修复dns客户端问题

@libs/dnscrypt-proxy.toml

@@ -86,7 +86,7 @@ disabled_server_names = []
 ## (dnscrypt-proxy will always encrypt everything even using UDP), and can
 ## only increase latency.
 
-force_tcp = true
+force_tcp = false
 
 
 ## SOCKS proxy

FastGithub.Dns/DnsInterceptor.cs

@@ -70,7 +70,7 @@ namespace FastGithub.Dns
                 {
                     try
                     {
-                        this.ProcessDnsPacket(packetBuffer, ref packetLength);
+                        this.ProcessDnsPacket(packetBuffer, ref winDivertAddress, ref packetLength);
                     }
                     catch (Exception ex)
                     {
@@ -136,7 +136,9 @@ namespace FastGithub.Dns
         /// 处理DNS数据包
         /// </summary>
         /// <param name="packetBuffer"></param>
-        private void ProcessDnsPacket(byte[] packetBuffer, ref uint packetLength)
+        /// <param name="winDivertAddress"></param>
+        /// <param name="packetLength"></param>
+        private void ProcessDnsPacket(byte[] packetBuffer, ref WinDivertAddress winDivertAddress, ref uint packetLength)
         {
             var packetData = packetBuffer.AsSpan(0, (int)packetLength).ToArray();
             var packet = Packet.ParsePacket(LinkLayers.Raw, packetData);
@@ -144,6 +146,11 @@ namespace FastGithub.Dns
             var udpPacket = (UdpPacket)ipPacket.PayloadPacket;
 
             var request = Request.FromArray(udpPacket.PayloadData);
+            if (request.OperationCode != OperationCode.Query)
+            {
+                return;
+            }
+
             var question = request.Questions.FirstOrDefault();
             if (question == null || question.Type != RecordType.A)
             {
@@ -175,6 +182,16 @@ namespace FastGithub.Dns
             // 修改数据内容和数据长度
             packet.Bytes.CopyTo(packetBuffer, 0);
             packetLength = (uint)packet.Bytes.Length;
+
+            // 反转方向
+            if (winDivertAddress.Direction == WinDivertDirection.Inbound)
+            {
+                winDivertAddress.Direction = WinDivertDirection.Outbound;
+            }
+            else
+            {
+                winDivertAddress.Direction = WinDivertDirection.Inbound;
+            }
         }
     }
 }

FastGithub.DomainResolve/DomainResolver.cs

@@ -1,4 +1,5 @@
-using DNS.Client.RequestResolver;
+using DNS.Client;
+using DNS.Client.RequestResolver;
 using DNS.Protocol;
 using DNS.Protocol.ResourceRecords;
 using FastGithub.Configuration;
@@ -178,7 +179,11 @@ namespace FastGithub.DomainResolve
         {
             try
             {
-                var request = new Request();
+                var request = new Request
+                {
+                    RecursionDesired = true,
+                    OperationCode = OperationCode.Query
+                };
                 request.Questions.Add(new Question(new Domain(domain.Host), RecordType.A));
 
                 using var timeoutTokenSource = new CancellationTokenSource(this.lookupTimeout);
@@ -288,7 +293,8 @@ namespace FastGithub.DomainResolve
 
             public Task<IResponse> Resolve(IRequest request, CancellationToken cancellationToken = default)
             {
-                return this.resolver.Resolve(request, cancellationToken);
+                var clientRequest = new ClientRequest(this.resolver, request);
+                return clientRequest.Resolve(cancellationToken);
             }
 
             public override string ToString()