Merge branch 'develop' of github.com:eclipse/paho.mqtt.java into develop

Author: Ian Craggs

org.eclipse.paho.mqttv5.client/src/main/java/org/eclipse/paho/mqttv5/client/internal/MqttConnectionState.java

@@ -53,6 +53,9 @@ public void clearConnectionState() {
 
 
 	public Integer getReceiveMaximum() {
+		if (receiveMaximum == null) {
+			return 65535;
+		}
 		return receiveMaximum;
 	}
 

org.eclipse.paho.mqttv5.common/src/main/java/org/eclipse/paho/mqttv5/common/packet/MqttProperties.java

@@ -336,7 +336,7 @@ public byte[] encodeProperties() throws MqttException {
 			// Maximum QoS
 			if (maximumQoS != null && validProperties.contains(MAXIMUM_QOS_IDENTIFIER)) {
 				outputStream.write(MAXIMUM_QOS_IDENTIFIER);
-				outputStream.writeShort(maximumQoS);
+				outputStream.writeByte(maximumQoS);
 			}
 
 			// Retain Available
@@ -476,7 +476,7 @@ public void decodeProperties(DataInputStream dis) throws IOException, MqttExcept
 					} else if (identifier == TOPIC_ALIAS_IDENTIFIER) {
 						topicAlias = (int) inputStream.readShort();
 					} else if (identifier == MAXIMUM_QOS_IDENTIFIER) {
-						maximumQoS = (int) inputStream.readShort();
+						maximumQoS = inputStream.read();
 					} else if (identifier == RETAIN_AVAILABLE_IDENTIFIER) {
 						retainAvailable = inputStream.readBoolean();
 					} else if (identifier == USER_DEFINED_PAIR_IDENTIFIER) {

start-broker.bat

@@ -0,0 +1,11 @@
+@echo off
+rem Simplified Windows version of start-broker.sh
+rem Moquitto broker not supported, only Python Interopability Broker
+echo "Installing and starting Python Interop Broker."
+if not exist "paho.mqtt.testing" (
+	git clone https://github.com/eclipse/paho.mqtt.testing.git
+)
+copy "java_client_testing.conf" "paho.mqtt.testing/interoperability/java_client_testing.conf" /y
+cd paho.mqtt.testing/interoperability
+start python3 startbroker.py -c java_client_testing.conf
+cd ../..