Function serverside_auth

pub async fn serverside_auth(
    username: &str,
    public_key: &[u8],
    private_key: &[u8; 16],
    ip: Option<&str>,
) -> Result<GameProfile, ServerSessionServerError>

Ask Mojang’s servers if the player joining is authenticated. Included in the reply is the player’s skin and cape. The IP field is optional and equivalent to enabling ‘prevent-proxy-connections’ in server.properties