This is a simple packaging of the BACnet Protocol Stack into a single docker image. Once there it's simple to simulate a network of BACnet/IP clients and servers of various types, each in their own container, specified by a simple docker-compose file. BACnet/ethernet might also be possible, but I haven't tried yet.
It's instructive observe the traffic between containers with Wireshark or tcpdump.
First, build the BACnet container.
$ docker build -t bacnet .
Next, stand up several servers by editing docker-compose.yml for desired number of servers, clients, and device IDs, then:
$ docker-compose up -d
The "-d" runs everything in the background. You can then observe logs from all of them like this:
$ docker-compose logs
Attaching to bacnet_whois_1, bacnet_server1_1, bacnet_server2_1, bacnet_server3_1
whois_1 | Received I-Am Request from 200002, MAC = 172.17.0.3 BAC0
whois_1 | Received I-Am Request from 200001, MAC = 172.17.0.4 BAC0
whois_1 | Received I-Am Request from 200003, MAC = 172.17.0.2 BAC0
whois_1 | ;Device MAC (hex) SNET SADR (hex) APDU
whois_1 | ;-------- -------------------- ----- -------------------- ----
whois_1 | 200002 AC:11:00:03:BA:C0 0 00 1476
whois_1 | 200001 AC:11:00:04:BA:C0 0 00 1476
whois_1 | 200003 AC:11:00:02:BA:C0 0 00 1476
whois_1 | ;
whois_1 | ; Total Devices: 3
You can also issue commands as needed from a new, transient container:
$ docker run -it bacnet bacwi
$ docker run -it bacnet bacepics -v 200002
etc
See the BACnet stack bin documentation for ideas.
The example docker-compose.yml uses bridge-mode networking, which means the docker0 network interface (on Linux hosts, anyway) is usually carrying all the ethernet traffic. The tcpdump command looks like this; the wireshark one is similar.
$ sudo tcpdump -i docker0
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on docker0, link-type EN10MB (Ethernet), capture size 262144 bytes
13:17:59.066397 IP6 foo > ff02::16: HBH ICMP6, multicast listener report v2, 2 group record(s), length 48
13:17:59.320945 IP 172.17.0.2.47808 > 172.17.255.255.47808: UDP, length 25
13:17:59.862393 IP6 foo > ff02::16: HBH ICMP6, multicast listener report v2, 2 group record(s), length 48
...
Feel free to submit issues or pull requests.
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