Validating remote address in Hazelcast. We don't have information if the other side is member or client yet.

VerifyRemoteAddressInterceptor.java

/*
// Usage:
Config config = new Config();
SocketInterceptorConfig socketInterceptorConfig = new SocketInterceptorConfig();
VerifyRemoteAddressInterceptor interceptor = new
VerifyRemoteAddressInterceptor();
socketInterceptorConfig.setImplementation(interceptor).setEnabled(true);
config.getNetworkConfig().setSocketInterceptorConfig(socketInterceptorConfig);
Hazelcast.newHazelcastInstance(config);
*/

public class VerifyRemoteAddressInterceptor implements MemberSocketInterceptor {
   @Override
   public void init(Properties properties) {}

   @Override
   public void onAccept(Socket acceptedSocket) throws IOException {
       if (! customAddressVerificationService.isAllowed(acceptedSocket.getInetAddress())) {
           throw new IOException("Connection not allowed");
       }
   }

   @Override
   public void onConnect(Socket connectedSocket) throws IOException {}
}