Add SO_BROADCAST option to UDP announcer to allow broadcasts

.github/workflows/build.yml

@@ -37,6 +37,6 @@ jobs:
         run: mkdir -p staging && cp target/*.jar staging
       - uses: actions/upload-artifact@v4
         with:
-          name: recceiver-package
+          name: recceiver-package-${{ matrix.os }}
           path: staging
 

src/main/java/org/phoebus/recceiver/RecceiverUDPAnnouncer.java

@@ -2,6 +2,7 @@
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
+import java.net.StandardSocketOptions;
 import java.nio.ByteBuffer;
 import java.nio.channels.DatagramChannel;
 import java.nio.charset.StandardCharsets;
@@ -26,6 +27,7 @@ public RecceiverUDPAnnouncer(int key, InetSocketAddress address, String broadcas
         this.broadcastAddress = broadcastAddress;
         this.broadcastPort = broadcastPort;
         DatagramChannel datagramChannel = DatagramChannel.open();
+        datagramChannel.setOption(StandardSocketOptions.SO_BROADCAST, true);
         this.client = datagramChannel.bind(null);
     }