diff --git a/src/JT808.DotNetty.Core/JT808.DotNetty.Core.csproj b/src/JT808.DotNetty.Core/JT808.DotNetty.Core.csproj
index 7c52f0b..73dcdc7 100644
--- a/src/JT808.DotNetty.Core/JT808.DotNetty.Core.csproj
+++ b/src/JT808.DotNetty.Core/JT808.DotNetty.Core.csproj
@@ -21,6 +21,7 @@
     <PackageReference Include="DotNetty.Handlers" Version="0.6.0" />
     <PackageReference Include="DotNetty.Transport.Libuv" Version="0.6.0" />
     <PackageReference Include="DotNetty.Codecs" Version="0.6.0" />
+    <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="2.2.0" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="2.2.0" />
@@ -31,10 +32,4 @@
     <ProjectReference Include="..\JT808.Protocol\src\JT808.Protocol\JT808.Protocol.csproj" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Reference Include="Microsoft.Extensions.Hosting.Abstractions">
-      <HintPath>C:\Program Files\dotnet\sdk\NuGetFallbackFolder\microsoft.extensions.hosting.abstractions\2.2.0\lib\netstandard2.0\Microsoft.Extensions.Hosting.Abstractions.dll</HintPath>
-    </Reference>
-  </ItemGroup>
-
 </Project>
diff --git a/src/JT808.DotNetty.Core/JT808BackgroundService.cs b/src/JT808.DotNetty.Core/JT808BackgroundService.cs
index a17c96f..cda2139 100644
--- a/src/JT808.DotNetty.Core/JT808BackgroundService.cs
+++ b/src/JT808.DotNetty.Core/JT808BackgroundService.cs
@@ -1,7 +1,5 @@
 using Microsoft.Extensions.Hosting;
 using System;
-using System.Collections.Generic;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -21,11 +19,7 @@ namespace JT808.DotNetty.Core
             get
             {
                 DateTime current = DateTime.Now;
-#if DEBUG
-                DateTime tmp = current.AddMinutes(1);
-#else
-                DateTime tmp = current.Date.AddDays(1).AddMilliseconds(-1);
-#endif
+                DateTime tmp = current.Date.AddDays(1).AddSeconds(-1);
                 return tmp.Subtract(current);
             }
             set { }
diff --git a/src/JT808.DotNetty.Core/Jobs/JT808UdpAtomicCouterResetDailyJob.cs b/src/JT808.DotNetty.Core/Jobs/JT808UdpAtomicCouterResetDailyJob.cs
index 73630bb..d609fdf 100644
--- a/src/JT808.DotNetty.Core/Jobs/JT808UdpAtomicCouterResetDailyJob.cs
+++ b/src/JT808.DotNetty.Core/Jobs/JT808UdpAtomicCouterResetDailyJob.cs
@@ -1,9 +1,5 @@
 using JT808.DotNetty.Core.Services;
-using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
-using System;
-using System.Collections.Generic;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 
diff --git a/src/JT808.DotNetty.Dashbord.sln b/src/JT808.DotNetty.Dashbord.sln
index b8a77a0..22a8930 100644
--- a/src/JT808.DotNetty.Dashbord.sln
+++ b/src/JT808.DotNetty.Dashbord.sln
@@ -9,6 +9,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{0D20F469-726
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JT808.Protocol", "JT808.Protocol\src\JT808.Protocol\JT808.Protocol.csproj", "{2F2FF360-A037-4C73-AF42-D252F1B86BD6}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JT808.DotNetty.Abstractions", "JT808.DotNetty.Abstractions\JT808.DotNetty.Abstractions.csproj", "{A9B7B882-29D4-4B75-9546-EAA0D216EDBB}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -23,12 +25,17 @@ Global
 		{2F2FF360-A037-4C73-AF42-D252F1B86BD6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2F2FF360-A037-4C73-AF42-D252F1B86BD6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2F2FF360-A037-4C73-AF42-D252F1B86BD6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A9B7B882-29D4-4B75-9546-EAA0D216EDBB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A9B7B882-29D4-4B75-9546-EAA0D216EDBB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A9B7B882-29D4-4B75-9546-EAA0D216EDBB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A9B7B882-29D4-4B75-9546-EAA0D216EDBB}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{2F2FF360-A037-4C73-AF42-D252F1B86BD6} = {0D20F469-7269-4D64-A3C6-BE08700EEDEB}
+		{A9B7B882-29D4-4B75-9546-EAA0D216EDBB} = {0D20F469-7269-4D64-A3C6-BE08700EEDEB}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {0DDBE27F-708F-46DC-837F-BEF34A50A0B1}