private void tboxInboundAddr_TextChanged(object sender, EventArgs e)
{
if (Lib.Utils.TryParseIPAddr(tboxInboundAddr.Text, out string ip, out int port))
{
if (tboxInboundAddr.ForeColor != Color.Black)
{
tboxInboundAddr.ForeColor = Color.Black;
}
serverItem.SetIPandPortOnDemand(ip, port);
}