Hi joonas-fi,
I am new to this and I am trying to build and use your code by following the README. But I am falling short. Could you please update the README on how I can build holepunch client and execute it?

Also, if the remote server has the sshd running on a port other than 22, then how can I introduce custom port in the json file?

So far I have done this:

1. Edited a file holepunch.json (similar to holepunch.example.json) and kept it in cmd/holepunch directory.
2. Put an extra line: "port" : <custom_port_num> under "ssh_server": {...} since my ssh server uses a custom port for sshd and not the regular 22
3. Invoked the command: go build main.go

But I am unable to make this work by following the README. I am getting errors.
Thanks,
-amit