Ping(Player client)

    /// <summary>
    /// ping测试网络延迟, 通过<see cref="OnPingCallback"/>事件回调
    /// </summary>
    /// <param name="client"></param>
    public void Ping(Player client)
    {
        long timelong = DateTime.Now.Ticks;
        Send(client, NetCmd.Ping, BitConverter.GetBytes(timelong));
    }