Play midi over the internet, with sockets
This is a peer-to-peer socket for 2-way MIDI signals. It will attempt to traverse firewalls in the way, and allow you to send MIDI back and forth via a virtual MIDI pipe.
After installing with npm install -g jetmidi, you can run jetmidi to get some help.
One one computer (IP address 192.168.0.4, in this example) run this:
jetmidi --ip 192.168.0.5 --port 5556 --destination 5557
On the other machine (IP address 192.168.0.5, in this example):
jetmidi --ip 192.168.0.4 --port 5557 --destination 5556
On both computers you will get virtual MIDI devices named "JetMIDI in/out" that you can connect your DAW or input device to.