无法发送唤醒与.NET核心,当在Ubuntu上的局域网
问题描述:
我想从.NET核心MVC应用程序发送唤醒LAN数据包。无法发送唤醒与.NET核心,当在Ubuntu上的局域网
它完美的作品,如果应用程序在Windows主机上托管的,但是当它在我的树莓派3运行(与Ubuntu伴侣),我收到以下错误:
fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[0]
An unhandled exception has occurred: Permission denied 255.255.255.255:40000
System.Net.Internals.SocketExceptionFactory+ExtendedSocketException (0x80004005): Permission denied 255.255.255.255:40000
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
at System.Net.Sockets.Socket.Connect(IPAddress address, Int32 port)
我用这发送WOL数据包:
public static bool WakeUp(string macAddress)
{
bool retVal = false;
try
{
byte[] mac = null;
// Parse string to byte array
string[] macDigits = null;
if (macAddress.Contains("-"))
{
macDigits = macAddress.Split('-');
}
else
{
macDigits = macAddress.Split(':');
}
if (macDigits.Length != 6)
{
//incorrect MAC address
}
else
{
mac = macDigits.Select(s => Convert.ToByte(s, 16)).ToArray();
}
if (mac != null)
{
// WOL packet is sent over UDP 255.255.255.0:40000.
UdpClient client = new UdpClient();
client.Client.Connect(IPAddress.Broadcast, 40000);
// WOL packet contains a 6-bytes trailer and 16 times a 6-bytes sequence containing the MAC address.
byte[] packet = new byte[17 * 6];
// Trailer of 6 times 0xFF.
for (int i = 0; i < 6; i++)
packet[i] = 0xFF;
// Body of magic packet contains 16 times the MAC address.
for (int i = 1; i <= 16; i++)
for (int j = 0; j < 6; j++)
packet[i * 6 + j] = mac[j];
// Submit
int result = client.Client.Send(packet);
if (result > 0)
{
retVal = true;
}
}
}
catch (Exception ex)
{
throw;
}
return retVal;
}
我将端口更改为2050用于测试目的 - >相同的错误。
万一是很重要的,下面是Program.cs中
public class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.UseStartup<Startup>()
.UseKestrel()
.UseUrls("http://*:80")
.UseContentRoot(Directory.GetCurrentDirectory())
.Build();
}
任何想法,就是这个原因的内容?应用程序的其余部分按预期工作。
答
它使节目播出后对我的作品:
// UdpClient client = new UdpClient();
client.EnableBroadcast = true;
谢谢了很多!那就是诀窍:-) – Pandora