CSHARP-2968: Exception occurs when using seedless connection string in AKS.

Author: DmitryLukyanov

src/MongoDB.Driver.Core/MongoDB.Driver.Core.csproj

@@ -43,7 +43,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="DnsClient" Version="1.2.0" />
+    <PackageReference Include="DnsClient" Version="1.3.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.6.2" PrivateAssets="All" />
     <PackageReference Include="MongoDB.Libmongocrypt" Version="1.0.0" />
     <PackageReference Include="SharpCompress" Version="0.23.0" />
@@ -59,7 +59,7 @@
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard1.5'">
     <PackageReference Include="System.Collections.Specialized" Version="4.0.1" />
     <PackageReference Include="System.Diagnostics.TextWriterTraceListener" Version="4.0.0" />
-    <PackageReference Include="System.Diagnostics.TraceSource" Version="4.0.0" />
+    <PackageReference Include="System.Diagnostics.TraceSource" Version="4.3.0" />
     <PackageReference Include="System.Net.NameResolution" Version="4.3.0" />
     <PackageReference Include="System.Net.Security" Version="4.3.2" />
     <PackageReference Include="System.Security.SecureString" Version="4.0.0" />

tests/MongoDB.Driver.Core.Tests/Core/Clusters/DnsClientWrapperTests.cs

@@ -105,7 +105,7 @@ public void ResolveSrvRecords_should_throw_when_cancellation_is_already_requeste
                 exception = Record.Exception(() => subject.ResolveSrvRecordsAsync(service, cts.Token).GetAwaiter().GetResult());
             }
 
-            exception.Should().BeOfType<OperationCanceledException>();
+            exception.Should().Match<Exception>(e => e is OperationCanceledException || e.InnerException is OperationCanceledException);
         }
 
         [Theory]
@@ -171,7 +171,7 @@ public void ResolveTxtRecords_should_throw_when_cancellation_is_already_requeste
                 exception = Record.Exception(() => subject.ResolveTxtRecordsAsync(domainName, cts.Token).GetAwaiter().GetResult());
             }
 
-            exception.Should().BeOfType<OperationCanceledException>();
+            exception.Should().Match<Exception>(e => e is OperationCanceledException || e.InnerException is OperationCanceledException);
         }
     }
 }

tests/MongoDB.Driver.Core.Tests/MongoDB.Driver.Core.Tests.csproj

@@ -39,7 +39,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="DnsClient" Version="1.2.0" />
     <PackageReference Include="FluentAssertions" Version="4.12.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.6.2" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />