2.19.0

* Fix DateTime in Response

* // Set the DateTime from the Response to the current DateTime

---------

Co-authored-by: Stef Heyenrath <stef.heyenrath@apg.nl>

CHANGELOG.md

@@ -1,6 +1,14 @@
+# 2.19.0 (07 October 2026)
+- [#1512](https://github.com/wiremock/WireMock.Net/pull/1512) - Use IDateTimeUtils in WireMockWebSocketContext [bug] contributed by [StefH](https://github.com/StefH)
+- [#1514](https://github.com/wiremock/WireMock.Net/pull/1514) - Fix DateTime in Response [bug] contributed by [StefH](https://github.com/StefH)
+- [#1511](https://github.com/wiremock/WireMock.Net/issues/1511) - Incorrect response datetime for mapped response [bug]
+
+# 2.18.0 (22 September 2026)
+- [#1510](https://github.com/wiremock/WireMock.Net/pull/1510) - WireMock.Net.OpenApiParser: fix depencency on RamlToOpenApiConverter.SourceOnly [bug] contributed by [StefH](https://github.com/StefH)
+- [#1508](https://github.com/wiremock/WireMock.Net/issues/1508) - Transitive Dependency Conflict with Microsoft.OpenApi in 2.16.0 [bug]
+
 # 2.17.0 (21 September 2026)
 - [#1509](https://github.com/wiremock/WireMock.Net/pull/1509) - Revert to RamlToOpenApiConverter.SourceOnly [bug] contributed by [StefH](https://github.com/StefH)
-- [#1508](https://github.com/wiremock/WireMock.Net/issues/1508) - Transitive Dependency Conflict with Microsoft.OpenApi in 2.16.0 [bug]
 
 # 2.16.0 (19 September 2026)
 - [#1502](https://github.com/wiremock/WireMock.Net/pull/1502) - Fix #1501: Generate WhenStateIs/WillSetStateTo correctly in ToCSharpCode contributed by [Bafyn](https://github.com/Bafyn)

Directory.Build.props

@@ -4,7 +4,7 @@
     </PropertyGroup>
 
     <PropertyGroup>
-        <VersionPrefix>2.17.0</VersionPrefix>
+        <VersionPrefix>2.18.0</VersionPrefix>
         <PackageIcon>WireMock.Net-Logo.png</PackageIcon>
         <PackageProjectUrl>https://github.com/wiremock/WireMock.Net</PackageProjectUrl>
         <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>

Generate-ReleaseNotes.cmd

@@ -1,6 +1,6 @@
 rem https://github.com/StefH/GitHubReleaseNotes
 
-SET version=2.17.0
+SET version=2.19.0
 
 GitHubReleaseNotes --output CHANGELOG.md --skip-empty-releases --exclude-labels wontfix test question invalid doc duplicate example environment --version %version% --token %GH_TOKEN%
 

PackageReleaseNotes.txt

@@ -1,5 +1,6 @@
-# 2.17.0 (21 September 2026)
-- #1509 Revert to RamlToOpenApiConverter.SourceOnly [bug]
-- #1508 Transitive Dependency Conflict with Microsoft.OpenApi in 2.16.0 [bug]
+# 2.19.0 (07 October 2026)
+- #1512 Use IDateTimeUtils in WireMockWebSocketContext [bug]
+- #1514 Fix DateTime in Response [bug]
+- #1511 Incorrect response datetime for mapped response [bug]
 
 The full release notes can be found here: https://github.com/wiremock/WireMock.Net/blob/master/CHANGELOG.md

examples/WireMock.Net.Console.NET8/MainApp.cs

@@ -285,11 +285,21 @@ namespace WireMock.Net.ConsoleApplication
 
             var server = WireMockServer.Start(new WireMockServerSettings
             {
+                StartAdminInterface = true,
                 Logger = new WireMockConsoleLogger(),
-
                 Port = 9091
             });
 
+            server
+              .WhenRequest(r => r
+                  .WithPath("/test")
+                  .UsingAnyMethod()
+              )
+              .ThenRespondWith(r => r
+                  .WithStatusCode(HttpStatusCode.OK)
+                  .WithBody("OK")
+              );
+
             server
                .WhenRequest(r => r
                    .WithPath("/Content-Length")

src/WireMock.Net.Abstractions/IRequestMessage.cs

@@ -32,7 +32,7 @@ public interface IRequestMessage
     string? ProxyUrl { get; set; }
 
     /// <summary>
-    /// Gets the DateTime.
+    /// The DateTime when this request was done.
     /// </summary>
     DateTime DateTime { get; }
 

src/WireMock.Net.Abstractions/IResponseMessage.cs

@@ -52,7 +52,7 @@ public interface IResponseMessage
     object? StatusCode { get; set; }
 
     /// <summary>
-    /// Gets the DateTime.
+    /// The DateTime when this response was sent.
     /// </summary>
     DateTime DateTime { get; }
 

src/WireMock.Net.Minimal/Extensions/HttpContextExtensions.cs

@@ -0,0 +1,14 @@
+// Copyright © WireMock.Net
+
+using System.Diagnostics.CodeAnalysis;
+using Microsoft.AspNetCore.Http;
+
+namespace WireMock.Extensions;
+
+internal static class HttpContextExtensions
+{
+    internal static bool TryGet<T>(this HttpContext httpContext, [NotNullWhen(true)] out T? value)
+    {
+        return httpContext.Items.TryGetValue(nameof(T), out value);
+    }
+}

src/WireMock.Net.Minimal/Owin/Mappers/OwinRequestMapper.cs

@@ -12,7 +12,7 @@ namespace WireMock.Owin.Mappers;
 /// <summary>
 /// OwinRequestMapper
 /// </summary>
-internal class OwinRequestMapper : IOwinRequestMapper
+internal class OwinRequestMapper(IDateTimeUtils dateTimeUtils) : IOwinRequestMapper
 {
     /// <inheritdoc />
     public async Task<RequestMessage> MapAsync(HttpContext context, IWireMockMiddlewareOptions options)
@@ -72,7 +72,7 @@ internal class OwinRequestMapper : IOwinRequestMapper
             await request.HttpContext.Connection.GetClientCertificateAsync()
         )
         {
-            DateTime = DateTime.UtcNow
+            DateTime = dateTimeUtils.UtcNow
         };
     }
 

src/WireMock.Net.Minimal/Owin/WireMockMiddleware.cs

@@ -171,6 +171,12 @@ internal class WireMockMiddleware(
         }
         finally
         {
+            // Set the DateTime from the Response to the current DateTime
+            if (response is ResponseMessage responseMessage)
+            {
+                responseMessage.DateTime = dateTimeUtils.UtcNow;
+            }
+
             logger.LogRequestAndResponse(logRequest, request, response, result.Match, result.Partial, activity);
 
             try
@@ -255,4 +261,4 @@ internal class WireMockMiddleware(
             scenario.Finished = mapping.NextState == null;
         });
     }
-}
+}

src/WireMock.Net.Minimal/Owin/WireMockMiddlewareLogger.cs

@@ -73,20 +73,20 @@ internal class WireMockMiddlewareLogger(
             var logEntries = options.LogEntries.ToList();
 
             foreach (var logEntry in logEntries
-                .OrderBy(le => le.RequestMessage?.DateTime ?? le.ResponseMessage?.DateTime)
+                .OrderBy(le => le.RequestMessage?.DateTime)
                 .Take(logEntries.Count - options.MaxRequestLogCount.Value))
             {
                 TryRemoveLogEntry(logEntry);
             }
         }
 
-        // In case RequestLogExpirationDuration has a value greater than 0, try to delete existing request logs based on the date.
+        // In case RequestLogExpirationDuration has a value greater than 0, try to delete existing request logs based on the RequestMessage date.
         if (options.RequestLogExpirationDuration is > 0)
         {
             var logEntries = options.LogEntries.ToList();
 
             var checkTime = dateTimeUtils.UtcNow.AddHours(-options.RequestLogExpirationDuration.Value);
-            foreach (var logEntry in logEntries.Where(le => le.RequestMessage?.DateTime < checkTime || le.ResponseMessage?.DateTime < checkTime))
+            foreach (var logEntry in logEntries.Where(le => le.RequestMessage?.DateTime < checkTime))
             {
                 TryRemoveLogEntry(logEntry);
             }

src/WireMock.Net.Minimal/ResponseBuilders/Response.cs

@@ -87,7 +87,7 @@ public partial class Response : IResponseBuilder
     {
         var message = responseMessage ?? new ResponseMessage
         {
-            DateTime = DateTime.UtcNow // We set it here to the current time.
+            DateTime = DateTime.UtcNow // Initially, this is set to the current time, but will be updated to the real time once the response has been sent.
         };
 
         return new Response(message);

src/WireMock.Net.Minimal/ResponseMessage.cs

@@ -2,7 +2,6 @@
 
 // This source file is based on mock4net by Alexandre Victoor which is licensed under the Apache 2.0 License.
 // For more details see 'mock4net/LICENSE.txt' and 'mock4net/readme.md' in this project root.
-using System.Linq;
 using Stef.Validation;
 using WireMock.ResponseBuilders;
 using WireMock.Types;

src/WireMock.Net.Minimal/ResponseProviders/WebSocketResponseProvider.cs

@@ -67,7 +67,8 @@ internal class WebSocketResponseProvider(WebSocketBuilder builder, IGuidUtils gu
                 builder,
                 options,
                 logger,
-                guidUtils
+                guidUtils,
+                dateTimeUtils
             );
 
             // Add to registry

src/WireMock.Net.Minimal/WebSockets/WireMockWebSocketContext.cs

@@ -18,6 +18,8 @@ namespace WireMock.WebSockets;
 /// </summary>
 public class WireMockWebSocketContext : IWebSocketContext
 {
+    private readonly IDateTimeUtils _dateTimeUtils;
+
     /// <inheritdoc />
     public Guid ConnectionId { get; }
 
@@ -50,7 +52,8 @@ public class WireMockWebSocketContext : IWebSocketContext
         WebSocketBuilder builder,
         IWireMockMiddlewareOptions options,
         IWireMockMiddlewareLogger logger,
-        IGuidUtils guidUtils
+        IGuidUtils guidUtils,
+        IDateTimeUtils dateTimeUtils
     )
     {
         HttpContext = httpContext;
@@ -61,6 +64,7 @@ public class WireMockWebSocketContext : IWebSocketContext
         Builder = builder;
         Options = options;
         Logger = logger;
+        _dateTimeUtils = dateTimeUtils;
 
         ConnectionId = guidUtils.NewGuid();
     }
@@ -169,7 +173,7 @@ public class WireMockWebSocketContext : IWebSocketContext
                 null
             )
             {
-                DateTime = DateTime.UtcNow
+                DateTime = _dateTimeUtils.UtcNow
             };
         }
         else
@@ -179,7 +183,7 @@ public class WireMockWebSocketContext : IWebSocketContext
             {
                 Method = method,
                 BodyData = bodyData,
-                DateTime = DateTime.UtcNow
+                DateTime = _dateTimeUtils.UtcNow
             };
         }
 

src/WireMock.Net.OpenApiParser/WireMock.Net.OpenApiParser.csproj

@@ -46,7 +46,7 @@
 
     <!-- https://github.com/wiremock/WireMock.Net/issues/1508 -->
     <ItemGroup>
-        <PackageReference Include="RamlToOpenApiConverter.SourceOnly" Version="0.40.0" />
+        <PackageReference Include="RamlToOpenApiConverter.SourceOnly" Version="0.50.0" />
     </ItemGroup>
 
     <ItemGroup Condition="'$(Configuration)' == 'Debug'">

test/WireMock.Net.Tests/Facts/RunOnDockerFact.cs

@@ -0,0 +1,29 @@
+// Copyright © WireMock.Net
+#if NET6_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using WireMock.Net.Testcontainers.Utils;
+
+namespace WireMock.Net.Tests.Facts;
+
+[ExcludeFromCodeCoverage]
+public sealed class RunOnDockerFact : FactAttribute
+{
+    public RunOnDockerFact(
+        [CallerFilePath] string? sourceFilePath = null,
+        [CallerLineNumber] int sourceLineNumber = -1) : base(sourceFilePath, sourceLineNumber)
+    {
+
+        OSPlatform currentPlatform;
+        try
+        {
+            currentPlatform = TestcontainersUtils.GetImageOSAsync.Value.Result;
+        }
+        catch
+        {
+            Skip = $"Only run test when Docker is installed.";
+        }
+    }
+}
+#endif

test/WireMock.Net.Tests/Facts/RunOnDockerPlatformFact.cs

@@ -15,7 +15,19 @@ public sealed class RunOnDockerPlatformFact : FactAttribute
         [CallerFilePath] string? sourceFilePath = null,
         [CallerLineNumber] int sourceLineNumber = -1) : base(sourceFilePath, sourceLineNumber)
     {
-        if (TestcontainersUtils.GetImageOSAsync.Value.Result != OSPlatform.Create(platform))
+
+        OSPlatform currentPlatform;
+        try
+        {
+            currentPlatform = TestcontainersUtils.GetImageOSAsync.Value.Result;
+        }
+        catch
+        {
+            Skip = $"Only run test when Docker is installed.";
+            return;
+        }
+
+        if (currentPlatform != OSPlatform.Create(platform))
         {
             Skip = $"Only run test when Docker OS Platform {platform} is used.";
         }

test/WireMock.Net.Tests/Owin/WireMockMiddlewareTests.cs

@@ -106,6 +106,15 @@ public class WireMockMiddlewareTests
     [Fact]
     public async Task WireMockMiddleware_Invoke_NoMatch()
     {
+        // Arrange
+        var inititalDateTime = new DateTime(2027, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+        var responseDateTime = new DateTime(2027, 1, 1, 0, 0, 42, DateTimeKind.Utc);
+
+        _dateTimeUtilsMock.Reset();
+        _dateTimeUtilsMock.SetupSequence(d => d.UtcNow)
+            .Returns(inititalDateTime)
+            .Returns(responseDateTime);
+
         // Act
         await _sut.Invoke(_contextMock.Object);
 
@@ -115,7 +124,7 @@ public class WireMockMiddlewareTests
         Expression<Func<ResponseMessage, bool>> match = r =>
             (int)r.StatusCode! == 404 &&
             ((StatusModel)r.BodyData!.BodyAsJson!).Status == "No matching mapping found" &&
-            r.DateTime == UtcNow;
+            r.DateTime == responseDateTime;
         _responseMapperMock.Verify(m => m.MapAsync(It.Is(match), It.IsAny<HttpResponse>()), Times.Once);
     }
 

test/WireMock.Net.Tests/Testcontainers/TestcontainersTests.cs

@@ -21,7 +21,7 @@ public class TestcontainersTests(ITestOutputHelper testOutputHelper)
         TimestampFormat = "yyy-MM-dd HH:mm:ss.fff"
     });
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_And_StartAsync_and_StopAsync()
     {
         // Act
@@ -57,7 +57,7 @@ public class TestcontainersTests(ITestOutputHelper testOutputHelper)
         await StopAsync(wireMockContainer);
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_WithImage_And_StartAsync_and_StopAsync()
     {
         // Arrange
@@ -83,7 +83,7 @@ public class TestcontainersTests(ITestOutputHelper testOutputHelper)
         await StopAsync(wireMockContainer);
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_WithImageAsText_And_StartAsync_and_StopAsync()
     {
         // Arrange

test/WireMock.Net.Tests/Testcontainers/TestcontainersTestsGrpc.cs

@@ -10,6 +10,7 @@ using Meziantou.Extensions.Logging.Xunit.v3;
 using Microsoft.Extensions.Logging;
 using WireMock.Constants;
 using WireMock.Net.Testcontainers;
+using WireMock.Net.Tests.Facts;
 using WireMock.Util;
 
 namespace WireMock.Net.Tests.Testcontainers;
@@ -25,7 +26,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         TimestampFormat = "yyy-MM-dd HH:mm:ss.fff"
     });
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_TestPortsAndUrls1()
     {
         // Arrange
@@ -82,7 +83,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         }
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_TestPortsAndUrls2()
     {
         // Arrange
@@ -136,7 +137,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         }
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_ProtoDefinitionFromJson_UsingGrpcGeneratedClient()
     {
         var wireMockContainer = await Given_WireMockContainerIsStartedForHttpAndGrpcAsync();
@@ -150,7 +151,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         await StopAsync(wireMockContainer);
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_ProtoDefinitionAtServerLevel_UsingGrpcGeneratedClient()
     {
         var wireMockContainer = await Given_WireMockContainerWithProtoDefinitionAtServerLevelIsStartedForHttpAndGrpcAsync();
@@ -164,7 +165,7 @@ public class TestcontainersTestsGrpc(ITestOutputHelper testOutputHelper)
         await StopAsync(wireMockContainer);
     }
 
-    [Fact]
+    [RunOnDockerFact]
     public async Task WireMockContainer_Build_Grpc_ProtoDefinitionAtServerLevel_UsingGrpcGeneratedClient_AndWithWatchStaticMappings()
     {
         var wireMockContainer = await Given_WireMockContainerWithProtoDefinitionAtServerLevelWithWatchStaticMappingsIsStartedForHttpAndGrpcAsync();

test/WireMock.Net.Tests/WireMockServer.Proxy.cs

@@ -18,6 +18,7 @@ using WireMock.Util;
 
 namespace WireMock.Net.Tests;
 
+[Collection(nameof(WireMockServerProxyTests))]
 public class WireMockServerProxyTests
 {
     private readonly CancellationToken _ct = TestContext.Current.CancellationToken;

test/WireMock.Net.Tests/WireMockServer.Proxy2.cs

@@ -45,6 +45,4 @@ public class WireMockServerProxy2Tests
         server.Dispose();
         serverAsProxy.Dispose();
     }
-}
-
-
+}