This mod downloads, runs & wraps kcptun.
The mod will run on launch
On first launch a kcp.conf will get created on config/kcp.conf with this data.
enabled=true
port=25577
Set enabled to true and configure whatever UDP port you want to use as KCP receiver.
On multiplayer add/edit server you will see an extra button that works as a toggle. You can switch between TCP(minecraft default) and KCP:
Specify kcp server host & port.
Warning
Server ping is not done yet! so kcp servers wont ping nor load image/motd on multiplayer list.
Kcp auto configures on no encryption & fast3, further customization is on TODO...
Java runs the KCP service as a process, it could happen that a kcp process gets stuck orphan if minecraft dies(depends on how the os handles it). If that happens you can either reboot or manually kill the service, it runs on no persistence at all.
To prevent port collision client side since user cant select on which port kcp client service listener gets setup, a random port is selected on each multiplayer connection for it.