Refined egress diagnostics (#56)

Author: pgalbraith

src/main/java/test/EgressDiagnostics.java

@@ -4,24 +4,42 @@
 
 public class EgressDiagnostics {
     public static void main(String[] args) throws SocketException {
-        System.out.println(System.getProperties());
+        showProperty("java.version");
+        showProperty("java.version.date");
+        showProperty("java.runtime.name");
+        showProperty("java.runtime.version");
+        showProperty("java.vendor");
+        showProperty("java.vendor.url");
+        showProperty("java.vendor.url.bug");
+        showProperty("java.vendor.version");
+        showProperty("java.vm.name");
+        showProperty("java.vm.vendor");
+        showProperty("java.vm.version");
+        showProperty("os.arch");
+        showProperty("os.name");
+        showProperty("os.version");
         tryRemote(new InetSocketAddress("a.root-servers.net", 0));
         tryRemote(new InetSocketAddress("a.root-servers.net", 53));
         tryRemote(new InetSocketAddress("1.1.1.1", 0));
         tryRemote(new InetSocketAddress("1::1", 0));
     }
 
+    public static void showProperty(String key) {
+        System.out.println(key + ": " + System.getProperty(key));
+    }
+
     public static void tryRemote(InetSocketAddress remote) {
         DatagramSocket socket = null;
         try {
             System.out.println("\nremote: " + remote);
+            System.out.println("reachable: " + remote.getAddress().isReachable(3000));
             socket = new DatagramSocket();
             socket.connect(remote);
             InetAddress local = socket.getLocalAddress();
             System.out.println("local: " + local);
             NetworkInterface ni = NetworkInterface.getByInetAddress(local);
             System.out.println("interface: " + ni);
-            System.out.println("hardware: " + ni.getHardwareAddress());
+            System.out.println("hardware: " + (ni == null ? null : ni.getHardwareAddress().toString().substring(3)));
         } catch (Throwable t) {
             System.out.println(t);
             t.printStackTrace();