BACnetTimeoutException: No response from instanceId and Unable to find router to network Unable to find router to network

[anandbiradar]

While discovering the BACnet device in my application I get the following errors when running the code below.

• com.serotonin.bacnet4j.exception.BACnetException: Unable to find router to network 40208
at com.serotonin.bacnet4j.transport.DefaultTransport$Outgoing.send(DefaultTransport.java:304)
at com.serotonin.bacnet4j.transport.DefaultTransport.run(DefaultTransport.java:439)
at java.lang.Thread.run(Thread.java:748)

• com.serotonin.bacnet4j.exception.BACnetTimeoutException: No response from instanceId 888541
at com.serotonin.bacnet4j.util.RemoteDeviceFinder$DeviceFutureImpl.get(RemoteDeviceFinder.java:176)
at com.serotonin.bacnet4j.LocalDevice.getRemoteDeviceBlocking(LocalDevice.java:800)
at com.serotonin.bacnet4j.LocalDevice.getRemoteDeviceBlocking(LocalDevice.java:744)
at com.serotonin.bacnet4j.service.unconfirmed.IHaveRequest.lambda$handle$0(IHaveRequest.java:79)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

The code I wrote for this looks somewhat like program in attached.
Could you please let me know what I'm doing wrong and how to avoid these exceptions?

//
public static void main(String[] args) throws ServiceException {

        Integer deviceId = 1234;
        String port = 0xBAC0, localBindAddress = "192.168.0.145";

        IpNetworkBuilder builder = new IpNetworkBuilder();
        builder.port(Integer.decode(port));
        builder.localBindAddress(localBindAddress);

        IpNetwork network = builder.build();
        LocalDevice localDevice = new LocalDevice(deviceId, new DefaultTransport(network));
        try {
            localDevice.initialize();
        } catch (Exception e) {
            throw new ServiceException("Unable to initialize localDevice", e);
        }

        localDevice.getEventHandler().addListener(new DeviceEventAdapter() {
            @Override
            public void iAmReceived(RemoteDevice remoteDevice) {
                logger.debug("iAm Received from device: {}, NetworkNumber: {}",
                        remoteDevice.getInstanceNumber(),
                        remoteDevice.getAddress().getNetworkNumber()
                );

                Runnable task = () -> {
                    try {
                        DiscoveryUtils.getExtendedDeviceInformation(localDevice, remoteDevice);
                        SequenceOf<ObjectIdentifier> oids = RequestUtils.getObjectList(localDevice, remoteDevice);

                        for (ObjectIdentifier oid : oids) {
                            String name = ((CharacterString) RequestUtils.getProperty(localDevice, remoteDevice, oid,
                                    PropertyIdentifier.objectName)).getValue();
                            logger.info("Found object oid={}, name={} in device {}",
                                    oid,
                                    name,
                                    remoteDevice.getInstanceNumber()
                            );
                        }

                        while(true) {
                            for (ObjectIdentifier oid : oids) {
                                Encodable value = RequestUtils.getProperty(
                                        localDevice,
                                        remoteDevice,
                                        oid,
                                        PropertyIdentifier.presentValue
                                );
                                logger.info("{}={}", oid, value);
                            }
                            try {
                                Thread.sleep(5_000L);
                            } catch (InterruptedException e) {
                            }
                        }
                    } catch (BACnetException e) {
                        logger.error("Error getting values from remoteDevice", e);
                    }
                };
                new Thread(task).start();
            }
        });

        InetSocketAddress addr = InetAddrCache.get("192.168.1.99", IpNetwork.DEFAULT_PORT);
        int port = IpNetwork.DEFAULT_PORT;
        byte[] ipAddress1 = addr.getAddress().getAddress();
        
        byte[] ipMacAddress = new byte[ipAddress1.length + 2];
        System.arraycopy(ipAddress1, 0, ipMacAddress, 0, ipAddress1.length);
        ipMacAddress[ipAddress1.length] = (byte) (port >> 8);
        ipMacAddress[ipAddress1.length + 1] = (byte) port;
        OctetString macAddress123 = new OctetString(ipMacAddress);
        
        Address addr1 = new Address(macAddress123);
        localDevice.send(addr1, new WhoIsRequest());
    }

[phildunlap]

Hi anandbiradar,

Have you attempted setting the local network number in the IpNetworkBuilder?

[anandbiradar]

@phildunlap How do i set local network number in IpNetworkBuilder?

[phildunlap]

The "withLocalNetworkNumber" function, https://github.com/infiniteautomation/BACnet4J/blob/master/src/main/java/com/serotonin/bacnet4j/npdu/ip/IpNetworkBuilder.java