билдится на старом дотнете

Example.Backend/Example.Backend.csproj

@@ -2,9 +2,11 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net9.0</TargetFramework>
-        <ImplicitUsings>enable</ImplicitUsings>
+        <TargetFramework>netstandard2.1</TargetFramework>
+
         <Nullable>enable</Nullable>
+
+        <LangVersion>9</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>

Example.Backend/LoadTestImp.cs

@@ -1,28 +1,30 @@
-using Example.Shared;
+using System;
+using Example.Shared;
 using mROA.Implementation.Attributes;
 
-namespace Example.Backend;
-
-[SharedObjectSingleton]
-public class LoadTestImp : ILoadTest
+namespace Example.Backend
 {
-    public int Next(int last)
+    [SharedObjectSingleton]
+    public class LoadTestImp : ILoadTest
     {
-        return last + 1;
-    }
+        public int Next(int last)
+        {
+            return last + 1;
+        }
 
-    public int Last(int next)
-    {
-        return next - 1;
-    }
+        public int Last(int next)
+        {
+            return next - 1;
+        }
 
-    public void C()
-    {
-        throw new NotImplementedException();
-    }
+        public void C()
+        {
+            throw new NotImplementedException();
+        }
 
-    public void A()
-    {
-        throw new NotImplementedException();
+        public void A()
+        {
+            throw new NotImplementedException();
+        }
     }
 }

Example.Backend/Page.cs

@@ -1,13 +1,14 @@
 using System.Text;
 using Example.Shared;
 
-namespace Example.Backend;
-
-public class Page : IPage
+namespace Example.Backend
 {
-    public string Text;
-    public byte[] GetData()
+    public class Page : IPage
     {
-        return Encoding.UTF8.GetBytes(Text);
+        public string Text;
+        public byte[] GetData()
+        {
+            return Encoding.UTF8.GetBytes(Text);
+        }
     }
 }

Example.Backend/Printer.cs

@@ -1,20 +1,22 @@
+using System.Threading;
+using System.Threading.Tasks;
 using Example.Shared;
 using mROA.Implementation;
 
-namespace Example.Backend;
-
-
-public class Printer : IPrinter
+namespace Example.Backend
 {
-    public string Name;
-    public string GetName()
+    public class Printer : IPrinter
     {
-        return Name;
-    }
+        public string Name;
+        public string GetName()
+        {
+            return Name;
+        }
 
-    public async Task<SharedObject<IPage>> Print(string text, CancellationToken cancellationToken = default)
-    {
-        // throw new Exception("The method or operation is not implemented.");
-        return new Page {Text = text};
+        public async Task<SharedObject<IPage>> Print(string text, CancellationToken cancellationToken = default)
+        {
+            // throw new Exception("The method or operation is not implemented.");
+            return new Page {Text = text};
+        }
     }
 }

Example.Backend/PrinterFactory.cs

@@ -1,40 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
 using Example.Shared;
 using mROA.Implementation;
 using mROA.Implementation.Attributes;
 
-namespace Example.Backend;
-
-[SharedObjectSingleton]
-public class PrinterFactory : IPrinterFactory
+namespace Example.Backend
 {
-    private List<IPrinter> _printers = new();
-
-    public SharedObject<IPrinter> Create(string printerName)
+    [SharedObjectSingleton]
+    public class PrinterFactory : IPrinterFactory
     {
-        Console.WriteLine("Creating printer");
-        return new Printer { Name = printerName };
-    }
+        private List<IPrinter> _printers = new List<IPrinter>();
 
-    public void Register(SharedObject<IPrinter> printer)
-    {
-        _printers.Add(printer.Value);
-        Console.WriteLine("Registered printer");
-    }
+        public SharedObject<IPrinter> Create(string printerName)
+        {
+            Console.WriteLine("Creating printer");
+            return new Printer { Name = printerName };
+        }
 
-    public SharedObject<IPrinter> GetPrinterByName(string printerName)
-    {
-        Console.WriteLine("Getting printer");
-        return new SharedObject<IPrinter>(_printers.Find(i => i.GetName() == printerName)!);
-    }
+        public void Register(SharedObject<IPrinter> printer)
+        {
+            _printers.Add(printer.Value);
+            Console.WriteLine("Registered printer");
+        }
 
-    public SharedObject<IPrinter> GetFirstPrinter()
-    {
-        return new SharedObject<IPrinter>(_printers.First());
-    }
+        public SharedObject<IPrinter> GetPrinterByName(string printerName)
+        {
+            Console.WriteLine("Getting printer");
+            return new SharedObject<IPrinter>(_printers.Find(i => i.GetName() == printerName)!);
+        }
 
-    public string[] CollectAllNames()
-    {
-        Console.WriteLine("Collecting all printers");
-        return _printers.Select(i => i.GetName()).ToArray();
+        public SharedObject<IPrinter> GetFirstPrinter()
+        {
+            return new SharedObject<IPrinter>(_printers.First());
+        }
+
+        public string[] CollectAllNames()
+        {
+            Console.WriteLine("Collecting all printers");
+            return _printers.Select(i => i.GetName()).ToArray();
+        }
     }
 }

Example.Backend/Program.cs

@@ -7,37 +7,43 @@ using mROA.Implementation.Backend;
 using mROA.Implementation.Bootstrap;
 using mROA.Implementation.Frontend;
 
-
-var builder = new FullMixBuilder();
-builder.UseJsonSerialisation();
-builder.Modules.Add(new BackendIdentityGenerator());
-builder.UseNetworkGateway(new IPEndPoint(IPAddress.Loopback, 4567), typeof(NextGenerationInteractionModule),
-    builder.GetModule<IIdentityGenerator>()!);
-
-builder.Modules.Add(new ConnectionHub());
-builder.Modules.Add(new HubRequestExtractor(typeof(RequestExtractor)));
-
-builder.UseBasicExecution();
-
-builder.Modules.Add(new RemoteContextRepository());
-// builder.UseCollectableContextRepository(typeof(PrinterFactory).Assembly);
-builder.Modules.Add(new MultiClientContextRepository(i =>
+class Program
 {
-    var repo = new ContextRepository();
-    repo.FillSingletons(typeof(PrinterFactory).Assembly);
-    return repo;
-}));
-builder.SetupMethodsRepository(new CoCodegenMethodRepository());
-builder.Modules.Add(new CreativeRepresentationModuleProducer([builder.GetModule<JsonSerializationToolkit>()!],
-    typeof(RepresentationModule)));
+    public static void Main(string[] args)
+    {
+        var builder = new FullMixBuilder();
+        builder.UseJsonSerialisation();
+        builder.Modules.Add(new BackendIdentityGenerator());
+        builder.UseNetworkGateway(new IPEndPoint(IPAddress.Loopback, 4567), typeof(NextGenerationInteractionModule),
+            builder.GetModule<IIdentityGenerator>()!);
 
-builder.Build();
-new RemoteTypeBinder();
+        builder.Modules.Add(new ConnectionHub());
+        builder.Modules.Add(new HubRequestExtractor(typeof(RequestExtractor)));
 
-TransmissionConfig.RealContextRepository = builder.GetModule<MultiClientContextRepository>();
-TransmissionConfig.RemoteEndpointContextRepository = builder.GetModule<RemoteContextRepository>();
-TransmissionConfig.OwnershipRepository = new MultiClientOwnershipRepository();
+        builder.UseBasicExecution();
 
-var gateway = builder.GetModule<IGatewayModule>();
+        builder.Modules.Add(new RemoteContextRepository());
+// builder.UseCollectableContextRepository(typeof(PrinterFactory).Assembly);
+        builder.Modules.Add(new MultiClientContextRepository(i =>
+        {
+            var repo = new ContextRepository();
+            repo.FillSingletons(typeof(PrinterFactory).Assembly);
+            return repo;
+        }));
+        builder.SetupMethodsRepository(new CoCodegenMethodRepository());
+        builder.Modules.Add(new CreativeRepresentationModuleProducer(
+            new IInjectableModule[] { builder.GetModule<JsonSerializationToolkit>()! },
+            typeof(RepresentationModule)));
 
-gateway.Run();
+        builder.Build();
+        new RemoteTypeBinder();
+
+        TransmissionConfig.RealContextRepository = builder.GetModule<MultiClientContextRepository>();
+        TransmissionConfig.RemoteEndpointContextRepository = builder.GetModule<RemoteContextRepository>();
+        TransmissionConfig.OwnershipRepository = new MultiClientOwnershipRepository();
+
+        var gateway = builder.GetModule<IGatewayModule>();
+
+        gateway.Run();
+    }
+}