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I am saying the only way to detect a spontaneous disconnection, which I think it what you're asking, is to send a request of some sort and have it time out.

Then you should be able to drop a breakpoint in the ServiceFutureImpl method and see where that BACnet timeout exception is coming from. But result is same. Does it at least take longer to timeout? I do not believe the actual sending of the property request is present in the code you have shared. Nor is the configuration of the local device there. That's not a lot of information to work with.

Hi cenk, I'm not sure precisely what you mean, but, you can issue a request to it and see if it responds.

Trend log object is working in bacnet4j, isn't it. Have you ever anyone test it before. I need help about trend log.

how can i use mango master to get data/value from simulator device and monitor the simulator using any data source like modbus/dnp3/bacnet etc. please help me

Hi; I am trying Bacnet4j on linux. But when I created bacnet device The error occured. Message is below java.lang.RuntimeException: java.net.SocketException: getifaddrs not supported at com.serotonin.bacnet4j.LocalDevice.getAllLocalAddresses(LocalDevice.java:779) at com.serotonin.bacnet4j.service.unconfirmed.IAmRequest.handle(IAmRequest.java:71) at com.serotonin.bacnet4j.LocalDevice.handleUnconfirmedRequest(LocalDevice.java:733) at com.serotonin.bacnet4j.npdu.ip.IpMessageControl$IncomingMessageExecutor.runImpl(IpMessageControl.java:555) at com.serotonin.bacnet4j.npdu.ip.IpMessageControl$IncomingMessageExecutor.run(IpMessageControl.java:489) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.net.SocketException: getifaddrs not supported at java.net.VMNetworkInterface.getVMInterfaces(Native Method) at java.net.NetworkInterface.getNetworkInterfaces(Unknown Source) at com.serotonin.bacnet4j.LocalDevice.getAllLocalAddresses(LocalDevice.java:768) ...7 more It seem the Operating system is not supported getifaddrs. But how can I do. Thank you!

I think this is more a networking issue rather than a BACnet or BACnet4j issue. What I would do is create a seperate network with only the devices you want to broadcast to, and put in a gateway/route to the rest of the network to provide connectivity if you require it.

I committed a change to IpMessageControl that will provide a better exception message than the NPE. Please build from the latest source and give it another try.

I solved my problem. I have changed the prameter of PropertyIdentifier.maxSegmentsAccepted. I setted it to 5. Because of I have got alot of objects.

:-) absolutely - i am happy it works.

Yes, you should be able to do that. I don't have any equipment here at the moment to test with, but you're basically just reading object properties, so it's really no different than anything else.

WriteProperty-Request. WritePropertyMultiple-Request.

You'd have to hack the code. There's no built in way to do this.

RemoteDevice's are local proxies of other devices on the network. The localBindAddress allows you choose on which NIC to listen.

The real-life analogy is, e.g. an outdoor temperature. You can only read it - you can't change it (realistically). In cases like this having a read-only type is appropriate.