Expansion of PR 26: Fix multicast responses not being sent out on all…

… interfaces Co-authored-by: Laurie Kirkcaldy <lauriekirkcaldy@gmail.com>
jdomnitz · Jul 2, 2024 · 1b817e4 · 1b817e4
1 parent 1352a08
commit 1b817e4
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/src/MulticastClient.cs b/src/MulticastClient.cs
@@ -78,17 +78,19 @@ public MulticastClient(bool useIPv4, bool useIpv6, IEnumerable<NetworkInterface>
                     switch (address.AddressFamily)
                     {
                         case AddressFamily.InterNetwork:
-                            receiver4.Client.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(MulticastAddressIp4, address));
+                            MulticastOption mcastOption4 = new MulticastOption(MulticastAddressIp4, address);
+                            receiver4.Client.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, mcastOption4);
                             sender.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
                             sender.Client.Bind(localEndpoint);
-                            sender.Client.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, new MulticastOption(MulticastAddressIp4));
+                            sender.Client.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, mcastOption4);
                             sender.Client.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.MulticastLoopback, true);
                             break;
                         case AddressFamily.InterNetworkV6:
-                            receiver6.Client.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.AddMembership, new IPv6MulticastOption(MulticastAddressIp6, address.ScopeId));
+                            IPv6MulticastOption mcastOption6 = new IPv6MulticastOption(MulticastAddressIp6, address.ScopeId);
+                            receiver6.Client.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.AddMembership, mcastOption6);
                             sender.Client.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
                             sender.Client.Bind(localEndpoint);
-                            sender.Client.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.AddMembership, new IPv6MulticastOption(MulticastAddressIp6));
+                            sender.Client.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.AddMembership, mcastOption6);
                             sender.Client.SetSocketOption(SocketOptionLevel.IPv6, SocketOptionName.MulticastLoopback, true);
                             break;
                         default: