diff --git a/PenetrateBasic/PenetrateBasic.vcxproj b/PenetrateBasic/PenetrateBasic.vcxproj
index 253f6dc..37024de 100644
--- a/PenetrateBasic/PenetrateBasic.vcxproj
+++ b/PenetrateBasic/PenetrateBasic.vcxproj
@@ -37,7 +37,7 @@
   </ImportGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'" Label="QtSettings">
     <QtInstall>5.12.11_msvc2017_64</QtInstall>
-    <QtModules>core</QtModules>
+    <QtModules>core;network</QtModules>
     <QtBuildConfig>debug</QtBuildConfig>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'" Label="QtSettings">
@@ -94,12 +94,14 @@
   <ItemGroup>
     <ClCompile Include="dispatch.cpp" />
     <ClCompile Include="main.cpp" />
+    <ClCompile Include="msgs_types.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="cmds.h" />
     <ClInclude Include="cmds_basic.h" />
     <ClInclude Include="data_types.h" />
     <ClInclude Include="dispatch.h" />
+    <ClInclude Include="msgs_types.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Condition="Exists('$(QtMsBuild)\qt.targets')">
diff --git a/PenetrateBasic/PenetrateBasic.vcxproj.filters b/PenetrateBasic/PenetrateBasic.vcxproj.filters
index b76a98c..a7a99b8 100644
--- a/PenetrateBasic/PenetrateBasic.vcxproj.filters
+++ b/PenetrateBasic/PenetrateBasic.vcxproj.filters
@@ -29,6 +29,9 @@
     <ClCompile Include="dispatch.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="msgs_types.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="cmds_basic.h">
@@ -43,5 +46,8 @@
     <ClInclude Include="data_types.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="msgs_types.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/PenetrateBasic/data_types.h b/PenetrateBasic/data_types.h
index c6ca2fb..309b411 100644
--- a/PenetrateBasic/data_types.h
+++ b/PenetrateBasic/data_types.h
@@ -9,29 +9,35 @@ namespace datas {
 	public:
 		virtual ~IDataObject() = default;
 
+		virtual bool isValid() const = 0;
 		virtual bool isArray() const = 0;
-
-		virtual bool getBool(const QString& key) = 0;
-		virtual double getDouble(const QString& key) = 0;
-		virtual int32_t getInt32(const QString& key) = 0;
-		virtual int64_t getInt64(const QString& key) = 0;
-		virtual QString getString(const QString& key) = 0;
-		virtual IDataObject getObject(const QString& key) = 0;
 		virtual IDataArray toArray() = 0;
 
+		virtual bool getBool(const QString& key) const = 0;
+		virtual double getDouble(const QString& key) const = 0;
+		virtual int32_t getInt32(const QString& key) const = 0;
+		virtual int64_t getInt64(const QString& key) const = 0;
+		virtual QString getString(const QString& key) const = 0;
+		virtual IDataObject getObject(const QString& key) const = 0;
+
 		virtual void setBool(const QString& key, bool value) = 0;
 		virtual void setDouble(const QString& key, double value) = 0;
 		virtual void setInt32(const QString& key, int32_t value) = 0;
 		virtual void setInt64(const QString& key, int64_t value) = 0;
 		virtual void setString(const QString& key, const QString& value) = 0;
 		virtual void setObject(const QString& key, IDataObject value) = 0;
+
+		virtual QString toText() const = 0;
+		virtual void loadFrom(const QString &text) = 0;
 	};
 	class IDataArray : public IDataObject {
 	public:
 		virtual ~IDataArray() = default;
 
+		virtual bool isValid() const = 0;
+
 		virtual int32_t size() const = 0;
-		virtual IDataObject get(int index) = 0;
+		virtual IDataObject get(int index) const = 0;
 		virtual void insert(int index, IDataObject value) = 0;
 		virtual void append(IDataObject value) = 0;
 	};
diff --git a/PenetrateBasic/msgs_types.cpp b/PenetrateBasic/msgs_types.cpp
new file mode 100644
index 0000000..06a7353
--- /dev/null
+++ b/PenetrateBasic/msgs_types.cpp
@@ -0,0 +1,12 @@
+#include "msgs_types.h"
+
+using namespace msgs;
+
+QByteArray getMessage(const datas::IDataObject& obj) {
+    auto content = obj.toText().toUtf8();
+    auto header = QString(u8"Content-Length:%1\n").arg(content.length());
+    
+    auto u8_content = header.toUtf8();
+    u8_content.append(content);
+    return u8_content;
+}
diff --git a/PenetrateBasic/msgs_types.h b/PenetrateBasic/msgs_types.h
new file mode 100644
index 0000000..04ed2b4
--- /dev/null
+++ b/PenetrateBasic/msgs_types.h
@@ -0,0 +1,10 @@
+#pragma once
+
+#include <QString>
+#include "data_types.h"
+
+namespace msgs {
+	QByteArray getMessage(const datas::IDataObject &obj);
+
+
+}