[Missing Feature]: Issue with PLC4J BACnet Driver - Active Connections Not Supported

[zhucPPl]

What happened?

Content:
I have encountered an issue while using the plc4j-driver-bacnet (version 0.12.0). Upon creating a connection, I received the following error message: "Active connections not yet supported." Upon inspecting the source code, I discovered that the issue stems from the protocol being set to passive=false. Further investigation revealed that none of the supported transports (udp, tcp) are returning true, indicating that they do not support active connections. Additionally, when attempting to use the 'pcap' transport, I received the error message "Unsupported transport pcap," which has left me confused.

Here is the relevant code snippet:

java
String connectionString = "bacnet-ip:pcap://127.0.0.1:47808";
PlcConnection plcConnection = PlcDriverManager.getDefault().getConnectionManager().getConnection(connectionString);

I can confirm that the address used in the connection string is valid, as I have successfully implemented BACnet using bacnet4j. Currently, I have utilized plc4j to implement the modbus and knx protocols without issues, but encountered this problem while implementing the BACnet protocol. I would greatly appreciate any assistance in resolving this matter. Thank you.

Version

v0.12.0

Programming Languages

• plc4j
• plc4go
• plc4c
• plc4net

Protocols

• AB-Ethernet
• ADS /AMS
• BACnet/IP
• CANopen
• DeltaV
• DF1
• EtherNet/IP
• Firmata
• KNXnet/IP
• Modbus
• OPC-UA
• S7

[chrisdutz]

This is actually not a bug.
Active communication in Java has never been implemented.
The beginning of the bacnet driver was a paid gig, where I had to build a driver to passively observe a bacnet network.

Sebastian worked hard on an active version in go. Not quite sure about the state there.

Right now I have no plans to do the implementation of an active bacnet driver in Java.

Perhaps others can help here or you want to get your fingers dirty :-)

I think the heavy lifting of defining all the types is done and finished.

Chris

[zhucPPl]

Thank you for your answer and for your hard work

[sruehl]

BACnet in golang is not usable yet