From d382483f0f0736dcc532c8b80fbc122ad615a67b Mon Sep 17 00:00:00 2001
From: firealarmss <ko4uyj@gmail.com>
Date: Sat, 27 Jul 2024 13:36:36 -0500
Subject: [PATCH] Add support to send GRP UNAFFIL network announcement

---
 Constants.cs |  1 +
 FnePeer.cs   | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/Constants.cs b/Constants.cs
index 57bdffa..ad0d79d 100644
--- a/Constants.cs
+++ b/Constants.cs
@@ -184,6 +184,7 @@ namespace fnecore
         public const byte NET_ANNC_SUBFUNC_GRP_AFFIL = 0x00;                    // Announce Group Affiliation
         public const byte NET_ANNC_SUBFUNC_UNIT_REG = 0x01;                     // Announce Unit Registration
         public const byte NET_ANNC_SUBFUNC_UNIT_DEREG = 0x02;                   // Announce Unit Deregistration
+        public const byte NET_ANNC_SUBFUNC_GRP_UNAFFIL = 0x03;                  // Announce Group Affiliation Removal
         public const byte NET_ANNC_SUBFUNC_AFFILS = 0x90;                       // Update All Affiliations
 
         /*
diff --git a/FnePeer.cs b/FnePeer.cs
index 931a779..0787a70 100644
--- a/FnePeer.cs
+++ b/FnePeer.cs
@@ -269,6 +269,21 @@ namespace fnecore
             FneUtils.Write3Bytes(dstId, ref res, 3);
 
             SendMaster(CreateOpcode(Constants.NET_FUNC_ANNOUNCE, Constants.NET_ANNC_SUBFUNC_GRP_AFFIL), res, 0, 0, true);
+
+        }
+
+        /// <summary>
+        /// Helper to send group affiliation removal announcement to the master.
+        /// </summary>
+        /// <param name="srcId"></param>
+        public void SendMasterGroupAffiliationRemoval(uint srcId)
+        {
+            // send message to master
+            byte[] res = new byte[3];
+
+            FneUtils.Write3Bytes(srcId, ref res, 0);
+
+            SendMaster(CreateOpcode(Constants.NET_FUNC_ANNOUNCE, Constants.NET_ANNC_SUBFUNC_GRP_UNAFFIL), res, 0, 0, true);
         }
 
         /// <summary>