From e0196b370e8da38d366d327da57186dd3a44c2b2 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Sat, 16 Nov 2024 10:39:06 -0500
Subject: reliable multicast: periodically send acks

---
 src/main/java/derms/net/rmulticast/HeartbeatMessage.java | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 src/main/java/derms/net/rmulticast/HeartbeatMessage.java

(limited to 'src/main/java/derms/net/rmulticast/HeartbeatMessage.java')

diff --git a/src/main/java/derms/net/rmulticast/HeartbeatMessage.java b/src/main/java/derms/net/rmulticast/HeartbeatMessage.java
new file mode 100644
index 0000000..a5a3c61
--- /dev/null
+++ b/src/main/java/derms/net/rmulticast/HeartbeatMessage.java
@@ -0,0 +1,10 @@
+package derms.net.rmulticast;
+
+import java.net.InetAddress;
+
+/** A message whose only purpose is to propagate acknowledgements and process IDs to the group. */
+class HeartbeatMessage extends Message<NullPayload> {
+    HeartbeatMessage(InetAddress sender, MessageID[] acks, MessageID[] nacks) {
+        super(new NullPayload(), sender, acks, nacks);
+    }
+}
-- 
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