c#网络唤醒功能实现

private IPEndPoint point;
private UdpClient client = new UdpClient();
/**
 * 唤醒远程机器方法
 * @param
 * mac 要唤醒的机器的MAC
 * IP
 * port udp消息发送端口
 *
 * 摘要：唤醒方法为网卡提供的魔术封包功能，即以广播模式发送6个FF加上16遍目标MAC地址的字节数组
 **/
private void wakeUp(string mac, int port, string ip)
{
    byte[] magicBytes = getMagicPacket(mac);
    point = new IPEndPoint(IPAddress.Parse(ip), port);//广播模式:255.255.255.255
    try
    {
        client.Send(magicBytes, magicBytes.Length, point);
    }
    catch (SocketException e) { MessageBox.Show(e.Message); }
}

/// <summary>
/// 字符串转16进制字节数组
/// </summary>
/// <param name="hexString"></param>
/// <returns></returns>
public static byte[] strToHexByte(string hexString)
{
    hexString = hexString.Replace(" ", "");
    if ((hexString.Length % 2) != 0)
        hexString += " ";
    byte[] returnBytes = new byte[hexString.Length / 2];
    for (int i = 0; i < returnBytes.Length; i++)
        returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
    return returnBytes;
}

/// <summary>
/// 拼装MAC魔术封包
/// </summary>
/// <param name="hexString"></param>
/// <returns></returns>
public static byte[] getMagicPacket(string macString)
{
    byte[] returnBytes = new byte[102];
    string commandString = "FFFFFFFFFFFF";
    for (int i = 0; i < 6; i++)
        returnBytes[i] = Convert.ToByte(commandString.Substring(i * 2, 2), 16);
    byte[] macBytes = strToHexByte(macString);
    for (int i = 6; i < 102; i++)
    {
        returnBytes[i] = macBytes[i % 6];
    }
    return returnBytes;
}