/* サーバ */
private void button2_Click(object sender, EventArgs e)
{
if (server != null)
{
server.stop();
server = null;
button2.Text = "開始";
printLog("サーバ終了");
return;
}
server = new Server(Decimal.ToInt32(numericUpDown1.Value));
button2.Text = "終了";
printLog("サーバ起動");
}