Compatible with UDP for FRP intranet penetration

[cleanper]

I tried to use default TCP on port 25565 on the server and then open a UDP port 25565 through the internal network. The result address was prefixed with raknet;---.--- Cannot connect.

[ishland]

Please fill the issue template.

Also using reverse proxies is not recommended, as they bring all kinds of problems that does not exist in direct connection.