From b767b34d97fdacd891702b041cc5eb1fdcb0b0a3 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Fri, 15 Nov 2024 12:16:53 -0500
Subject: reliable multicast: record addresses of group members

---
 src/main/java/derms/net/rmulticast/Receive.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

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

diff --git a/src/main/java/derms/net/rmulticast/Receive.java b/src/main/java/derms/net/rmulticast/Receive.java
index f0d1909..996e0db 100644
--- a/src/main/java/derms/net/rmulticast/Receive.java
+++ b/src/main/java/derms/net/rmulticast/Receive.java
@@ -6,6 +6,7 @@ import derms.net.Packet;
 import java.io.IOException;
 import java.io.Serializable;
 import java.net.DatagramPacket;
+import java.net.InetAddress;
 import java.util.Set;
 import java.util.concurrent.BlockingQueue;
 import java.util.logging.Logger;
@@ -18,15 +19,17 @@ class Receive<T extends Serializable & Hashable> implements Runnable {
     private final Set<MessageID> negativeAcks;
     private final ReceivedSet<T> received;
     private final BlockingQueue<Message<T>> retransmissions;
+    private final Set<InetAddress> groupMembers;
     private final BlockingQueue<Message<T>> delivered;
     private final Logger log;
 
-    Receive(ConcurrentMulticastSocket inSock, Set<MessageID> positiveAcks, Set<MessageID> negativeAcks, BlockingQueue<Message<T>> retransmissions, BlockingQueue<Message<T>> delivered) {
+    Receive(ConcurrentMulticastSocket inSock, Set<MessageID> positiveAcks, Set<MessageID> negativeAcks, BlockingQueue<Message<T>> retransmissions, Set<InetAddress> groupMembers, BlockingQueue<Message<T>> delivered) {
         this.inSock = inSock;
         this.positiveAcks = positiveAcks;
         this.negativeAcks = negativeAcks;
         this.received = new ReceivedSet<T>();
         this.retransmissions = retransmissions;
+        this.groupMembers = groupMembers;
         this.delivered = delivered;
         this.log = Logger.getLogger(this.getClass().getName());
     }
@@ -51,6 +54,8 @@ class Receive<T extends Serializable & Hashable> implements Runnable {
         received.add(msg);
         delivered.add(msg);
 
+        groupMembers.add(msg.sender);
+
         negativeAcks.remove(msg.id());
         retransmissions.remove(msg);
 
-- 
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