使用进程模式时网卡DNS将自动替换为1.1.1.1和8.8.8.8，关闭后自动恢复

更新驱动文件1.5.9.3

Netch/Controllers/Mode/NFController.cs

@@ -15,6 +15,7 @@ namespace Netch.Controllers
 
         private static readonly string BinDriver = string.Empty;
         private static readonly string SystemDriver = $"{Environment.SystemDirectory}\\drivers\\netfilter2.sys";
+        private static string[] _sysDns = { };
 
         static NFController()
         {
@@ -102,7 +103,15 @@ namespace Netch.Controllers
                 {
                     Thread.Sleep(250);
 
-                    if (State == State.Started) return true;
+                    if (State == State.Started)
+                    {
+
+                        //备份并替换系统DNS
+                        _sysDns = DNS.getSystemDns();
+                        string[] dns = { "1.1.1.1", "8.8.8.8" };
+                        DNS.SetDNS(dns); 
+                        
+                        return true; }
                 }
 
                 Logging.Error(Name + "启动超时");
@@ -257,6 +266,8 @@ namespace Netch.Controllers
         public override void Stop()
         {
             StopInstance();
+            //恢复系统DNS
+            DNS.SetDNS(_sysDns);
         }
 
         /// <summary>

Netch/Netch.csproj

@@ -70,6 +70,7 @@
     </ItemGroup>
 
     <ItemGroup>
+        <Reference Include="System.Management" />
         <Reference Include="System.Net.Http" />
         <Reference Include="System.ServiceProcess" />
         <Reference Include="System.Web" />

Netch/Utils/DNS.cs

@@ -1,6 +1,9 @@
 using System;
 using System.Collections;
+using System.Linq;
+using System.Management;
 using System.Net;
+using System.Net.NetworkInformation;
 
 namespace Netch.Utils
 {
@@ -45,5 +48,51 @@ namespace Netch.Utils
                 return null;
             }
         }
+        /// <summary>
+        /// 设置DNS
+        /// </summary>
+        /// <param name="dns"></param>
+        public static void SetDNS(string[] dns)
+        {
+            ManagementClass wmi = new ManagementClass("Win32_NetworkAdapterConfiguration");
+            ManagementObjectCollection moc = wmi.GetInstances();
+            ManagementBaseObject inPar = null;
+            ManagementBaseObject outPar = null;
+            foreach (ManagementObject mo in moc)
+            {
+                //如果没有启用IP设置的网络设备则跳过，如果是虚拟机网卡也跳过
+                if (!(bool)mo["IPEnabled"] ||
+                    mo["Description"].ToString().Contains("Virtual") ||
+                    mo["Description"].ToString().Contains("VMware") ||
+                    mo["Description"].ToString().Contains("TAP"))
+                    continue;
+
+                //设置DNS地址
+                if (dns != null)
+                {
+                    inPar = mo.GetMethodParameters("SetDNSServerSearchOrder");
+                    inPar["DNSServerSearchOrder"] = dns;
+                    outPar = mo.InvokeMethod("SetDNSServerSearchOrder", inPar, null);
+                }
+            }
+        }
+        /// <summary>
+        /// 从网卡获取ip设置信息
+        /// </summary>
+        public static string[] getSystemDns()
+        {
+            var systemDns = new[] { "223.5.5.5", "1.1.1.1" };
+            foreach (var network in NetworkInterface.GetAllNetworkInterfaces())
+                if (!network.Description.Contains("Virtual") &&
+                    !network.Description.Contains("VMware") &&
+                    !network.Description.Contains("TAP") &&
+                    network.OperationalStatus == OperationalStatus.Up &&
+                    network.GetIPProperties()?.GatewayAddresses.Count != 0)
+                {
+                    systemDns = network.GetIPProperties().DnsAddresses.Select(dns => dns.ToString()).ToArray();
+                }
+
+            return systemDns;
+        }
     }
-}
+}