fix

v2rayN/ServiceLib/Services/CoreConfig/CoreConfigSingboxService.cs

@@ -245,7 +245,7 @@ public class CoreConfigSingboxService
                 singboxConfig.route.rules.Add(rule);
             }
 
-            await GenDns(singboxConfig);
+            await GenDnsDomains(singboxConfig, _config.DNSItem);
             //var dnsServer = singboxConfig.dns?.servers.FirstOrDefault();
             //if (dnsServer != null)
             //{
@@ -317,7 +317,7 @@ public class CoreConfigSingboxService
                 await GenOutbound(node, singboxConfig.outbounds.First());
             }
             await GenMoreOutbounds(node, singboxConfig);
-            await GenDns(singboxConfig);
+            await GenDnsDomains(singboxConfig, _config.DNSItem);
 
             singboxConfig.route.rules.Clear();
             singboxConfig.inbounds.Clear();
@@ -1230,8 +1230,7 @@ public class CoreConfigSingboxService
             {
                 server = "outbound_resolver",
                 strategy = item.SingboxStrategy4Direct
-            }
+            };
-            ;
 
             if (_config.TunModeItem.EnableTun)
             {
@@ -1582,7 +1581,7 @@ public class CoreConfigSingboxService
 
             singboxConfig.dns ??= new Dns4Sbox();
             singboxConfig.dns.independent_cache = true;
-            singboxConfig.dns.final = "dns_remote"; // TODO
+            singboxConfig.dns.final = "dns_remote"; // TODO: Select fallback DNS server based on routing rules
         }
         catch (Exception ex)
         {
@@ -1593,8 +1592,7 @@ public class CoreConfigSingboxService
 
     private async Task<int> GenDnsServers(SingboxConfig singboxConfig, DNSItem dNSItem)
     {
-        var finalDns = ParseDnsAddress(dNSItem.SingboxFinalResolveDNS);
+        var finalDns = await GenDnsDomains(singboxConfig, dNSItem);
-        finalDns.tag = "final_resolver";
 
         var directDns = ParseDnsAddress(dNSItem.DirectDNS);
         directDns.tag = "dns_direct";
@@ -1668,7 +1666,6 @@ public class CoreConfigSingboxService
         singboxConfig.dns.servers ??= new List<Server4Sbox>();
         singboxConfig.dns.servers.Add(remoteDns);
         singboxConfig.dns.servers.Add(directDns);
-        singboxConfig.dns.servers.Add(finalDns);
         singboxConfig.dns.servers.Add(resolverDns);
         singboxConfig.dns.servers.Add(hostsDns);
 
@@ -1688,6 +1685,16 @@ public class CoreConfigSingboxService
         return await Task.FromResult(0);
     }
 
+    private async Task<Server4Sbox> GenDnsDomains(SingboxConfig singboxConfig, DNSItem? dNSItem)
+    {
+        var finalDns = ParseDnsAddress(dNSItem.SingboxFinalResolveDNS);
+        finalDns.tag = "final_resolver";
+        singboxConfig.dns ??= new Dns4Sbox();
+        singboxConfig.dns.servers ??= new List<Server4Sbox>();
+        singboxConfig.dns.servers.Add(finalDns);
+        return await Task.FromResult(finalDns);
+    }
+
     private async Task<int> GenDnsRules(SingboxConfig singboxConfig, DNSItem dNSItem)
     {
         singboxConfig.dns ??= new Dns4Sbox();
@@ -1778,41 +1785,42 @@ public class CoreConfigSingboxService
 
     private static Server4Sbox? ParseDnsAddress(string address)
     {
-        if (string.IsNullOrEmpty(address))
+        var addressFirst = address?.Split(address.Contains(',') ? ',' : ';').FirstOrDefault()?.Trim();
+        if (string.IsNullOrEmpty(addressFirst))
         {
             return null;
         }
 
         var server = new Server4Sbox();
 
-        if (address is "local" or "localhost")
+        if (addressFirst is "local" or "localhost")
         {
             server.type = "local";
             return server;
         }
 
-        if (address.StartsWith("dhcp://", StringComparison.OrdinalIgnoreCase))
+        if (addressFirst.StartsWith("dhcp://", StringComparison.OrdinalIgnoreCase))
         {
-            var interface_name = address.Substring(7);
+            var interface_name = addressFirst.Substring(7);
             server.type = "dhcp";
             server.Interface = interface_name == "auto" ? null : interface_name;
             return server;
         }
 
-        if (!address.Contains("://"))
+        if (!addressFirst.Contains("://"))
         {
             // udp dns
             server.type = "udp";
-            server.server = address;
+            server.server = addressFirst;
             return server;
         }
 
         try
         {
-            var protocolEndIndex = address.IndexOf("://", StringComparison.Ordinal);
+            var protocolEndIndex = addressFirst.IndexOf("://", StringComparison.Ordinal);
-            server.type = address.Substring(0, protocolEndIndex).ToLower();
+            server.type = addressFirst.Substring(0, protocolEndIndex).ToLower();
 
-            var uri = new Uri(address);
+            var uri = new Uri(addressFirst);
             server.server = uri.Host;
 
             if (!uri.IsDefaultPort)
@@ -1827,11 +1835,11 @@ public class CoreConfigSingboxService
         }
         catch (UriFormatException)
         {
-            var protocolEndIndex = address.IndexOf("://", StringComparison.Ordinal);
+            var protocolEndIndex = addressFirst.IndexOf("://", StringComparison.Ordinal);
             if (protocolEndIndex > 0)
             {
-                server.type = address.Substring(0, protocolEndIndex).ToLower();
+                server.type = addressFirst.Substring(0, protocolEndIndex).ToLower();
-                var remaining = address.Substring(protocolEndIndex + 3);
+                var remaining = addressFirst.Substring(protocolEndIndex + 3);
 
                 var portIndex = remaining.IndexOf(':');
                 var pathIndex = remaining.IndexOf('/');
@@ -1884,7 +1892,8 @@ public class CoreConfigSingboxService
             singboxConfig.experimental.cache_file = new CacheFile4Sbox()
             {
                 enabled = true,
-                path = Utils.GetBinPath("cache.db")
+                path = Utils.GetBinPath("cache.db"),
+                store_fakeip = _config.DNSItem.FakeIP == true
             };
         }
 

v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs

@@ -1164,6 +1164,32 @@ public class CoreConfigV2rayService
 
     private async Task<int> GenDnsServers(ProfileItem? node, V2rayConfig v2rayConfig, DNSItem dNSItem)
     {
+        var directDNSAddress = dNSItem?.DirectDNS?
+            .Split(dNSItem.DirectDNS?.Contains(',') == true ? ',' : ';')
+            .Select(addr => addr.Trim())
+            .Where(addr => !string.IsNullOrEmpty(addr))
+            .Select(addr => addr.StartsWith("dhcp", StringComparison.OrdinalIgnoreCase) ? "localhost" : addr)
+            .Distinct()
+            .ToList();
+
+        if (directDNSAddress != null && directDNSAddress.Count == 0)
+        {
+            directDNSAddress = new() { Global.DomainDirectDNSAddress.FirstOrDefault() };
+        }
+
+        var remoteDNSAddress = dNSItem?.RemoteDNS?
+            .Split(dNSItem.RemoteDNS?.Contains(',') == true ? ',' : ';')
+            .Select(addr => addr.Trim())
+            .Where(addr => !string.IsNullOrEmpty(addr))
+            .Select(addr => addr.StartsWith("dhcp", StringComparison.OrdinalIgnoreCase) ? "localhost" : addr)
+            .Distinct()
+            .ToList();
+
+        if (remoteDNSAddress != null && remoteDNSAddress.Count == 0)
+        {
+            remoteDNSAddress = new() { Global.DomainRemoteDNSAddress.FirstOrDefault() };
+        }
+
         var directDomainList = new List<string>();
         var directGeositeList = new List<string>();
         var proxyDomainList = new List<string>();
@@ -1257,46 +1283,64 @@ public class CoreConfigV2rayService
         v2rayConfig.dns.servers ??= new List<object>();
 
         if (proxyDomainList.Count > 0)
+        {
+            foreach (var dnsDomain in remoteDNSAddress)
             {
                 var dnsServer = new DnsServer4Ray()
                 {
-                address = dNSItem.RemoteDNS,
+                    address = dnsDomain,
                     skipFallback = true,
                     domains = proxyDomainList
                 };
                 v2rayConfig.dns.servers.Add(JsonUtils.SerializeToNode(dnsServer));
             }
-        if (proxyGeositeList.Count > 0)
-        {
-            var dnsServer = new DnsServer4Ray()
-            {
-                address = dNSItem.RemoteDNS,
-                skipFallback = true,
-                domains = proxyGeositeList
-            };
-            v2rayConfig.dns.servers.Add(JsonUtils.SerializeToNode(dnsServer));
         }
         if (directDomainList.Count > 0)
+        {
+            foreach (var dnsDomain in directDNSAddress)
             {
                 var dnsServer = new DnsServer4Ray()
                 {
-                address = dNSItem.DirectDNS,
+                    address = dnsDomain,
                     skipFallback = true,
                     domains = directDomainList
                 };
                 v2rayConfig.dns.servers.Add(JsonUtils.SerializeToNode(dnsServer));
             }
-        if (directGeositeList.Count > 0)
+        }
+        if (proxyGeositeList.Count > 0)
+        {
+            foreach (var dnsDomain in remoteDNSAddress)
             {
                 var dnsServer = new DnsServer4Ray()
                 {
-                address = dNSItem.DirectDNS,
+                    address = dnsDomain,
+                    skipFallback = true,
+                    domains = proxyGeositeList
+                };
+                v2rayConfig.dns.servers.Add(JsonUtils.SerializeToNode(dnsServer));
+            }
+        }
+        if (directGeositeList.Count > 0)
+        {
+            foreach (var dnsDomain in directDNSAddress)
+            {
+                var dnsServer = new DnsServer4Ray()
+                {
+                    address = dnsDomain,
                     skipFallback = true,
                     domains = directGeositeList
                 };
                 v2rayConfig.dns.servers.Add(JsonUtils.SerializeToNode(dnsServer));
             }
-        v2rayConfig.dns.servers.Add(dNSItem.RemoteDNS); // fallback DNS server
+        }
+
+        // fallback DNS server
+        // TODO: Select fallback DNS server based on routing rules
+        foreach (var dnsDomain in remoteDNSAddress)
+        {
+            v2rayConfig.dns.servers.Add(dnsDomain);
+        }
         return await Task.FromResult(0);
     }
 

v2rayN/v2rayN.Desktop/Views/DNSSettingWindow.axaml.cs

@@ -21,9 +21,9 @@ public partial class DNSSettingWindow : WindowBase<DNSSettingViewModel>
         cmbSBDirectDNSStrategy.ItemsSource = Global.SingboxDomainStrategy4Out;
         cmbSBRemoteDNSStrategy.ItemsSource = Global.SingboxDomainStrategy4Out;
         cmbDirectDNS.ItemsSource = Global.DomainDirectDNSAddress;
-        cmbSBResolverDNS.ItemsSource = Global.DomainDirectDNSAddress.Concat(new[] { "dhcp://auto" });
+        cmbSBResolverDNS.ItemsSource = Global.DomainDirectDNSAddress.Concat(new[] { "dhcp://auto,localhost" });
         cmbRemoteDNS.ItemsSource = Global.DomainRemoteDNSAddress;
-        cmbSBFinalResolverDNS.ItemsSource = Global.DomainPureIPDNSAddress;
+        cmbSBFinalResolverDNS.ItemsSource = Global.DomainPureIPDNSAddress.Concat(new[] { "dhcp://auto,localhost" });
 
         this.WhenActivated(disposables =>
         {

v2rayN/v2rayN/Views/DNSSettingWindow.xaml.cs

@@ -21,9 +21,9 @@ public partial class DNSSettingWindow
         cmbSBDirectDNSStrategy.ItemsSource = Global.SingboxDomainStrategy4Out;
         cmbSBRemoteDNSStrategy.ItemsSource = Global.SingboxDomainStrategy4Out;
         cmbDirectDNS.ItemsSource = Global.DomainDirectDNSAddress;
-        cmbSBResolverDNS.ItemsSource = Global.DomainDirectDNSAddress.Concat(new[] { "dhcp://auto" });
+        cmbSBResolverDNS.ItemsSource = Global.DomainDirectDNSAddress.Concat(new[] { "dhcp://auto,localhost" });
         cmbRemoteDNS.ItemsSource = Global.DomainRemoteDNSAddress;
-        cmbSBFinalResolverDNS.ItemsSource = Global.DomainPureIPDNSAddress;
+        cmbSBFinalResolverDNS.ItemsSource = Global.DomainPureIPDNSAddress.Concat(new[] { "dhcp://auto,localhost" });
 
         this.WhenActivated(disposables =>
         {