Can Digitalpetri send disconnection signal to master?

[uangeldev]

Now, we are using ditailpetri as modbus proxy.
digitalpetri is working as slave and connecting 2 masters.

question. when 1 master is disconned, digitalpetri can send this signal to another master?

FYI: We got this error when 1 master was disconnected.
2025-04-23 04:03:01.238 [modbus-netty-event-loop-0] DEBUG c.d.modbus.slave.ModbusTcpSlave - Master/client channel closed: [id: 0xf5169886, L:/10.42.0.205:5520 ! R:/10.42.0.1:48964]

Thank you.

[kevinherron]

You might be able to listen for client disconnects with something like this:

var channelInactiveHandler =
    new ChannelInboundHandlerAdapter() {
      @Override
      public void channelInactive(ChannelHandlerContext ctx) {
        System.out.println("Client disconnected: " + ctx.channel().remoteAddress());
        ctx.fireChannelInactive();
      }
    };

var serverTransport =
    NettyTcpServerTransport.create(
        cfg -> {
          cfg.bindAddress = "localhost";
          cfg.port = port;
          cfg.pipelineCustomizer = pipeline -> pipeline.addLast(channelInactiveHandler);
        });

How you would signal that to the other connected client(s) is something you would have to invent, there is nothing like that defined by Modbus.