fix: register api explorer in sandbox host

F4SDM42WebApi/C4ITF4SDM42WebApi.dll.host.config

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <host xmlns="urn:m42/host.config">
   <modules>
+    <module assembly="C4ITF4SDM42WebApi" />
     <module assembly="Matrix42.DataLayer.Persistence" />
     <module assembly="Matrix42.Services.WebApi" />
     <module assembly="Matrix42.ServiceRepository.BizLogic" />

F4SDM42WebApi/F4SD - M42WebApi.csproj

@@ -13,7 +13,7 @@
     <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
     <M42ExtensionId>6673a25d-33d6-4072-91d9-abed4be1a966</M42ExtensionId>
     <M42AssemblyPattern>C4ITF4SD*.*</M42AssemblyPattern>
-    <M42PackageVersion>1.4.0.32</M42PackageVersion>
+    <M42PackageVersion>1.4.0.33</M42PackageVersion>
     <M42BuildPackage>true</M42BuildPackage>
   </PropertyGroup>
 
@@ -66,6 +66,10 @@
       <HintPath>M42Libraries\26.1\System.Net.Http.Formatting.dll</HintPath>
       <Private>false</Private>
     </Reference>
+    <Reference Include="System.Web.Http">
+      <HintPath>M42Libraries\26.1\System.Web.Http.dll</HintPath>
+      <Private>false</Private>
+    </Reference>
     <Reference Include="update4u.SPS.DataLayer">
       <HintPath>M42Libraries\26.1\update4u.SPS.DataLayer.dll</HintPath>
       <Private>false</Private>
@@ -82,6 +86,7 @@
 
   <ItemGroup>
     <Compile Include="cM42LogEntry.cs" />
+    <Compile Include="F4SDM42DependencyRegistrator.cs" />
     <Compile Include="F4SDHelperService.cs" />
     <Compile Include="F4SDM42WebApiController.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />

F4SDM42WebApi/F4SDM42DependencyRegistrator.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Web.Http;
+using System.Web.Http.Description;
+
+using Matrix42.Hosting.Contracts;
+
+using C4IT.Logging;
+
+using static C4IT.Logging.cLogManager;
+
+namespace C4IT.F4SD
+{
+    public class F4SDM42DependencyRegistrator : IDependencyRegistrator
+    {
+        public void Register(IDependencyContainer container, IDependencyResolver resolver)
+        {
+            if (container == null)
+                throw new ArgumentNullException(nameof(container));
+
+            if (resolver == null)
+                throw new ArgumentNullException(nameof(resolver));
+
+            try
+            {
+                if (resolver.TryGet(typeof(IApiExplorer)) != null)
+                    return;
+            }
+            catch
+            {
+                // Existing mapping is incomplete in the sandbox host. Register a concrete instance below.
+            }
+
+            var httpConfiguration = new HttpConfiguration();
+            container.RegisterInstance(typeof(IApiExplorer), new ApiExplorer(httpConfiguration));
+            LogEntry("Registered System.Web.Http.Description.IApiExplorer for Matrix42 sandbox host.", LogLevels.Debug);
+        }
+    }
+}

F4SDM42WebApi/F4SDM42WebApiController.cs

@@ -308,7 +308,7 @@ namespace C4IT.F4SD
                 Values = vals.ToArray()
             };
             //CacheOutputAttribute.RegisterResponseEtag($"enum_{enumeration.Name}_{(int)mode}", $"{enumeration.Name}_{(int)mode}", cultureInvariant: false, userInvariant: true, val);
-            return Request.CreateResponse(HttpStatusCode.OK, enumeration);
+            return Matrix42.WebApi.Contracts.HttpResponseExtensions.CreateResponse(Request, HttpStatusCode.OK, enumeration);
         }
 
         [Route("getMyRoleMemberships"), HttpGet]