UDP Test (#8999)

* UDP Test Increases UDP test timeout Pref exception Fix Add Minecraft Bedrock Edition Test * Optimization * Refactor * Rename
2026-10-15 09:45:00 +03:00 · 2026-04-25 02:45:45 +00:00
parent ee6ae3d91d
commit 0af29f50c0
35 changed files with 1117 additions and 30 deletions
@@ -0,0 +1,76 @@
+namespace ServiceLib.UdpTest.Tester;
+
+public class DnsService : IUdpTest
+{
+    private const int DnsDefaultPort = 53;
+    private const string DnsDefaultServer = "8.8.8.8"; // Google Public DNS
+    private static readonly byte[] DnsQueryPacket =
+    [
+        // Header: ID=0x1234, Standard query with RD set, QDCOUNT=1
+        0x12, 0x34, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00,
+        // Question: www.google.com, Type A, Class IN
+        0x03, 0x77, 0x77, 0x77, 0x06, 0x67, 0x6F, 0x6F,
+        0x67, 0x6C, 0x65, 0x03, 0x63, 0x6F, 0x6D, 0x00,
+        0x00, 0x01, 0x00, 0x01
+    ];
+
+    public byte[] BuildUdpRequestPacket()
+    {
+        return (byte[])DnsQueryPacket.Clone();
+    }
+
+    public bool VerifyAndExtractUdpResponse(byte[] dnsResponseBytes)
+    {
+        if (dnsResponseBytes.Length < 12)
+        {
+            return false;
+        }
+
+        try
+        {
+            // Check transaction ID (should match 0x1234)
+            var transactionId = BinaryPrimitives.ReadUInt16BigEndian(dnsResponseBytes.AsSpan(0, 2));
+            if (transactionId != 0x1234)
+            {
+                return false;
+            }
+
+            // Check flags - should be a response (QR=1)
+            var flags = BinaryPrimitives.ReadUInt16BigEndian(dnsResponseBytes.AsSpan(2, 2));
+            if ((flags & 0x8000) == 0)
+            {
+                return false; // Not a response
+            }
+
+            // Check response code (RCODE) - should be 0 (no error)
+            if ((flags & 0x000F) != 0)
+            {
+                return false; // DNS error
+            }
+
+            // Check answer count
+            var answerCount = BinaryPrimitives.ReadUInt16BigEndian(dnsResponseBytes.AsSpan(6, 2));
+            if (answerCount == 0)
+            {
+                return false; // No answers
+            }
+
+            return true;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    public ushort GetDefaultTargetPort()
+    {
+        return DnsDefaultPort;
+    }
+
+    public string GetDefaultTargetHost()
+    {
+        return DnsDefaultServer;
+    }
+}