diff --git a/samples/ChatApp/ChatApp.Console/ChatApp.Console.csproj b/samples/ChatApp/ChatApp.Console/ChatApp.Console.csproj
index aafa3e639..0dc2bb1c2 100644
--- a/samples/ChatApp/ChatApp.Console/ChatApp.Console.csproj
+++ b/samples/ChatApp/ChatApp.Console/ChatApp.Console.csproj
@@ -5,8 +5,14 @@
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <PublishAot>true</PublishAot>
+    <PublishTrimmed>true</PublishTrimmed>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Compile Include="..\ChatApp.Unity\Assets\Scripts\Generated\MessagePack.Generated.cs" Link="MessagePack.Generated.cs" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\..\src\MagicOnion.Client.SourceGenerator\MagicOnion.Client.SourceGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
     <ProjectReference Include="..\..\..\src\MagicOnion.Client\MagicOnion.Client.csproj" />
diff --git a/samples/ChatApp/ChatApp.Console/Program.cs b/samples/ChatApp/ChatApp.Console/Program.cs
index 71c1c4429..e6baae822 100644
--- a/samples/ChatApp/ChatApp.Console/Program.cs
+++ b/samples/ChatApp/ChatApp.Console/Program.cs
@@ -1,12 +1,26 @@
 // See https://aka.ms/new-console-template for more information
 
+using System.Runtime.CompilerServices;
 using ChatApp.Shared.Hubs;
 using ChatApp.Shared.MessagePackObjects;
 using Grpc.Net.Client;
 using MagicOnion.Client;
+using MessagePack;
+using MessagePack.Resolvers;
 
-var channel = GrpcChannel.ForAddress("http://localhost:5000");
+if (!RuntimeFeature.IsDynamicCodeSupported)
+{
+    // Running on Native AOT
+    StaticCompositeResolver.Instance.Register(
+        BuiltinResolver.Instance,
+        PrimitiveObjectResolver.Instance,
+        MagicOnionGeneratedClientInitializer.Resolver,
+        MessagePack.Resolvers.GeneratedResolver.Instance
+    );
+    MessagePackSerializer.DefaultOptions = MessagePackSerializer.DefaultOptions.WithResolver(StaticCompositeResolver.Instance);
+}
 
+var channel = GrpcChannel.ForAddress("http://localhost:5000");
 var sessionId = Guid.NewGuid();
 Console.WriteLine("Connecting...");
 var hub = await StreamingHubClient.ConnectAsync<IChatHub, IChatHubReceiver>(channel, new ChatHubReceiver(sessionId));
@@ -30,7 +44,6 @@
 [MagicOnionClientGeneration(typeof(IChatHub))]
 partial class MagicOnionGeneratedClientInitializer;
 
-
 class ChatHubReceiver(Guid sessionId) : IChatHubReceiver
 {
     public void OnJoin(string name)
diff --git a/src/MagicOnion.Abstractions/Internal/Box.cs b/src/MagicOnion.Abstractions/Internal/Box.cs
index 3a0acc1a4..63b6db870 100644
--- a/src/MagicOnion.Abstractions/Internal/Box.cs
+++ b/src/MagicOnion.Abstractions/Internal/Box.cs
@@ -18,21 +18,21 @@ internal Box(T value)
             Value = value;
         }
 
-        public bool Equals(Box<T> other)
+        public bool Equals(Box<T>? other)
         {
             if (ReferenceEquals(null, other)) return false;
             if (ReferenceEquals(this, other)) return true;
             return EqualityComparer<T>.Default.Equals(Value, other.Value);
         }
 
-        public override bool Equals(object obj)
+        public override bool Equals(object? obj)
         {
             return ReferenceEquals(this, obj) || obj is Box<T> other && Equals(other);
         }
 
         public override int GetHashCode()
         {
-            return EqualityComparer<T>.Default.GetHashCode(Value);
+            return EqualityComparer<T>.Default.GetHashCode(Value!);
         }
 
         public static bool operator ==(Box<T> valueA, Box<T> valueB)
diff --git a/src/MagicOnion.Abstractions/MagicOnion.Abstractions.csproj b/src/MagicOnion.Abstractions/MagicOnion.Abstractions.csproj
index 748f240b8..bc66af320 100644
--- a/src/MagicOnion.Abstractions/MagicOnion.Abstractions.csproj
+++ b/src/MagicOnion.Abstractions/MagicOnion.Abstractions.csproj
@@ -1,10 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
 
     <LangVersion>$(_LangVersionUnityBaseline)</LangVersion>
     <Nullable>enable</Nullable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0'))">true</IsTrimmable>
 
     <PackageId>MagicOnion.Abstractions</PackageId>
     <Description>MagicOnion interfaces and abstractions for server and client.
diff --git a/src/MagicOnion.Abstractions/PublicAPI.Shipped.txt b/src/MagicOnion.Abstractions/PublicAPI.Shipped.txt
index 31e7e16d6..c7261b555 100644
--- a/src/MagicOnion.Abstractions/PublicAPI.Shipped.txt
+++ b/src/MagicOnion.Abstractions/PublicAPI.Shipped.txt
@@ -90,7 +90,7 @@ MagicOnion.IgnoreAttribute
 MagicOnion.IgnoreAttribute.IgnoreAttribute() -> void
 MagicOnion.Internal.Box
 MagicOnion.Internal.Box<T>
-MagicOnion.Internal.Box<T>.Equals(MagicOnion.Internal.Box<T>! other) -> bool
+MagicOnion.Internal.Box<T>.Equals(MagicOnion.Internal.Box<T>? other) -> bool
 MagicOnion.Internal.IAsyncClientStreamingCallWrapper<TRequest, TResponse>
 MagicOnion.Internal.IAsyncClientStreamingCallWrapper<TRequest, TResponse>.RequestStream.get -> Grpc.Core.IClientStreamWriter<TRequest>!
 MagicOnion.Internal.IAsyncClientStreamingCallWrapper<TRequest, TResponse>.ResponseAsync.get -> System.Threading.Tasks.Task<TResponse>!
@@ -155,7 +155,7 @@ MagicOnion.UnaryResult<TResponse>.UnaryResult() -> void
 MagicOnion.UnaryResult<TResponse>.UnaryResult(System.Threading.Tasks.Task<MagicOnion.Client.IResponseContext<TResponse>!>! response) -> void
 MagicOnion.UnaryResult<TResponse>.UnaryResult(System.Threading.Tasks.Task<TResponse>! rawTaskValue) -> void
 MagicOnion.UnaryResult<TResponse>.UnaryResult(TResponse rawValue) -> void
-override MagicOnion.Internal.Box<T>.Equals(object! obj) -> bool
+override MagicOnion.Internal.Box<T>.Equals(object? obj) -> bool
 override MagicOnion.Internal.Box<T>.GetHashCode() -> int
 readonly MagicOnion.DynamicArgumentTuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>.Item1 -> T1
 readonly MagicOnion.DynamicArgumentTuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>.Item10 -> T10
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Abstractions/Internal/Box.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Abstractions/Internal/Box.cs
index 3a0acc1a4..63b6db870 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Abstractions/Internal/Box.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Abstractions/Internal/Box.cs
@@ -18,21 +18,21 @@ internal Box(T value)
             Value = value;
         }
 
-        public bool Equals(Box<T> other)
+        public bool Equals(Box<T>? other)
         {
             if (ReferenceEquals(null, other)) return false;
             if (ReferenceEquals(this, other)) return true;
             return EqualityComparer<T>.Default.Equals(Value, other.Value);
         }
 
-        public override bool Equals(object obj)
+        public override bool Equals(object? obj)
         {
             return ReferenceEquals(this, obj) || obj is Box<T> other && Equals(other);
         }
 
         public override int GetHashCode()
         {
-            return EqualityComparer<T>.Default.GetHashCode(Value);
+            return EqualityComparer<T>.Default.GetHashCode(Value!);
         }
 
         public static bool operator ==(Box<T> valueA, Box<T> valueB)
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicClientAssemblyHolder.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicClientAssemblyHolder.cs
index 119ec5f69..3c0343c02 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicClientAssemblyHolder.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicClientAssemblyHolder.cs
@@ -1,7 +1,9 @@
+using System.Diagnostics.CodeAnalysis;
 using MagicOnion.Internal.Reflection;
 
 namespace MagicOnion.Client.DynamicClient
 {
+    [RequiresUnreferencedCode(nameof(DynamicClientAssemblyHolder) + " is incompatible with trimming and Native AOT.")]
 #if ENABLE_SAVE_ASSEMBLY
     public
 #else
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicClientBuilder.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicClientBuilder.cs
index 4e5193192..7be683746 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicClientBuilder.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicClientBuilder.cs
@@ -1,9 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using System.Reflection.Emit;
-using System.Text;
 using Grpc.Core;
 using MagicOnion.Client.Internal;
 using MagicOnion.Serialization;
@@ -20,6 +20,7 @@ protected static class KnownTypes
         }
     }
 
+    [RequiresUnreferencedCode(nameof(DynamicClientBuilder<T>) + " is incompatible with trimming and Native AOT.")]
     internal class DynamicClientBuilder<T> : DynamicClientBuilder
         where T : IService<T>
     {
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicMagicOnionClientFactoryProvider.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicMagicOnionClientFactoryProvider.cs
index fefc4c174..47a7d3d42 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicMagicOnionClientFactoryProvider.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicMagicOnionClientFactoryProvider.cs
@@ -18,6 +18,7 @@ public bool TryGetFactory<T>([NotNullWhen(true)] out MagicOnionClientFactoryDele
     /// <summary>
     /// Provides to get a MagicOnionClient factory of the specified service type. The provider is backed by DynamicMagicOnionClientBuilder.
     /// </summary>
+    [RequiresUnreferencedCode(nameof(DynamicMagicOnionClientFactoryProvider) + " is incompatible with trimming and Native AOT.")]
     public class DynamicMagicOnionClientFactoryProvider : IMagicOnionClientFactoryProvider
     {
         public static IMagicOnionClientFactoryProvider Instance { get; } = new DynamicMagicOnionClientFactoryProvider();
@@ -30,6 +31,7 @@ public bool TryGetFactory<T>([NotNullWhen(true)] out MagicOnionClientFactoryDele
             return true;
         }
 
+        [RequiresUnreferencedCode(nameof(DynamicMagicOnionClientFactoryProvider) + "." + nameof(Cache<T>) + " is incompatible with trimming and Native AOT.")]
         static class Cache<T> where T : IService<T>
         {
             public static readonly MagicOnionClientFactoryDelegate<T> Factory
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientBuilder.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientBuilder.cs
index 09d4d4355..9173e8f06 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientBuilder.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientBuilder.cs
@@ -6,6 +6,7 @@
 using MessagePack;
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using System.Reflection.Emit;
@@ -14,6 +15,7 @@
 
 namespace MagicOnion.Client.DynamicClient
 {
+    [RequiresUnreferencedCode(nameof(DynamicStreamingHubClientAssemblyHolder) + " is incompatible with trimming and Native AOT.")]
 #if ENABLE_SAVE_ASSEMBLY
     public
 #else
@@ -41,6 +43,7 @@ public static AssemblyBuilder Save()
 #endif
     }
 
+    [RequiresUnreferencedCode(nameof(DynamicStreamingHubClientBuilder<TStreamingHub, TReceiver>) + " is incompatible with trimming and Native AOT.")]
 #if ENABLE_SAVE_ASSEMBLY
     public
 #else
@@ -709,6 +712,7 @@ static void DefineMethodsFireAndForget(TypeBuilder typeBuilder, Type interfaceTy
             }
         }
 
+        [RequiresUnreferencedCode(nameof(MethodInfoCache) + " is incompatible with trimming and Native AOT.")]
         static class MethodInfoCache
         {
             // ReSharper disable StaticMemberInGenericType
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientFactoryProvider.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientFactoryProvider.cs
index 0f1d0c53a..d6ee35879 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientFactoryProvider.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientFactoryProvider.cs
@@ -15,6 +15,7 @@ public bool TryGetFactory<TStreamingHub, TReceiver>([NotNullWhen(true)] out Stre
         }
     }
 
+    [RequiresUnreferencedCode(nameof(DynamicStreamingHubClientFactoryProvider) + " is incompatible with trimming and Native AOT.")]
     public class DynamicStreamingHubClientFactoryProvider : IStreamingHubClientFactoryProvider
     {
         public static IStreamingHubClientFactoryProvider Instance { get; } = new DynamicStreamingHubClientFactoryProvider();
@@ -27,6 +28,7 @@ public bool TryGetFactory<TStreamingHub, TReceiver>([NotNullWhen(true)] out Stre
             return true;
         }
 
+        [RequiresUnreferencedCode(nameof(DynamicStreamingHubClientFactoryProvider) + "." + nameof(Cache<TStreamingHub, TReceiver>) + " is incompatible with trimming and Native AOT.")]
         static class Cache<TStreamingHub, TReceiver> where TStreamingHub : IStreamingHub<TStreamingHub, TReceiver>
         {
             public static readonly StreamingHubClientFactoryDelegate<TStreamingHub, TReceiver> Factory
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/RawMethodInvokerTypes.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/RawMethodInvokerTypes.cs
index 74499020b..80a85c9b3 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/RawMethodInvokerTypes.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/RawMethodInvokerTypes.cs
@@ -1,10 +1,11 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
-using Grpc.Core;
 using MagicOnion.Client.Internal;
 
 namespace MagicOnion.Client.DynamicClient
 {
+    [RequiresUnreferencedCode(nameof(RawMethodInvokerTypes) + " is incompatible with trimming and Native AOT.")]
     internal static class RawMethodInvokerTypes
     {
         static readonly MethodInfo create_RefType_RefType = typeof(RawMethodInvoker).GetMethod(nameof(RawMethodInvoker.Create_RefType_RefType), BindingFlags.Static | BindingFlags.Public)!;
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/ServiceClientDefinition.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/ServiceClientDefinition.cs
index 94b8c361d..8e4519d22 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/ServiceClientDefinition.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/DynamicClient/ServiceClientDefinition.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
@@ -9,6 +10,7 @@
 
 namespace MagicOnion.Client.DynamicClient
 {
+    [RequiresUnreferencedCode(nameof(ServiceClientDefinition) + " is incompatible with trimming and Native AOT.")]
     internal class ServiceClientDefinition
     {
         public Type ServiceInterfaceType { get; }
@@ -20,6 +22,7 @@ public ServiceClientDefinition(Type serviceInterfaceType, IReadOnlyList<MagicOni
             Methods = methods;
         }
 
+        [RequiresUnreferencedCode(nameof(MagicOnionServiceMethodInfo) + " is incompatible with trimming and Native AOT.")]
         public class MagicOnionServiceMethodInfo
         {
             public MethodType MethodType { get; }
@@ -69,7 +72,7 @@ public static MagicOnionServiceMethodInfo Create(Type serviceType, MethodInfo me
                 return method;
             }
 
-            private void Verify()
+            void Verify()
             {
                 switch (MethodType)
                 {
@@ -91,7 +94,7 @@ private void Verify()
                 }
             }
 
-            private static (MethodType MethodType, Type? RequestType, Type ResponseType) GetMethodTypeAndResponseTypeFromMethod(MethodInfo methodInfo)
+            static (MethodType MethodType, Type? RequestType, Type ResponseType) GetMethodTypeAndResponseTypeFromMethod(MethodInfo methodInfo)
             {
                 const string UnsupportedReturnTypeErrorMessage =
                     "The method of a service must return 'UnaryResult<T>', 'Task<ClientStreamingResult<TRequest, TResponse>>', 'Task<ServerStreamingResult<T>>' or 'DuplexStreamingResult<TRequest, TResponse>'.";
@@ -171,7 +174,7 @@ public static ServiceClientDefinition CreateFromType<T>()
             return new ServiceClientDefinition(typeof(T), GetServiceMethods(typeof(T)));
         }
         
-        private static IReadOnlyList<MagicOnionServiceMethodInfo> GetServiceMethods(Type serviceType)
+        static IReadOnlyList<MagicOnionServiceMethodInfo> GetServiceMethods(Type serviceType)
         {
             return serviceType
                 .GetInterfaces()
@@ -209,7 +212,7 @@ private static IReadOnlyList<MagicOnionServiceMethodInfo> GetServiceMethods(Type
         /// </summary>
         /// <param name="methodInfo"></param>
         /// <returns></returns>
-        private static Type GetRequestTypeFromMethod(MethodInfo methodInfo)
+        static Type GetRequestTypeFromMethod(MethodInfo methodInfo)
         {
             var parameterTypes = methodInfo.GetParameters().Select(x => x.ParameterType).ToArray();
             switch (parameterTypes.Length)
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/BroadcasterHelper.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/BroadcasterHelper.cs
index eab0c5c9d..f87114cb5 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/BroadcasterHelper.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/BroadcasterHelper.cs
@@ -1,11 +1,13 @@
 using MagicOnion.Server.Hubs;
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 
 namespace MagicOnion.Internal
 {
+    [RequiresUnreferencedCode("BroadcastHelper is incompatible with trimming.")]
     internal static class BroadcasterHelper
     {
         internal static Type[] DynamicArgumentTupleTypes { get; } = typeof(DynamicArgumentTuple<,>)
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/MagicOnionMarshallers.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/MagicOnionMarshallers.cs
index af9233361..33360672c 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/MagicOnionMarshallers.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/MagicOnionMarshallers.cs
@@ -2,6 +2,7 @@
 using MessagePack;
 using System;
 using System.Buffers;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 
@@ -10,13 +11,7 @@ namespace MagicOnion.Internal
     // invoke from dynamic methods so must be public
     internal static class MagicOnionMarshallers
     {
-        static readonly Type[] dynamicArgumentTupleTypes = typeof(DynamicArgumentTuple<,>).GetTypeInfo().Assembly
-            .GetTypes()
-            .Where(x => x.Name.StartsWith("DynamicArgumentTuple") && !x.Name.Contains("Formatter"))
-            .OrderBy(x => x.GetGenericArguments().Length)
-            .ToArray();
-
-        internal static Marshaller<StreamingHubPayload> StreamingHubMarshaller { get; } = new(
+        public static Marshaller<StreamingHubPayload> StreamingHubMarshaller { get; } = new(
             serializer: static (payload, context) =>
             {
                 context.SetPayloadLength(payload.Length);
@@ -32,7 +27,8 @@ internal static class MagicOnionMarshallers
             }
         );
 
-        internal static Type CreateRequestType(ParameterInfo[] parameters)
+        [RequiresUnreferencedCode(nameof(MagicOnionMarshallers) + "." + nameof(CreateRequestType) + " is incompatible with trimming and Native AOT.")]
+        public static Type CreateRequestType(ParameterInfo[] parameters)
         {
             if (parameters.Length == 0)
             {
@@ -50,18 +46,29 @@ internal static Type CreateRequestType(ParameterInfo[] parameters)
             else
             {
                 // start from T2
-                var tupleTypeBase = dynamicArgumentTupleTypes[parameters.Length - 2];
+                var tupleTypeBase = DynamicArgumentTupleTypesCache.Types[parameters.Length - 2];
                 var t = tupleTypeBase.MakeGenericType(parameters.Select(x => x.ParameterType).ToArray());
                 return t;
             }
         }
 
+        [RequiresUnreferencedCode(nameof(MagicOnionMarshallers) + "." + nameof(InstantiateDynamicArgumentTuple) + " is incompatible with trimming and Native AOT.")]
         public static object InstantiateDynamicArgumentTuple(Type[] typeParameters, object[] arguments)
         {
             // start from T2
-            var tupleTypeBase = dynamicArgumentTupleTypes[arguments.Length - 2];
+            var tupleTypeBase = DynamicArgumentTupleTypesCache.Types[arguments.Length - 2];
             return Activator.CreateInstance(tupleTypeBase.MakeGenericType(typeParameters), arguments)!;
         }
+
+        [RequiresUnreferencedCode(nameof(DynamicArgumentTupleTypesCache) + " is incompatible with trimming and Native AOT.")]
+        static class DynamicArgumentTupleTypesCache
+        {
+            public static readonly Type[] Types = typeof(DynamicArgumentTuple<,>).GetTypeInfo().Assembly
+                .GetTypes()
+                .Where(x => x.Name.StartsWith("DynamicArgumentTuple") && !x.Name.Contains("Formatter"))
+                .OrderBy(x => x.GetGenericArguments().Length)
+                .ToArray();
+        }
     }
 
 }
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil.meta b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil.meta
new file mode 100644
index 000000000..1fcc953fc
--- /dev/null
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: d0740739ff0548f42abb6937a771bcfd
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/RequiresUnreferencedCodeAttribute.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/RequiresUnreferencedCodeAttribute.cs
new file mode 100644
index 000000000..a59a86c95
--- /dev/null
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/RequiresUnreferencedCodeAttribute.cs
@@ -0,0 +1,20 @@
+#if !NET6_0_OR_GREATER
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Class, Inherited = false)]
+    internal class RequiresUnreferencedCodeAttribute : Attribute
+    {
+        public string Message { get; }
+        public string? Url { get; }
+
+        public RequiresUnreferencedCodeAttribute(string message)
+        {
+            Message = message;
+        }
+    }
+}
+#endif
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/RequiresUnreferencedCodeAttribute.cs.meta b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/RequiresUnreferencedCodeAttribute.cs.meta
new file mode 100644
index 000000000..b87290575
--- /dev/null
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/RequiresUnreferencedCodeAttribute.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 1d0a558474e947549a1d7c4f4455c44c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/UnconditionalSuppressMessageAttribute.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/UnconditionalSuppressMessageAttribute.cs
new file mode 100644
index 000000000..4e5dff129
--- /dev/null
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/UnconditionalSuppressMessageAttribute.cs
@@ -0,0 +1,25 @@
+#if !NET6_0_OR_GREATER
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    [AttributeUsage(AttributeTargets.All, Inherited = false, AllowMultiple = true)]
+    internal class UnconditionalSuppressMessageAttribute : Attribute
+    {
+        public string Category { get; }
+        public string CheckId { get; }
+        public string? Scope { get; set; }
+        public string? Target { get; set; }
+        public string? Justification { get; set; }
+        public string? MessageId { get; set; }
+
+        public UnconditionalSuppressMessageAttribute(string category, string checkId)
+        {
+            Category = category;
+            CheckId = checkId;
+        }
+    }
+}
+#endif
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/UnconditionalSuppressMessageAttribute.cs.meta b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/UnconditionalSuppressMessageAttribute.cs.meta
new file mode 100644
index 000000000..5a26a820d
--- /dev/null
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Polyfil/UnconditionalSuppressMessageAttribute.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 337e745c02c4896408b607de73abe11b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Reflection/DynamicAssembly.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Reflection/DynamicAssembly.cs
index 83972a8c8..6914ec17f 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Reflection/DynamicAssembly.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal.Shared/Reflection/DynamicAssembly.cs
@@ -1,10 +1,12 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
 using System.Reflection.Emit;
 using System.Runtime.CompilerServices;
 
 namespace MagicOnion.Internal.Reflection
 {
+    [RequiresUnreferencedCode(nameof(DynamicAssembly) + " is incompatible with trimming and Native AOT.")]
 #if ENABLE_SAVE_ASSEMBLY
     public
 #else
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal/DictionaryExtensions.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal/DictionaryExtensions.cs
index ca34940c8..6ff83e76a 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal/DictionaryExtensions.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/Internal/DictionaryExtensions.cs
@@ -1,3 +1,4 @@
+#if NETSTANDARD2_0
 using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
@@ -8,7 +9,6 @@ namespace System.Collections.Generic
 {
     internal static class DictionaryExtensions
     {
-#if NETSTANDARD2_0
         public static bool Remove<TKey, TValue>(this IDictionary<TKey, TValue> dict, TKey key, [NotNullWhen(true)] out TValue? value)
         {
             if (dict.TryGetValue(key, out var v))
@@ -21,6 +21,6 @@ public static bool Remove<TKey, TValue>(this IDictionary<TKey, TValue> dict, TKe
             value = default;
             return false;
         }
-#endif
     }
 }
+#endif
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/MagicOnionClientFactoryProvider.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/MagicOnionClientFactoryProvider.cs
index 345cb1f08..10f1365b1 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/MagicOnionClientFactoryProvider.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/MagicOnionClientFactoryProvider.cs
@@ -9,6 +9,7 @@ namespace MagicOnion.Client
     /// <summary>
     /// Provides to get a MagicOnionClient factory of the specified service type.
     /// </summary>
+    [UnconditionalSuppressMessage("Trimming", "IL2026", Justification = "ClientFactoryProvider is resolved at runtime.")]
     public static class MagicOnionClientFactoryProvider
     {
         /// <summary>
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/StreamingHubClientFactoryProvider.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/StreamingHubClientFactoryProvider.cs
index 50f7be83c..63ef1ba01 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/StreamingHubClientFactoryProvider.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Client/StreamingHubClientFactoryProvider.cs
@@ -9,6 +9,7 @@ namespace MagicOnion.Client
     /// <summary>
     /// Provides to get a StreamingHubClient factory of the specified service type.
     /// </summary>
+    [UnconditionalSuppressMessage("Trimming", "IL2026", Justification = "ClientFactoryProvider is resolved at runtime.")]
     public static class StreamingHubClientFactoryProvider
     {
         /// <summary>
diff --git a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Serialization.MessagePack/MessagePackMagicOnionSerializerProvider.cs b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Serialization.MessagePack/MessagePackMagicOnionSerializerProvider.cs
index 76e0e9411..298bb14cc 100644
--- a/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Serialization.MessagePack/MessagePackMagicOnionSerializerProvider.cs
+++ b/src/MagicOnion.Client.Unity/Assets/Scripts/MagicOnion/MagicOnion.Serialization.MessagePack/MessagePackMagicOnionSerializerProvider.cs
@@ -2,6 +2,7 @@
 using System.Buffers;
 using System.Linq;
 using System.Reflection;
+using System.Runtime.CompilerServices;
 using Grpc.Core;
 using MessagePack;
 using MessagePack.Formatters;
@@ -42,26 +43,43 @@ public MessagePackMagicOnionSerializerProvider WithEnableFallback(bool enableFal
             return new MessagePackMagicOnionSerializerProvider(SerializerOptions, enableFallback);
         }
 
+
+#if NET6_0_OR_GREATER
+        [System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("Trimming", "IL2026", Justification = "ClientFactoryProvider is resolved at runtime.")]
+#endif
         public IMagicOnionSerializer Create(MethodType methodType, MethodInfo? methodInfo)
         {
             var serializerOptions = EnableFallback && methodInfo != null ? WrapFallbackResolverIfNeeded(methodInfo.GetParameters()) : SerializerOptions;
             return new MessagePackMagicOnionSerializer(serializerOptions);
         }
 
-        static readonly Type[] dynamicArgumentTupleTypes = typeof(DynamicArgumentTuple<,>).GetTypeInfo().Assembly
-            .GetTypes()
-            .Where(x => x.Name.StartsWith("DynamicArgumentTuple") && !x.Name.Contains("Formatter"))
-            .OrderBy(x => x.GetGenericArguments().Length)
-            .ToArray();
+#if NET6_0_OR_GREATER
+        [System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode(nameof(DynamicArgumentTupleTypeCache) + " is incompatible with trimming and Native AOT.")]
+#endif
+        static class DynamicArgumentTupleTypeCache
+        {
+            public static readonly Type[] Types = typeof(DynamicArgumentTuple<,>).GetTypeInfo().Assembly
+                .GetTypes()
+                .Where(x => x.Name.StartsWith("DynamicArgumentTuple") && !x.Name.Contains("Formatter"))
+                .OrderBy(x => x.GetGenericArguments().Length)
+                .ToArray();
+
+            public static readonly Type[] FormatterTypes = typeof(DynamicArgumentTupleFormatter<,,>).GetTypeInfo().Assembly
+                .GetTypes()
+                .Where(x => x.Name.StartsWith("DynamicArgumentTupleFormatter"))
+                .OrderBy(x => x.GetGenericArguments().Length)
+                .ToArray();
+        }
 
-        static readonly Type[] dynamicArgumentTupleFormatterTypes = typeof(DynamicArgumentTupleFormatter<,,>).GetTypeInfo().Assembly
-            .GetTypes()
-            .Where(x => x.Name.StartsWith("DynamicArgumentTupleFormatter"))
-            .OrderBy(x => x.GetGenericArguments().Length)
-            .ToArray();
 
+#if NET6_0_OR_GREATER
+        [System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode(nameof(DynamicArgumentTupleTypeCache) + " is incompatible with trimming and Native AOT.")]
+#endif
         MessagePackSerializerOptions WrapFallbackResolverIfNeeded(ParameterInfo[] parameters)
         {
+#if !NETSTANDARD2_0
+            if (!RuntimeFeature.IsDynamicCodeSupported) throw new NotSupportedException("When running with AOT runtime, DynamicArgumentTupleFormatter does not support fallback resolver fro optional parameters.");
+#endif
             // If the method has no parameter or one parameter, we don't need to create fallback resolver for optional parameters.
             if (parameters.Length < 2)
             {
@@ -69,8 +87,8 @@ MessagePackSerializerOptions WrapFallbackResolverIfNeeded(ParameterInfo[] parame
             }
 
             // start from T2
-            var tupleTypeBase = dynamicArgumentTupleTypes[parameters.Length - 2];
-            var formatterTypeBase = dynamicArgumentTupleFormatterTypes[parameters.Length - 2];
+            var tupleTypeBase = DynamicArgumentTupleTypeCache.Types[parameters.Length - 2];
+            var formatterTypeBase = DynamicArgumentTupleTypeCache.FormatterTypes[parameters.Length - 2];
 
             var t = tupleTypeBase.MakeGenericType(parameters.Select(x => x.ParameterType).ToArray());
             var formatterType = formatterTypeBase.MakeGenericType(parameters.Select(x => x.ParameterType).ToArray());
diff --git a/src/MagicOnion.Client/DynamicClient/DynamicClientAssemblyHolder.cs b/src/MagicOnion.Client/DynamicClient/DynamicClientAssemblyHolder.cs
index 119ec5f69..3c0343c02 100644
--- a/src/MagicOnion.Client/DynamicClient/DynamicClientAssemblyHolder.cs
+++ b/src/MagicOnion.Client/DynamicClient/DynamicClientAssemblyHolder.cs
@@ -1,7 +1,9 @@
+using System.Diagnostics.CodeAnalysis;
 using MagicOnion.Internal.Reflection;
 
 namespace MagicOnion.Client.DynamicClient
 {
+    [RequiresUnreferencedCode(nameof(DynamicClientAssemblyHolder) + " is incompatible with trimming and Native AOT.")]
 #if ENABLE_SAVE_ASSEMBLY
     public
 #else
diff --git a/src/MagicOnion.Client/DynamicClient/DynamicClientBuilder.cs b/src/MagicOnion.Client/DynamicClient/DynamicClientBuilder.cs
index 4e5193192..7be683746 100644
--- a/src/MagicOnion.Client/DynamicClient/DynamicClientBuilder.cs
+++ b/src/MagicOnion.Client/DynamicClient/DynamicClientBuilder.cs
@@ -1,9 +1,9 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using System.Reflection.Emit;
-using System.Text;
 using Grpc.Core;
 using MagicOnion.Client.Internal;
 using MagicOnion.Serialization;
@@ -20,6 +20,7 @@ protected static class KnownTypes
         }
     }
 
+    [RequiresUnreferencedCode(nameof(DynamicClientBuilder<T>) + " is incompatible with trimming and Native AOT.")]
     internal class DynamicClientBuilder<T> : DynamicClientBuilder
         where T : IService<T>
     {
diff --git a/src/MagicOnion.Client/DynamicClient/DynamicMagicOnionClientFactoryProvider.cs b/src/MagicOnion.Client/DynamicClient/DynamicMagicOnionClientFactoryProvider.cs
index fefc4c174..47a7d3d42 100644
--- a/src/MagicOnion.Client/DynamicClient/DynamicMagicOnionClientFactoryProvider.cs
+++ b/src/MagicOnion.Client/DynamicClient/DynamicMagicOnionClientFactoryProvider.cs
@@ -18,6 +18,7 @@ public bool TryGetFactory<T>([NotNullWhen(true)] out MagicOnionClientFactoryDele
     /// <summary>
     /// Provides to get a MagicOnionClient factory of the specified service type. The provider is backed by DynamicMagicOnionClientBuilder.
     /// </summary>
+    [RequiresUnreferencedCode(nameof(DynamicMagicOnionClientFactoryProvider) + " is incompatible with trimming and Native AOT.")]
     public class DynamicMagicOnionClientFactoryProvider : IMagicOnionClientFactoryProvider
     {
         public static IMagicOnionClientFactoryProvider Instance { get; } = new DynamicMagicOnionClientFactoryProvider();
@@ -30,6 +31,7 @@ public bool TryGetFactory<T>([NotNullWhen(true)] out MagicOnionClientFactoryDele
             return true;
         }
 
+        [RequiresUnreferencedCode(nameof(DynamicMagicOnionClientFactoryProvider) + "." + nameof(Cache<T>) + " is incompatible with trimming and Native AOT.")]
         static class Cache<T> where T : IService<T>
         {
             public static readonly MagicOnionClientFactoryDelegate<T> Factory
diff --git a/src/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientBuilder.cs b/src/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientBuilder.cs
index 09d4d4355..9173e8f06 100644
--- a/src/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientBuilder.cs
+++ b/src/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientBuilder.cs
@@ -6,6 +6,7 @@
 using MessagePack;
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using System.Reflection.Emit;
@@ -14,6 +15,7 @@
 
 namespace MagicOnion.Client.DynamicClient
 {
+    [RequiresUnreferencedCode(nameof(DynamicStreamingHubClientAssemblyHolder) + " is incompatible with trimming and Native AOT.")]
 #if ENABLE_SAVE_ASSEMBLY
     public
 #else
@@ -41,6 +43,7 @@ public static AssemblyBuilder Save()
 #endif
     }
 
+    [RequiresUnreferencedCode(nameof(DynamicStreamingHubClientBuilder<TStreamingHub, TReceiver>) + " is incompatible with trimming and Native AOT.")]
 #if ENABLE_SAVE_ASSEMBLY
     public
 #else
@@ -709,6 +712,7 @@ static void DefineMethodsFireAndForget(TypeBuilder typeBuilder, Type interfaceTy
             }
         }
 
+        [RequiresUnreferencedCode(nameof(MethodInfoCache) + " is incompatible with trimming and Native AOT.")]
         static class MethodInfoCache
         {
             // ReSharper disable StaticMemberInGenericType
diff --git a/src/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientFactoryProvider.cs b/src/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientFactoryProvider.cs
index 0f1d0c53a..d6ee35879 100644
--- a/src/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientFactoryProvider.cs
+++ b/src/MagicOnion.Client/DynamicClient/DynamicStreamingHubClientFactoryProvider.cs
@@ -15,6 +15,7 @@ public bool TryGetFactory<TStreamingHub, TReceiver>([NotNullWhen(true)] out Stre
         }
     }
 
+    [RequiresUnreferencedCode(nameof(DynamicStreamingHubClientFactoryProvider) + " is incompatible with trimming and Native AOT.")]
     public class DynamicStreamingHubClientFactoryProvider : IStreamingHubClientFactoryProvider
     {
         public static IStreamingHubClientFactoryProvider Instance { get; } = new DynamicStreamingHubClientFactoryProvider();
@@ -27,6 +28,7 @@ public bool TryGetFactory<TStreamingHub, TReceiver>([NotNullWhen(true)] out Stre
             return true;
         }
 
+        [RequiresUnreferencedCode(nameof(DynamicStreamingHubClientFactoryProvider) + "." + nameof(Cache<TStreamingHub, TReceiver>) + " is incompatible with trimming and Native AOT.")]
         static class Cache<TStreamingHub, TReceiver> where TStreamingHub : IStreamingHub<TStreamingHub, TReceiver>
         {
             public static readonly StreamingHubClientFactoryDelegate<TStreamingHub, TReceiver> Factory
diff --git a/src/MagicOnion.Client/DynamicClient/RawMethodInvokerTypes.cs b/src/MagicOnion.Client/DynamicClient/RawMethodInvokerTypes.cs
index 74499020b..80a85c9b3 100644
--- a/src/MagicOnion.Client/DynamicClient/RawMethodInvokerTypes.cs
+++ b/src/MagicOnion.Client/DynamicClient/RawMethodInvokerTypes.cs
@@ -1,10 +1,11 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
-using Grpc.Core;
 using MagicOnion.Client.Internal;
 
 namespace MagicOnion.Client.DynamicClient
 {
+    [RequiresUnreferencedCode(nameof(RawMethodInvokerTypes) + " is incompatible with trimming and Native AOT.")]
     internal static class RawMethodInvokerTypes
     {
         static readonly MethodInfo create_RefType_RefType = typeof(RawMethodInvoker).GetMethod(nameof(RawMethodInvoker.Create_RefType_RefType), BindingFlags.Static | BindingFlags.Public)!;
diff --git a/src/MagicOnion.Client/DynamicClient/ServiceClientDefinition.cs b/src/MagicOnion.Client/DynamicClient/ServiceClientDefinition.cs
index 94b8c361d..8e4519d22 100644
--- a/src/MagicOnion.Client/DynamicClient/ServiceClientDefinition.cs
+++ b/src/MagicOnion.Client/DynamicClient/ServiceClientDefinition.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
@@ -9,6 +10,7 @@
 
 namespace MagicOnion.Client.DynamicClient
 {
+    [RequiresUnreferencedCode(nameof(ServiceClientDefinition) + " is incompatible with trimming and Native AOT.")]
     internal class ServiceClientDefinition
     {
         public Type ServiceInterfaceType { get; }
@@ -20,6 +22,7 @@ public ServiceClientDefinition(Type serviceInterfaceType, IReadOnlyList<MagicOni
             Methods = methods;
         }
 
+        [RequiresUnreferencedCode(nameof(MagicOnionServiceMethodInfo) + " is incompatible with trimming and Native AOT.")]
         public class MagicOnionServiceMethodInfo
         {
             public MethodType MethodType { get; }
@@ -69,7 +72,7 @@ public static MagicOnionServiceMethodInfo Create(Type serviceType, MethodInfo me
                 return method;
             }
 
-            private void Verify()
+            void Verify()
             {
                 switch (MethodType)
                 {
@@ -91,7 +94,7 @@ private void Verify()
                 }
             }
 
-            private static (MethodType MethodType, Type? RequestType, Type ResponseType) GetMethodTypeAndResponseTypeFromMethod(MethodInfo methodInfo)
+            static (MethodType MethodType, Type? RequestType, Type ResponseType) GetMethodTypeAndResponseTypeFromMethod(MethodInfo methodInfo)
             {
                 const string UnsupportedReturnTypeErrorMessage =
                     "The method of a service must return 'UnaryResult<T>', 'Task<ClientStreamingResult<TRequest, TResponse>>', 'Task<ServerStreamingResult<T>>' or 'DuplexStreamingResult<TRequest, TResponse>'.";
@@ -171,7 +174,7 @@ public static ServiceClientDefinition CreateFromType<T>()
             return new ServiceClientDefinition(typeof(T), GetServiceMethods(typeof(T)));
         }
         
-        private static IReadOnlyList<MagicOnionServiceMethodInfo> GetServiceMethods(Type serviceType)
+        static IReadOnlyList<MagicOnionServiceMethodInfo> GetServiceMethods(Type serviceType)
         {
             return serviceType
                 .GetInterfaces()
@@ -209,7 +212,7 @@ private static IReadOnlyList<MagicOnionServiceMethodInfo> GetServiceMethods(Type
         /// </summary>
         /// <param name="methodInfo"></param>
         /// <returns></returns>
-        private static Type GetRequestTypeFromMethod(MethodInfo methodInfo)
+        static Type GetRequestTypeFromMethod(MethodInfo methodInfo)
         {
             var parameterTypes = methodInfo.GetParameters().Select(x => x.ParameterType).ToArray();
             switch (parameterTypes.Length)
diff --git a/src/MagicOnion.Client/Internal/DictionaryExtensions.cs b/src/MagicOnion.Client/Internal/DictionaryExtensions.cs
index ca34940c8..6ff83e76a 100644
--- a/src/MagicOnion.Client/Internal/DictionaryExtensions.cs
+++ b/src/MagicOnion.Client/Internal/DictionaryExtensions.cs
@@ -1,3 +1,4 @@
+#if NETSTANDARD2_0
 using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
@@ -8,7 +9,6 @@ namespace System.Collections.Generic
 {
     internal static class DictionaryExtensions
     {
-#if NETSTANDARD2_0
         public static bool Remove<TKey, TValue>(this IDictionary<TKey, TValue> dict, TKey key, [NotNullWhen(true)] out TValue? value)
         {
             if (dict.TryGetValue(key, out var v))
@@ -21,6 +21,6 @@ public static bool Remove<TKey, TValue>(this IDictionary<TKey, TValue> dict, TKe
             value = default;
             return false;
         }
-#endif
     }
 }
+#endif
diff --git a/src/MagicOnion.Client/MagicOnion.Client.csproj b/src/MagicOnion.Client/MagicOnion.Client.csproj
index 4afd3dd60..b62cda061 100644
--- a/src/MagicOnion.Client/MagicOnion.Client.csproj
+++ b/src/MagicOnion.Client/MagicOnion.Client.csproj
@@ -5,6 +5,7 @@
 
     <LangVersion>$(_LangVersionUnityBaseline)</LangVersion>
     <Nullable>enable</Nullable>
+    <IsTrimmable>true</IsTrimmable>
 
     <!-- NuGet -->
     <PackageId>MagicOnion.Client</PackageId>
diff --git a/src/MagicOnion.Client/MagicOnionClientFactoryProvider.cs b/src/MagicOnion.Client/MagicOnionClientFactoryProvider.cs
index 345cb1f08..10f1365b1 100644
--- a/src/MagicOnion.Client/MagicOnionClientFactoryProvider.cs
+++ b/src/MagicOnion.Client/MagicOnionClientFactoryProvider.cs
@@ -9,6 +9,7 @@ namespace MagicOnion.Client
     /// <summary>
     /// Provides to get a MagicOnionClient factory of the specified service type.
     /// </summary>
+    [UnconditionalSuppressMessage("Trimming", "IL2026", Justification = "ClientFactoryProvider is resolved at runtime.")]
     public static class MagicOnionClientFactoryProvider
     {
         /// <summary>
diff --git a/src/MagicOnion.Client/StreamingHubClientFactoryProvider.cs b/src/MagicOnion.Client/StreamingHubClientFactoryProvider.cs
index 50f7be83c..63ef1ba01 100644
--- a/src/MagicOnion.Client/StreamingHubClientFactoryProvider.cs
+++ b/src/MagicOnion.Client/StreamingHubClientFactoryProvider.cs
@@ -9,6 +9,7 @@ namespace MagicOnion.Client
     /// <summary>
     /// Provides to get a StreamingHubClient factory of the specified service type.
     /// </summary>
+    [UnconditionalSuppressMessage("Trimming", "IL2026", Justification = "ClientFactoryProvider is resolved at runtime.")]
     public static class StreamingHubClientFactoryProvider
     {
         /// <summary>
diff --git a/src/MagicOnion.Internal/BroadcasterHelper.cs b/src/MagicOnion.Internal/BroadcasterHelper.cs
index eab0c5c9d..f87114cb5 100644
--- a/src/MagicOnion.Internal/BroadcasterHelper.cs
+++ b/src/MagicOnion.Internal/BroadcasterHelper.cs
@@ -1,11 +1,13 @@
 using MagicOnion.Server.Hubs;
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 
 namespace MagicOnion.Internal
 {
+    [RequiresUnreferencedCode("BroadcastHelper is incompatible with trimming.")]
     internal static class BroadcasterHelper
     {
         internal static Type[] DynamicArgumentTupleTypes { get; } = typeof(DynamicArgumentTuple<,>)
diff --git a/src/MagicOnion.Internal/MagicOnion.Internal.csproj b/src/MagicOnion.Internal/MagicOnion.Internal.csproj
index e6ab71734..fc4b60c88 100644
--- a/src/MagicOnion.Internal/MagicOnion.Internal.csproj
+++ b/src/MagicOnion.Internal/MagicOnion.Internal.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net6.0;net8.0</TargetFrameworks>
diff --git a/src/MagicOnion.Internal/MagicOnionMarshallers.cs b/src/MagicOnion.Internal/MagicOnionMarshallers.cs
index af9233361..33360672c 100644
--- a/src/MagicOnion.Internal/MagicOnionMarshallers.cs
+++ b/src/MagicOnion.Internal/MagicOnionMarshallers.cs
@@ -2,6 +2,7 @@
 using MessagePack;
 using System;
 using System.Buffers;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Reflection;
 
@@ -10,13 +11,7 @@ namespace MagicOnion.Internal
     // invoke from dynamic methods so must be public
     internal static class MagicOnionMarshallers
     {
-        static readonly Type[] dynamicArgumentTupleTypes = typeof(DynamicArgumentTuple<,>).GetTypeInfo().Assembly
-            .GetTypes()
-            .Where(x => x.Name.StartsWith("DynamicArgumentTuple") && !x.Name.Contains("Formatter"))
-            .OrderBy(x => x.GetGenericArguments().Length)
-            .ToArray();
-
-        internal static Marshaller<StreamingHubPayload> StreamingHubMarshaller { get; } = new(
+        public static Marshaller<StreamingHubPayload> StreamingHubMarshaller { get; } = new(
             serializer: static (payload, context) =>
             {
                 context.SetPayloadLength(payload.Length);
@@ -32,7 +27,8 @@ internal static class MagicOnionMarshallers
             }
         );
 
-        internal static Type CreateRequestType(ParameterInfo[] parameters)
+        [RequiresUnreferencedCode(nameof(MagicOnionMarshallers) + "." + nameof(CreateRequestType) + " is incompatible with trimming and Native AOT.")]
+        public static Type CreateRequestType(ParameterInfo[] parameters)
         {
             if (parameters.Length == 0)
             {
@@ -50,18 +46,29 @@ internal static Type CreateRequestType(ParameterInfo[] parameters)
             else
             {
                 // start from T2
-                var tupleTypeBase = dynamicArgumentTupleTypes[parameters.Length - 2];
+                var tupleTypeBase = DynamicArgumentTupleTypesCache.Types[parameters.Length - 2];
                 var t = tupleTypeBase.MakeGenericType(parameters.Select(x => x.ParameterType).ToArray());
                 return t;
             }
         }
 
+        [RequiresUnreferencedCode(nameof(MagicOnionMarshallers) + "." + nameof(InstantiateDynamicArgumentTuple) + " is incompatible with trimming and Native AOT.")]
         public static object InstantiateDynamicArgumentTuple(Type[] typeParameters, object[] arguments)
         {
             // start from T2
-            var tupleTypeBase = dynamicArgumentTupleTypes[arguments.Length - 2];
+            var tupleTypeBase = DynamicArgumentTupleTypesCache.Types[arguments.Length - 2];
             return Activator.CreateInstance(tupleTypeBase.MakeGenericType(typeParameters), arguments)!;
         }
+
+        [RequiresUnreferencedCode(nameof(DynamicArgumentTupleTypesCache) + " is incompatible with trimming and Native AOT.")]
+        static class DynamicArgumentTupleTypesCache
+        {
+            public static readonly Type[] Types = typeof(DynamicArgumentTuple<,>).GetTypeInfo().Assembly
+                .GetTypes()
+                .Where(x => x.Name.StartsWith("DynamicArgumentTuple") && !x.Name.Contains("Formatter"))
+                .OrderBy(x => x.GetGenericArguments().Length)
+                .ToArray();
+        }
     }
 
 }
diff --git a/src/MagicOnion.Internal/Polyfil/RequiresUnreferencedCodeAttribute.cs b/src/MagicOnion.Internal/Polyfil/RequiresUnreferencedCodeAttribute.cs
new file mode 100644
index 000000000..a59a86c95
--- /dev/null
+++ b/src/MagicOnion.Internal/Polyfil/RequiresUnreferencedCodeAttribute.cs
@@ -0,0 +1,20 @@
+#if !NET6_0_OR_GREATER
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Class, Inherited = false)]
+    internal class RequiresUnreferencedCodeAttribute : Attribute
+    {
+        public string Message { get; }
+        public string? Url { get; }
+
+        public RequiresUnreferencedCodeAttribute(string message)
+        {
+            Message = message;
+        }
+    }
+}
+#endif
diff --git a/src/MagicOnion.Internal/Polyfil/UnconditionalSuppressMessageAttribute.cs b/src/MagicOnion.Internal/Polyfil/UnconditionalSuppressMessageAttribute.cs
new file mode 100644
index 000000000..4e5dff129
--- /dev/null
+++ b/src/MagicOnion.Internal/Polyfil/UnconditionalSuppressMessageAttribute.cs
@@ -0,0 +1,25 @@
+#if !NET6_0_OR_GREATER
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace System.Diagnostics.CodeAnalysis
+{
+    [AttributeUsage(AttributeTargets.All, Inherited = false, AllowMultiple = true)]
+    internal class UnconditionalSuppressMessageAttribute : Attribute
+    {
+        public string Category { get; }
+        public string CheckId { get; }
+        public string? Scope { get; set; }
+        public string? Target { get; set; }
+        public string? Justification { get; set; }
+        public string? MessageId { get; set; }
+
+        public UnconditionalSuppressMessageAttribute(string category, string checkId)
+        {
+            Category = category;
+            CheckId = checkId;
+        }
+    }
+}
+#endif
diff --git a/src/MagicOnion.Internal/Reflection/DynamicAssembly.cs b/src/MagicOnion.Internal/Reflection/DynamicAssembly.cs
index 83972a8c8..6914ec17f 100644
--- a/src/MagicOnion.Internal/Reflection/DynamicAssembly.cs
+++ b/src/MagicOnion.Internal/Reflection/DynamicAssembly.cs
@@ -1,10 +1,12 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
 using System.Reflection.Emit;
 using System.Runtime.CompilerServices;
 
 namespace MagicOnion.Internal.Reflection
 {
+    [RequiresUnreferencedCode(nameof(DynamicAssembly) + " is incompatible with trimming and Native AOT.")]
 #if ENABLE_SAVE_ASSEMBLY
     public
 #else
diff --git a/src/MagicOnion.Serialization.MessagePack/MagicOnion.Serialization.MessagePack.csproj b/src/MagicOnion.Serialization.MessagePack/MagicOnion.Serialization.MessagePack.csproj
index 1f602aaa5..4ec87bb50 100644
--- a/src/MagicOnion.Serialization.MessagePack/MagicOnion.Serialization.MessagePack.csproj
+++ b/src/MagicOnion.Serialization.MessagePack/MagicOnion.Serialization.MessagePack.csproj
@@ -2,10 +2,11 @@
 
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
 
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
+    <IsTrimmable Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0'))">true</IsTrimmable>
 
     <!-- NuGet -->
     <PackageId>MagicOnion.Serialization.MessagePack</PackageId>
diff --git a/src/MagicOnion.Serialization.MessagePack/MessagePackMagicOnionSerializerProvider.cs b/src/MagicOnion.Serialization.MessagePack/MessagePackMagicOnionSerializerProvider.cs
index 76e0e9411..298bb14cc 100644
--- a/src/MagicOnion.Serialization.MessagePack/MessagePackMagicOnionSerializerProvider.cs
+++ b/src/MagicOnion.Serialization.MessagePack/MessagePackMagicOnionSerializerProvider.cs
@@ -2,6 +2,7 @@
 using System.Buffers;
 using System.Linq;
 using System.Reflection;
+using System.Runtime.CompilerServices;
 using Grpc.Core;
 using MessagePack;
 using MessagePack.Formatters;
@@ -42,26 +43,43 @@ public MessagePackMagicOnionSerializerProvider WithEnableFallback(bool enableFal
             return new MessagePackMagicOnionSerializerProvider(SerializerOptions, enableFallback);
         }
 
+
+#if NET6_0_OR_GREATER
+        [System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("Trimming", "IL2026", Justification = "ClientFactoryProvider is resolved at runtime.")]
+#endif
         public IMagicOnionSerializer Create(MethodType methodType, MethodInfo? methodInfo)
         {
             var serializerOptions = EnableFallback && methodInfo != null ? WrapFallbackResolverIfNeeded(methodInfo.GetParameters()) : SerializerOptions;
             return new MessagePackMagicOnionSerializer(serializerOptions);
         }
 
-        static readonly Type[] dynamicArgumentTupleTypes = typeof(DynamicArgumentTuple<,>).GetTypeInfo().Assembly
-            .GetTypes()
-            .Where(x => x.Name.StartsWith("DynamicArgumentTuple") && !x.Name.Contains("Formatter"))
-            .OrderBy(x => x.GetGenericArguments().Length)
-            .ToArray();
+#if NET6_0_OR_GREATER
+        [System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode(nameof(DynamicArgumentTupleTypeCache) + " is incompatible with trimming and Native AOT.")]
+#endif
+        static class DynamicArgumentTupleTypeCache
+        {
+            public static readonly Type[] Types = typeof(DynamicArgumentTuple<,>).GetTypeInfo().Assembly
+                .GetTypes()
+                .Where(x => x.Name.StartsWith("DynamicArgumentTuple") && !x.Name.Contains("Formatter"))
+                .OrderBy(x => x.GetGenericArguments().Length)
+                .ToArray();
+
+            public static readonly Type[] FormatterTypes = typeof(DynamicArgumentTupleFormatter<,,>).GetTypeInfo().Assembly
+                .GetTypes()
+                .Where(x => x.Name.StartsWith("DynamicArgumentTupleFormatter"))
+                .OrderBy(x => x.GetGenericArguments().Length)
+                .ToArray();
+        }
 
-        static readonly Type[] dynamicArgumentTupleFormatterTypes = typeof(DynamicArgumentTupleFormatter<,,>).GetTypeInfo().Assembly
-            .GetTypes()
-            .Where(x => x.Name.StartsWith("DynamicArgumentTupleFormatter"))
-            .OrderBy(x => x.GetGenericArguments().Length)
-            .ToArray();
 
+#if NET6_0_OR_GREATER
+        [System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode(nameof(DynamicArgumentTupleTypeCache) + " is incompatible with trimming and Native AOT.")]
+#endif
         MessagePackSerializerOptions WrapFallbackResolverIfNeeded(ParameterInfo[] parameters)
         {
+#if !NETSTANDARD2_0
+            if (!RuntimeFeature.IsDynamicCodeSupported) throw new NotSupportedException("When running with AOT runtime, DynamicArgumentTupleFormatter does not support fallback resolver fro optional parameters.");
+#endif
             // If the method has no parameter or one parameter, we don't need to create fallback resolver for optional parameters.
             if (parameters.Length < 2)
             {
@@ -69,8 +87,8 @@ MessagePackSerializerOptions WrapFallbackResolverIfNeeded(ParameterInfo[] parame
             }
 
             // start from T2
-            var tupleTypeBase = dynamicArgumentTupleTypes[parameters.Length - 2];
-            var formatterTypeBase = dynamicArgumentTupleFormatterTypes[parameters.Length - 2];
+            var tupleTypeBase = DynamicArgumentTupleTypeCache.Types[parameters.Length - 2];
+            var formatterTypeBase = DynamicArgumentTupleTypeCache.FormatterTypes[parameters.Length - 2];
 
             var t = tupleTypeBase.MakeGenericType(parameters.Select(x => x.ParameterType).ToArray());
             var formatterType = formatterTypeBase.MakeGenericType(parameters.Select(x => x.ParameterType).ToArray());
diff --git a/tests/MagicOnion.Client.Tests/StreamingHubClientHeartbeatManagerTest.cs b/tests/MagicOnion.Client.Tests/StreamingHubClientHeartbeatManagerTest.cs
index 16f00f3a1..8b705a8d5 100644
--- a/tests/MagicOnion.Client.Tests/StreamingHubClientHeartbeatManagerTest.cs
+++ b/tests/MagicOnion.Client.Tests/StreamingHubClientHeartbeatManagerTest.cs
@@ -281,9 +281,9 @@ public async Task Timeout_IntervalLongerThanTimeout_Keep()
         Assert.False(manager.TimeoutToken.IsCancellationRequested);
 
         // Respond to the first message. but it does not respond to subsequent messages.
-        manager.ProcessClientHeartbeatResponse(StreamingHubPayloadPool.Shared.RentOrCreate([0x95 /* Array(5) */, 0x7e /* 0x7e(127) */, 0x0 /* Sequence(0) */, .. ToMessagePackBytes(origin.AddSeconds(1)) /* ClientSentAt * /, 0xc0 /* Nil */, 0xc0 /* Nil */]));
-        manager.ProcessClientHeartbeatResponse(StreamingHubPayloadPool.Shared.RentOrCreate([0x95 /* Array(5) */, 0x7e /* 0x7e(127) */, 0x1 /* Sequence(1) */, .. ToMessagePackBytes(origin.AddSeconds(2)) /* ClientSentAt * /, 0xc0 /* Nil */, 0xc0 /* Nil */]));
-        manager.ProcessClientHeartbeatResponse(StreamingHubPayloadPool.Shared.RentOrCreate([0x95 /* Array(5) */, 0x7e /* 0x7e(127) */, 0x2 /* Sequence(2) */, .. ToMessagePackBytes(origin.AddSeconds(3)) /* ClientSentAt * /, 0xc0 /* Nil */, 0xc0 /* Nil */]));
+        manager.ProcessClientHeartbeatResponse(StreamingHubPayloadPool.Shared.RentOrCreate([0x95 /* Array(5) */, 0x7e /* 0x7e(127) */, 0x0 /* Sequence(0) */, .. ToMessagePackBytes(origin.AddSeconds(1)) /* ClientSentAt */, 0xc0 /* Nil */, 0xc0 /* Nil */]));
+        manager.ProcessClientHeartbeatResponse(StreamingHubPayloadPool.Shared.RentOrCreate([0x95 /* Array(5) */, 0x7e /* 0x7e(127) */, 0x1 /* Sequence(1) */, .. ToMessagePackBytes(origin.AddSeconds(2)) /* ClientSentAt */, 0xc0 /* Nil */, 0xc0 /* Nil */]));
+        manager.ProcessClientHeartbeatResponse(StreamingHubPayloadPool.Shared.RentOrCreate([0x95 /* Array(5) */, 0x7e /* 0x7e(127) */, 0x2 /* Sequence(2) */, .. ToMessagePackBytes(origin.AddSeconds(3)) /* ClientSentAt */, 0xc0 /* Nil */, 0xc0 /* Nil */]));
 
         timeProvider.Advance(TimeSpan.FromMilliseconds(100)); // 3s has elapsed since the first message.
         await Task.Delay(10);