diff --git a/src/DotNetty.Handlers/Tls/TlsHandler.MediationStream.Net.cs b/src/DotNetty.Handlers/Tls/TlsHandler.MediationStream.Net.cs
index b8e48ba..95323ea 100644
--- a/src/DotNetty.Handlers/Tls/TlsHandler.MediationStream.Net.cs
+++ b/src/DotNetty.Handlers/Tls/TlsHandler.MediationStream.Net.cs
@@ -69,6 +69,11 @@ namespace DotNetty.Handlers.Tls
                     int read = this.ReadFromInput(buffer);
                     return new ValueTask<int>(read);
                 }
+                //.NET8 sslStream will return 0 sometimes.like:https://github.com/dotnet/wcf/issues/5205
+                if (buffer.IsEmpty)
+                {
+                    return new ValueTask<int>(0);
+                }
 
                 Contract.Assert(this.sslOwnedMemory.IsEmpty);
                 // take note of buffer - we will pass bytes there once available
@@ -89,6 +94,12 @@ namespace DotNetty.Handlers.Tls
                             return Task.FromResult(read);
                         }
 
+                        //.NET8 sslStream will return 0 sometimes.like:https://github.com/dotnet/wcf/issues/5205
+                        if (buffer.IsEmpty)
+                        {
+                            return Task.FromResult(0);
+                        }
+
                         Contract.Assert(this.sslOwnedMemory.IsEmpty);
                         // take note of buffer - we will pass bytes there once available
                         this.sslOwnedMemory = buffer;
diff --git a/test/DotNetty.Buffers.Tests/DotNetty.Buffers.Tests.csproj b/test/DotNetty.Buffers.Tests/DotNetty.Buffers.Tests.csproj
index 23bf7ad..1b8a643 100644
--- a/test/DotNetty.Buffers.Tests/DotNetty.Buffers.Tests.csproj
+++ b/test/DotNetty.Buffers.Tests/DotNetty.Buffers.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Codecs.Http.Tests/DotNetty.Codecs.Http.Tests.csproj b/test/DotNetty.Codecs.Http.Tests/DotNetty.Codecs.Http.Tests.csproj
index 09e3e7b..ad22753 100644
--- a/test/DotNetty.Codecs.Http.Tests/DotNetty.Codecs.Http.Tests.csproj
+++ b/test/DotNetty.Codecs.Http.Tests/DotNetty.Codecs.Http.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Codecs.Mqtt.Tests/DotNetty.Codecs.Mqtt.Tests.csproj b/test/DotNetty.Codecs.Mqtt.Tests/DotNetty.Codecs.Mqtt.Tests.csproj
index cb1dada..7d2fef8 100644
--- a/test/DotNetty.Codecs.Mqtt.Tests/DotNetty.Codecs.Mqtt.Tests.csproj
+++ b/test/DotNetty.Codecs.Mqtt.Tests/DotNetty.Codecs.Mqtt.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Codecs.Protobuf.Tests/DotNetty.Codecs.Protobuf.Tests.csproj b/test/DotNetty.Codecs.Protobuf.Tests/DotNetty.Codecs.Protobuf.Tests.csproj
index 599180c..996840e 100644
--- a/test/DotNetty.Codecs.Protobuf.Tests/DotNetty.Codecs.Protobuf.Tests.csproj
+++ b/test/DotNetty.Codecs.Protobuf.Tests/DotNetty.Codecs.Protobuf.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Codecs.ProtocolBuffers.Tests/DotNetty.Codecs.ProtocolBuffers.Tests.csproj b/test/DotNetty.Codecs.ProtocolBuffers.Tests/DotNetty.Codecs.ProtocolBuffers.Tests.csproj
index a60ee8b..b460bf4 100644
--- a/test/DotNetty.Codecs.ProtocolBuffers.Tests/DotNetty.Codecs.ProtocolBuffers.Tests.csproj
+++ b/test/DotNetty.Codecs.ProtocolBuffers.Tests/DotNetty.Codecs.ProtocolBuffers.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <Configurations>Debug;Release;Package</Configurations>
     <Platforms>AnyCPU</Platforms>
diff --git a/test/DotNetty.Codecs.Redis.Tests/DotNetty.Codecs.Redis.Tests.csproj b/test/DotNetty.Codecs.Redis.Tests/DotNetty.Codecs.Redis.Tests.csproj
index bab73a4..e04d372 100644
--- a/test/DotNetty.Codecs.Redis.Tests/DotNetty.Codecs.Redis.Tests.csproj
+++ b/test/DotNetty.Codecs.Redis.Tests/DotNetty.Codecs.Redis.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Codecs.Tests/DotNetty.Codecs.Tests.csproj b/test/DotNetty.Codecs.Tests/DotNetty.Codecs.Tests.csproj
index 3e8b2cf..8a148c3 100644
--- a/test/DotNetty.Codecs.Tests/DotNetty.Codecs.Tests.csproj
+++ b/test/DotNetty.Codecs.Tests/DotNetty.Codecs.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Common.Tests/DotNetty.Common.Tests.csproj b/test/DotNetty.Common.Tests/DotNetty.Common.Tests.csproj
index e6de158..f59db99 100644
--- a/test/DotNetty.Common.Tests/DotNetty.Common.Tests.csproj
+++ b/test/DotNetty.Common.Tests/DotNetty.Common.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Common.Tests/Utilities/HashedWheelTimerTest.cs b/test/DotNetty.Common.Tests/Utilities/HashedWheelTimerTest.cs
index 22c52fe..e2c9a96 100644
--- a/test/DotNetty.Common.Tests/Utilities/HashedWheelTimerTest.cs
+++ b/test/DotNetty.Common.Tests/Utilities/HashedWheelTimerTest.cs
@@ -11,6 +11,7 @@ namespace DotNetty.Common.Tests.Utilities
     using DotNetty.Tests.Common;
     using Xunit;
     using Xunit.Abstractions;
+    using ITimer = DotNetty.Common.Utilities.ITimer;
 
     public class HashedWheelTimerTest : TestBase
     {
diff --git a/test/DotNetty.Handlers.Tests/DotNetty.Handlers.Tests.csproj b/test/DotNetty.Handlers.Tests/DotNetty.Handlers.Tests.csproj
index c394fdc..e2078c6 100644
--- a/test/DotNetty.Handlers.Tests/DotNetty.Handlers.Tests.csproj
+++ b/test/DotNetty.Handlers.Tests/DotNetty.Handlers.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Microbench/DotNetty.Microbench.csproj b/test/DotNetty.Microbench/DotNetty.Microbench.csproj
index 7f804cd..6dccc38 100644
--- a/test/DotNetty.Microbench/DotNetty.Microbench.csproj
+++ b/test/DotNetty.Microbench/DotNetty.Microbench.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Tests.Common/DotNetty.Tests.Common.csproj b/test/DotNetty.Tests.Common/DotNetty.Tests.Common.csproj
index 8a28698..3957513 100644
--- a/test/DotNetty.Tests.Common/DotNetty.Tests.Common.csproj
+++ b/test/DotNetty.Tests.Common/DotNetty.Tests.Common.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <Configurations>Debug;Release;Package</Configurations>
diff --git a/test/DotNetty.Tests.End2End/DotNetty.Tests.End2End.csproj b/test/DotNetty.Tests.End2End/DotNetty.Tests.End2End.csproj
index 17b5107..adfdfd1 100644
--- a/test/DotNetty.Tests.End2End/DotNetty.Tests.End2End.csproj
+++ b/test/DotNetty.Tests.End2End/DotNetty.Tests.End2End.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Transport.Libuv.Tests/DotNetty.Transport.Libuv.Tests.csproj b/test/DotNetty.Transport.Libuv.Tests/DotNetty.Transport.Libuv.Tests.csproj
index 1a36813..c18b341 100644
--- a/test/DotNetty.Transport.Libuv.Tests/DotNetty.Transport.Libuv.Tests.csproj
+++ b/test/DotNetty.Transport.Libuv.Tests/DotNetty.Transport.Libuv.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
diff --git a/test/DotNetty.Transport.Tests.Performance/DotNetty.Transport.Tests.Performance.csproj b/test/DotNetty.Transport.Tests.Performance/DotNetty.Transport.Tests.Performance.csproj
index 92c6f96..4356c4d 100644
--- a/test/DotNetty.Transport.Tests.Performance/DotNetty.Transport.Tests.Performance.csproj
+++ b/test/DotNetty.Transport.Tests.Performance/DotNetty.Transport.Tests.Performance.csproj
@@ -4,7 +4,7 @@
   </PropertyGroup>
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <ApplicationIcon />
     <OutputTypeEx>library</OutputTypeEx>
diff --git a/test/DotNetty.Transport.Tests/DotNetty.Transport.Tests.csproj b/test/DotNetty.Transport.Tests/DotNetty.Transport.Tests.csproj
index 530e594..490b457 100644
--- a/test/DotNetty.Transport.Tests/DotNetty.Transport.Tests.csproj
+++ b/test/DotNetty.Transport.Tests/DotNetty.Transport.Tests.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.1;net472;net5.0;net6.0;net8.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <AssemblyOriginatorKeyFile>../../DotNetty.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>