diff --git a/build.cake b/build.cake
index 63574e2..d742bac 100644
--- a/build.cake
+++ b/build.cake
@@ -40,6 +40,7 @@ Task("UpdateVersion").DoesForEach(GetFiles("**/Uragano.*.csproj"),(file)=>{
    XmlPoke(file,"/Project/PropertyGroup/PackageTags","Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection");
    XmlPoke(file,"/Project/PropertyGroup/PackageIconUrl","https://raw.githubusercontent.com/1100100/Uragano/master/icon.png");
    XmlPoke(file,"/Project/PropertyGroup/Authors","Owen");
+   XmlPoke(file,"/Project/PropertyGroup/PackageLicenseExpression","MIT");
 });
 
 Task("Restore").Does(()=>{
diff --git a/samples/Sample.Server/appsettings.json b/samples/Sample.Server/appsettings.json
index 842b96d..3d0f01d 100644
--- a/samples/Sample.Server/appsettings.json
+++ b/samples/Sample.Server/appsettings.json
@@ -9,20 +9,14 @@
     "Server": {
       "address": "192.168.1.129",
       "port": 5001,
-      "certUrl": "",
-      "certPwd": "",
       "weight": 1
     },
     "Client": {
       "DefaultCert": {
-        "url": "",
-        "pwd": ""
+
       },
       "ServicesCert": {
-        "RPC": {
-          "url": "",
-          "pwd": ""
-        }
+
       }
     },
     "ServiceDiscovery": {
diff --git a/src/Uragano.Abstract/Uragano.Abstractions.csproj b/src/Uragano.Abstract/Uragano.Abstractions.csproj
index a767cdb..6289db3 100644
--- a/src/Uragano.Abstract/Uragano.Abstractions.csproj
+++ b/src/Uragano.Abstract/Uragano.Abstractions.csproj
@@ -9,9 +9,10 @@
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <PackageTags>Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection</PackageTags>
     <PackageIconUrl>https://raw.githubusercontent.com/1100100/Uragano/master/icon.png</PackageIconUrl>
-    <PackageLicenseUrl>https://github.com/1100100Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <Authors>Owen</Authors>
     <Company>Owen</Company>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
 
diff --git a/src/Uragano.Caching.Memory/Uragano.Caching.Memory.csproj b/src/Uragano.Caching.Memory/Uragano.Caching.Memory.csproj
index 104c558..3f20d6f 100644
--- a/src/Uragano.Caching.Memory/Uragano.Caching.Memory.csproj
+++ b/src/Uragano.Caching.Memory/Uragano.Caching.Memory.csproj
@@ -8,10 +8,11 @@
     <Authors>Owen</Authors>
     <Company>Owen</Company>
     <Description>A simple, high performance RPC library.</Description>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <PackageIconUrl>https://raw.githubusercontent.com/1100100/Uragano/master/icon.png</PackageIconUrl>
     <PackageTags>Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection</PackageTags>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.Caching.Redis/Uragano.Caching.Redis.csproj b/src/Uragano.Caching.Redis/Uragano.Caching.Redis.csproj
index b83a80b..e268a32 100644
--- a/src/Uragano.Caching.Redis/Uragano.Caching.Redis.csproj
+++ b/src/Uragano.Caching.Redis/Uragano.Caching.Redis.csproj
@@ -8,10 +8,11 @@
     <Authors>Owen</Authors>
     <Company>Owen</Company>
     <Description>A simple, high performance RPC library.</Description>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <PackageIconUrl>https://raw.githubusercontent.com/1100100/Uragano/master/icon.png</PackageIconUrl>
     <PackageTags>Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection</PackageTags>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.Codec.MessagePack/Uragano.Codec.MessagePack.csproj b/src/Uragano.Codec.MessagePack/Uragano.Codec.MessagePack.csproj
index 09ed88b..abacd8c 100644
--- a/src/Uragano.Codec.MessagePack/Uragano.Codec.MessagePack.csproj
+++ b/src/Uragano.Codec.MessagePack/Uragano.Codec.MessagePack.csproj
@@ -9,9 +9,10 @@
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <PackageIconUrl>https://raw.githubusercontent.com/1100100/Uragano/master/icon.png</PackageIconUrl>
     <PackageTags>Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection</PackageTags>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <Authors>Owen</Authors>
     <Company>Owen</Company>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.Consul/Uragano.Consul.csproj b/src/Uragano.Consul/Uragano.Consul.csproj
index 626d264..ff7c831 100644
--- a/src/Uragano.Consul/Uragano.Consul.csproj
+++ b/src/Uragano.Consul/Uragano.Consul.csproj
@@ -9,9 +9,10 @@
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <Description>A simple, high performance RPC library.</Description>
     <Version>0.0.3</Version>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <Authors>Owen</Authors>
     <Company>Owen</Company>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.Core/Uragano.Core.csproj b/src/Uragano.Core/Uragano.Core.csproj
index c3c0275..69caa13 100644
--- a/src/Uragano.Core/Uragano.Core.csproj
+++ b/src/Uragano.Core/Uragano.Core.csproj
@@ -8,10 +8,11 @@
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <Description>A simple, high performance RPC library.</Description>
     <Version>0.0.3</Version>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <GeneratePackageOnBuild>false</GeneratePackageOnBuild>
     <Authors>Owen</Authors>
     <Company>Owen</Company>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.DynamicProxy/Uragano.DynamicProxy.csproj b/src/Uragano.DynamicProxy/Uragano.DynamicProxy.csproj
index f2f0e1d..8f7a9b1 100644
--- a/src/Uragano.DynamicProxy/Uragano.DynamicProxy.csproj
+++ b/src/Uragano.DynamicProxy/Uragano.DynamicProxy.csproj
@@ -9,9 +9,10 @@
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <Description>A simple, high performance RPC library.</Description>
     <Version>0.0.3</Version>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <Authors>Owen</Authors>
     <Company>Owen</Company>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.Logging.Exceptionless/Uragano.Logging.Exceptionless.csproj b/src/Uragano.Logging.Exceptionless/Uragano.Logging.Exceptionless.csproj
index 588973a..a8d480a 100644
--- a/src/Uragano.Logging.Exceptionless/Uragano.Logging.Exceptionless.csproj
+++ b/src/Uragano.Logging.Exceptionless/Uragano.Logging.Exceptionless.csproj
@@ -7,10 +7,11 @@
     <Authors>Owen</Authors>
     <Company>Owen</Company>
     <Description>A simple, high performance RPC library.</Description>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <PackageIconUrl>https://raw.githubusercontent.com/1100100/Uragano/master/icon.png</PackageIconUrl>
     <PackageTags>Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection</PackageTags>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.Logging.Log4net/Uragano.Logging.Log4Net.csproj b/src/Uragano.Logging.Log4net/Uragano.Logging.Log4Net.csproj
index 7c2faf2..45c2674 100644
--- a/src/Uragano.Logging.Log4net/Uragano.Logging.Log4Net.csproj
+++ b/src/Uragano.Logging.Log4net/Uragano.Logging.Log4Net.csproj
@@ -8,10 +8,11 @@
     <Company>Owen</Company>
     <Description>A simple, high performance RPC library.</Description>
     <Copyright></Copyright>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <PackageIconUrl>https://raw.githubusercontent.com/1100100/Uragano/master/icon.png</PackageIconUrl>
     <PackageTags>Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection</PackageTags>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.Logging.NLog/Uragano.Logging.NLog.csproj b/src/Uragano.Logging.NLog/Uragano.Logging.NLog.csproj
index 5770f41..875d21c 100644
--- a/src/Uragano.Logging.NLog/Uragano.Logging.NLog.csproj
+++ b/src/Uragano.Logging.NLog/Uragano.Logging.NLog.csproj
@@ -11,6 +11,7 @@
     <PackageIconUrl>https://raw.githubusercontent.com/1100100/Uragano/master/icon.png</PackageIconUrl>
     <PackageTags>Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection</PackageTags>
     <GeneratePackageOnBuild>false</GeneratePackageOnBuild>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.Remoting/Uragano.Remoting.csproj b/src/Uragano.Remoting/Uragano.Remoting.csproj
index b087404..cdc1463 100644
--- a/src/Uragano.Remoting/Uragano.Remoting.csproj
+++ b/src/Uragano.Remoting/Uragano.Remoting.csproj
@@ -9,9 +9,10 @@
     <PackageProjectUrl>https://github.com/1100100/Uragano</PackageProjectUrl>
     <Description>A simple, high performance RPC library.</Description>
     <Version>0.0.3</Version>
-    <PackageLicenseUrl>https://github.com/1100100/Uragano/blob/master/LICENSE</PackageLicenseUrl>
+    <PackageLicenseUrl></PackageLicenseUrl>
     <Authors>Owen</Authors>
     <Company>Owen</Company>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/Uragano.ZooKeeper/Uragano.ZooKeeper.csproj b/src/Uragano.ZooKeeper/Uragano.ZooKeeper.csproj
index b6e5f0f..0a8a58f 100644
--- a/src/Uragano.ZooKeeper/Uragano.ZooKeeper.csproj
+++ b/src/Uragano.ZooKeeper/Uragano.ZooKeeper.csproj
@@ -11,6 +11,7 @@
     <PackageIconUrl>https://raw.githubusercontent.com/1100100/Uragano/master/icon.png</PackageIconUrl>
     <PackageTags>Uragano,RPC,DotNetty,Microservice,MessagePack,DynamicProxy,dotnetcore,service-discovery,polly,circuit-breaker,consul,zookeeper,dependency-injection</PackageTags>
     <GeneratePackageOnBuild>false</GeneratePackageOnBuild>
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
 
   <ItemGroup>