由于工作需要，经常需要远程客户的服务器，但是并不是所有服务器都能开外网端口，使用向日葵等软件终究还是不太方便，于是找了很多工具，包括zerotier 等，但是由于服务器在国外等有时候还不同，
于是开始自己想办法研究一个属于自己的组网工具，最后找到snltty大佬的 https://github.com/snltty/p2p-tunnel ,学习后发现是基于tun2socks实现的，
tun2socks 的优点是 把虚拟网卡的数据都打包到socket代理了，但是过滤了ping （ICmp）的包，他自行返回了 成功，这不是我要的效果
于是看了一下tun2socks 的实现，是基于tun/tap实现的，于是研究了一下，手动基于tun/tap实现了一个简易的
核心代码
1 [SupportedOSPlatform("windows")]
2 public class WinTunDriveHostedService : TunDriveHostedService
3 {
4 private readonly static string DriverPath = AppDomain.CurrentDomain.BaseDirectory + "Drivers";
5 private const string AdapterKey = "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}";
6 private const string ConnectionKey = "SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}";
7
8
9 public const int TAP_WIN_IOCTL_GET_MAC = 1;
10 public const int TAP_WIN_IOCTL_GET_VERSION = 2;
11 public const int TAP_WIN_IOCTL_GET_MTU = 3;
12 public const int TAP_WIN_IOCTL_GET_INFO = 4;
13 public const int TAP_WIN_IOCTL_CONFIG_POINT_TO_POINT = 5;
14 public const int TAP_WIN_IOCTL_SET_MEDIA_STATUS = 6;
15 public const int TAP_WIN_IOCTL_CONFIG_DHCP_MASQ = 7;
16 public const int TAP_WIN_IOCTL_GET_LOG_LINE = 8;
17 public const int TAP_WIN_IOCTL_CONFIG_DHCP_SET_OPT = 9;
18 public const int TAP_WIN_IOCTL_CONFIG_TUN = 10;
19
20 public const uint FILE_ATTRIBUTE_SYSTEM = 0x4;
21 public const uint FILE_FLAG_OVERLAPPED = 0x40000000;
22 public const uint METHOD_BUFFERED = 0;
23 public const uint FILE_ANY_ACCESS = 0;
24 public const uint FILE_DEVICE_UNKNOWN = 0x22;
25 public WinTunDriveHostedService(IOptions<TunDriveConfig> tunDriveConfigOptions, ILogger<WinTunDriveHostedService> logger) : base(tunDriveConfigOptions, logger)
26 {
27 }
28 [DllImport("Kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
29 public static extern bool DeviceIoControl(SafeHandle device, uint IoControlCode, IntPtr InBuffer, uint InBufferSize, IntPtr OutBuffer, uint OutBufferSize, ref uint BytesReturned, IntPtr Overlapped);
30
31
32 protected override FileStream OpenDrive()
33 {
34 var className = InstallOrGetClassNameDrive();
35 var safeFileHandle = System.IO.File.OpenHandle($@"\\.\\Global\\{className}.tap", FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite, FileOptions.Asynchronous);
36 return new FileStream(safeFileHandle, FileAccess.ReadWrite, 1500);
37 }
38 protected virtual string InstallOrGetClassNameDrive()
39 {
40 using (RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(ConnectionKey))
41 {
42 var names = registryKey.GetSubKeyNames();
43 foreach (var name in names)
44 {
45 using (var connectionRegistryKey = registryKey.OpenSubKey(name).OpenSubKey("Connection"))
46 {
47 if (connectionRegistryKey != null && connectionRegistryKey.GetValue("Name").ToString() == TunDriveConfig.TunDriveName)
48 {
49 return name;
50 }
51 }
52 }
53
54 Directory.CreateDirectory(DriverPath);
55 ZipArchive zipArchive = new ZipArchive(typeof(WinTunDriveHostedService).Assembly.GetManifestResourceStream($"RemoteNetwork.{(Environment.Is64BitOperatingSystem ? "amd64" : "i386")}.zip"), ZipArchiveMode.Read);
56 foreach (ZipArchiveEntry entry in zipArchive.Entries)
57 {
58 entry.ExtractToFile(Path.Combine(DriverPath, entry.FullName), overwrite: true);
59 }
60 StartProcess(Path.Combine(DriverPath, "tapinstall.exe"), $"install OemVista.inf TAP0901", "runas", DriverPath);
61 foreach (var name in registryKey.GetSubKeyNames())
62 {
63 if (!names.Contains(name))
64 {
65 using (var connectionRegistryKey = registryKey.OpenSubKey(name).OpenSubKey("Connection"))
66 {
67 if (connectionRegistryKey != null)
68 {
69 StartProcess("netsh", @$"interface set interface name=""{connectionRegistryKey.GetValue("Name")}"" newname=""{TunDriveConfig.TunDriveName}""");
70 return name;
71 }
72 }
73 }
74 }
75 return string.Empty;
76 }
77 }
78 private static int ParseIP(string address)
79 {
80 byte[] addressBytes = address.Split('.').Select(s => byte.Parse(s)).ToArray();
81 return addressBytes[0] | (addressBytes[1] << 8) | (addressBytes[2] << 16) | (addressBytes[3] << 24);
82 }
83 protected override void ConfigIP(string ip, string netmask)
84 {
85 StartProcess("netsh", $"interface ip set address name=\"{TunDriveConfig.TunDriveName}\" source=static addr={ip} mask={netmask} gateway=none");
86 IntPtr intPtr = Marshal.AllocHGlobal(12);
87 Marshal.WriteInt32(intPtr, 0, ParseIP(ip));
88 Marshal.WriteInt32(intPtr, 4, 0);
89 Marshal.WriteInt32(intPtr, 8,0);
90 uint lpBytesReturned = 0;
91 bool result = DeviceIoControl(TunStream.SafeFileHandle, 2228264, intPtr, 12u, intPtr, 12u, ref lpBytesReturned, IntPtr.Zero);
92 Marshal.FreeHGlobal(intPtr);
93 }
94 private static uint CTL_CODE(uint iDeviceType, uint iFunction, uint iMethod, uint iAccess)
95 {
96 return ((iDeviceType << 16) | (iAccess << 14) | (iFunction << 2) | iMethod);
97 }
98 public override bool ConnectionState(bool connection)
99 {
100 uint Length = 0;
101 IntPtr cconfig = Marshal.AllocHGlobal(4);
102 Marshal.WriteInt32(cconfig, connection ? 1 : 0);
103
104 var b = DeviceIoControl(TunStream.SafeFileHandle, CTL_CODE(FILE_DEVICE_UNKNOWN, TAP_WIN_IOCTL_SET_MEDIA_STATUS, METHOD_BUFFERED, FILE_ANY_ACCESS), cconfig, 4, cconfig, 4, ref Length, IntPtr.Zero);
105 StartProcess("netsh", $"netsh interface ipv4 set subinterface \"{TunDriveConfig.TunDriveName}\" mtu=\"1400\" store=persistent");
106 return b;
107 }
108 }
liunx 核心代码
1 public class TunNetWorkFrameHostedService : BackgroundService
2 {
3 private readonly string exchangeHostName = "";
4 private readonly int P2PPort = 61000;
5 protected readonly ILogger<TunNetWorkFrameHostedService> _logger;
6 public static TunNetWorkFrameHostedService Instance { get; private set; }
7 private readonly UdpClient udpClient;
8 private readonly System.Net.IPEndPoint remoteEndPoint = new System.Net.IPEndPoint(0, 0);
9 public TunNetWorkFrameHostedService(ILogger<TunNetWorkFrameHostedService> logger, IOptions<TunDriveConfig> tunDriveConfigOptions)
10 {
11 exchangeHostName = tunDriveConfigOptions.Value.DataExchangeHostName;
12 _logger = logger;
13 Instance = this;
14 udpClient = new UdpClient(0); if (Environment.OSVersion.Platform == PlatformID.Win32NT)
15 {
16 const int SIP_UDP_CONNRESET = -1744830452;
17 udpClient.Client.IOControl(SIP_UDP_CONNRESET, new byte[] { 0, 0, 0, 0 }, null);
18 }
19 }
20
21
22 protected override async Task ExecuteAsync(CancellationToken stoppingToken)
23 {
24 udpClient.BeginReceive(ReceiveCallback, udpClient);
25 while (!stoppingToken.IsCancellationRequested)
26 {
27 await udpClient.SendAsync(TunDriveHostedService.Instance.Id, exchangeHostName, P2PPort, stoppingToken).ConfigureAwait(false);
28 await Task.Delay(1000*30, stoppingToken).ConfigureAwait(false);
29 }
30 }
31 void ReceiveCallback(IAsyncResult ar)
32 {
33 System.Net.IPEndPoint remoteEndPoint = new System.Net.IPEndPoint(0, 0);
34 byte[] bytes = null;
35 try
36 {
37
38 bytes = udpClient.EndReceive(ar, ref remoteEndPoint);
39
40 }
41 finally
42 {
43 udpClient.BeginReceive(ReceiveCallback, udpClient);
44 }
45 if (bytes.Length == 4)
46 {
47 return;
48 }
49 if (bytes.Length == 5)
50 {
51 if (bytes[0] == 2)
52 {
53 P2PUDPSocketHostedService.Instance.TestP2P(bytes.Skip(1).ToArray(),false);
54 }
55 return;
56 }
57
58 TunDriveHostedService.Instance.WriteFrameBuffer(bytes);
59 }
60 public virtual async Task WriteFrameBufferAsync(Memory<byte> buffer, CancellationToken stoppingToken)
61 {
62 var destId = BitConverter.ToInt32(buffer.Slice(16, 4).ToArray(), 0);
63
64 var tunNetWorkFrameSend= P2PUDPSocketHostedService.Instance.GetP2PClient(buffer.Slice(16, 4).ToArray());
65 if (tunNetWorkFrameSend != null)
66 {
67 await tunNetWorkFrameSend.SendAsync(buffer, stoppingToken).ConfigureAwait(false);
68 return;
69 }
70 var bytes = new byte[buffer.Length + 8];
71 buffer.Slice(12, 8).CopyTo(bytes);
72 Array.Copy(buffer.ToArray(), 0,bytes,8,buffer.Length);
73 await udpClient.SendAsync(bytes, exchangeHostName, P2PPort, stoppingToken).ConfigureAwait(false);
74 //var destId = BitConverter.ToInt32(buffer.Slice(16, 4).ToArray(), 0);// string.Join(".", buffer.Slice(16, 4).ToArray());// span[16] << 24 | span[17] << 16 | span[18] << 8 | span[19];
75 //var sourceId = BitConverter.ToInt32(buffer.Slice(12, 4).ToArray(), 0);
76 //_logger.LogInformation($"{sourceId} 发送到{destId}");
77 }
78 /// <summary>
79 /// 发送打洞请求
80 /// </summary>
81 /// <param name="destId"></param>
82 /// <param name="stoppingToken"></param>
83 /// <returns></returns>
84 public virtual async Task SendP2PRequestAsync(byte[] destId, CancellationToken stoppingToken)
85 {
86 using (MemoryStream memoryStream = new MemoryStream()) {
87 memoryStream.Write(TunDriveHostedService.Instance.Id);
88 memoryStream.Write(destId);
89 memoryStream.WriteByte(2);
90 memoryStream.Write(TunDriveHostedService.Instance.Id);
91 await udpClient.SendAsync(memoryStream.ToArray(), exchangeHostName, P2PPort, stoppingToken).ConfigureAwait(false);
92 }
93
94 }
95 }
View Code
以下是远程桌面的效果
客户端运行
打洞成功
测速
代码地址
https://github.com/hn-lyf/RemoteNetwork
测试客户端
https://files.cnblogs.com/files/dotnet-org-cn/linux-x64.zip?t=1717937932&download=true
https://files.cnblogs.com/files/dotnet-org-cn/win-x64.zip?t=1717937932&download=true
https://files.cnblogs.com/files/dotnet-org-cn/win-x86.zip?t=1717937932&download=true
标签：const,udpClient,int,bytes,网卡,var,NET,public,组网 From： https://www.cnblogs.com/dotnet-org-cn/p/18239999