab(group='org.fusesource.mqtt-client', module='mqtt-client', version='1.5')
+
+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[0]
+MQTT mqtt = new MQTT()
+mqtt.setHost(host, 1883)
+mqtt.setCleanSession(true)
+mqtt.setClientId("SubscriberClient")
+
+BlockingConnection subscriber = mqtt.blockingConnection()
+subscriber.connect()
+println "Connected to ${host}"
+
+Topic[] topics = [new Topic("/topic", QoS.AT_MOST_ONCE)]
+byte[] qoses = subscriber.subscribe(topics)
+println "Subscribed to ${topics}"
+
+//start a publisher
+MQTT mqtt2 = new MQTT()
+mqtt2.setHost(host, 1883)
+BlockingConnection publisher = mqtt2.blockingConnection()
+publisher.connect()
+publisher.publish("/topic", 'Hello world!!'.bytes, QoS.AT_MOST_ONCE, false)
+
+//check subscriber received
+Message message = subscriber.receive()
+assert "/topic" == message.topic
+assert "Hello world!!" == new String(message.payload)
+message.ack()
+
+println "shutdown subscriber"
+subscriber.disconnect()
+
+println "shutdown publisher"
+publisher.disconnect()
+
+println "Kill your broker and start it again, then trivialPublish.groovy"

tools_scripts/trivialPublish.groovy

@@ -0,0 +1,22 @@
+@Grab(group='org.fusesource.mqtt-client', module='mqtt-client', version='1.5')
+
+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[0]
+//start a publisher
+MQTT mqtt2 = new MQTT()
+mqtt2.setHost(host, 1883)
+BlockingConnection publisher = mqtt2.blockingConnection()
+publisher.connect()
+println "publisher connected"
+
+publisher.publish("/topic", 'Hello world again!!'.bytes, QoS.AT_MOST_ONCE, false)
+println "publisher published"
+
+println "shutdown publisher"
+publisher.disconnect()