Java client BECN implementation (#155)

Java/Examples/DiscoveryExample/DiscoveryExample.iml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" packagePrefix="gov.nasa.xpc.ex" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module" module-name="XPlaneConnect" />
+  </component>
+</module>

Java/Examples/DiscoveryExample/src/DiscoveryConnectionExample.java

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+package gov.nasa.xpc.ex;
+
+import gov.nasa.xpc.XPlaneConnect;
+import gov.nasa.xpc.discovery.XPlaneConnectDiscovery;
+
+import java.io.IOException;
+import java.net.SocketException;
+
+
+
+public class DiscoveryConnectionExample {
+
+    public static void main(String[] args) throws IOException {
+
+        XPlaneConnectDiscovery discovery = new XPlaneConnectDiscovery();
+        discovery.start(xpc -> {
+             
+            sendDref(xpc);
+        });
+        System.out.println("Example done");
+    }
+
+    static void sendDref(XPlaneConnect xpc) {
+        System.out.println("Sending DREF");
+        try {
+            xpc.getDREF("sim/test/test_float");
+
+        } catch (SocketException e) {
+            System.out.println("Unable to set up the connection. (Error message was '" + e.getMessage() + "'.)");
+        } catch (IOException e) {
+            System.out.println("Something went wrong with one of the commands. (Error message was '" + e.getMessage() + "'.)");
+        }
+        System.out.println("Sending DREF done");
+    }
+}

Java/Examples/DiscoveryExample/src/SimpleDiscoveryExample.java

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+package gov.nasa.xpc.ex;
+
+import gov.nasa.xpc.discovery.XPlaneConnectDiscovery;
+
+import java.io.IOException;
+
+
+/**
+ * XPlaneConnect discovery example that prints continuously each BECN packet
+ */
+public class SimpleDiscoveryExample {
+
+    public static void main(String[] args) throws IOException {
+XPlaneConnectDiscovery discovery = new XPlaneConnectDiscovery();
+discovery.onBeaconReceived(beacon -> {
+    System.out.println("Discovered XPlaneConnect plugin:");
+    System.out.println("Plugin version: " + beacon.getPluginVersion());
+    System.out.println("X-Plane version: " + beacon.getXplaneVersion());
+    System.out.println("Address: " + beacon.getXplaneAddress().getHostAddress() + ":" + beacon.getPluginPort());
+});
+discovery.start();
+    }
+}