javadoc

examples/src/UdpExamples/MulticastUdpReceiver.java

@@ -8,7 +8,12 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- * Looks a lot like UdpReceiver. Start this before launching MulticastSender.
+ * Send preformatted test packets on a UDP multicast group.
+ * The source looks a lot like UnicastUdpReceiver.  Start this before launching MulticastUdpSender.
+ * Multicast must be enabled for the (wired or wireless) LAN that the system is connected too.
+ * Note that these paired programs can communicate within a remote LAN (such as a wireless 
+ * home network) even if one or both machines are connected via a 
+ * <a href="https://en.wikipedia.org/wiki/Virtual_private_network" target="_blank">Virtual Private Network (VPN)</a>.
  *
  * @author mcgredo
  * @author brutzman@nps.edu

examples/src/UdpExamples/MulticastUdpSender.java

@@ -7,7 +7,12 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- * Looks a lot like UdpSender.  Start this after launching MulticastReceiver.
+ * Send preformatted test packets on a UDP multicast group.
+ * The source looks a lot like UnicastUdpSender.  Start this after launching MulticastUdpReceiver.
+ * Multicast must be enabled for the (wired or wireless) LAN that the system is connected too.
+ * Note that these paired programs can communicate within a remote LAN (such as a wireless 
+ * home network) even if one or both machines are connected via a 
+ * <a href="https://en.wikipedia.org/wiki/Virtual_private_network" target="_blank">Virtual Private Network (VPN)</a>.
  * 
  * Privacy note: this sender advertises your user name as part of the multicast packet message
  *