diff --git a/.github/workflows/java_checkstyle.yml b/.github/workflows/java_checkstyle.yml
deleted file mode 100644
index cdec2a7..0000000
--- a/.github/workflows/java_checkstyle.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-name: java checkstyle
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
-
-jobs:
-  java_checkstyle:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up Maven Central Repository
-        uses: actions/setup-java@v4
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-      - name: checkstyle
-        run: mvn -B clean checkstyle:check
diff --git a/mdtp-client/pom.xml b/mdtp-client/pom.xml
new file mode 100644
index 0000000..1ed3260
--- /dev/null
+++ b/mdtp-client/pom.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>io.github.protocol-laboratory</groupId>
+        <artifactId>mdtp-parent</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>mdtp-client</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-handler</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>
diff --git a/mdtp-client/src/main/java/io/github/protocol/mdtp/client/MdtpClient.java b/mdtp-client/src/main/java/io/github/protocol/mdtp/client/MdtpClient.java
new file mode 100644
index 0000000..4da2492
--- /dev/null
+++ b/mdtp-client/src/main/java/io/github/protocol/mdtp/client/MdtpClient.java
@@ -0,0 +1,4 @@
+package io.github.protocol.mdtp.client;
+
+public class MdtpClient {
+}
diff --git a/mdtp-server/pom.xml b/mdtp-server/pom.xml
new file mode 100644
index 0000000..8b71bf2
--- /dev/null
+++ b/mdtp-server/pom.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>io.github.protocol-laboratory</groupId>
+        <artifactId>mdtp-parent</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>mdtp-server</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-handler</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>
diff --git a/mdtp-server/src/main/java/io/github/protocol/mdtp/server/MdtpServer.java b/mdtp-server/src/main/java/io/github/protocol/mdtp/server/MdtpServer.java
new file mode 100644
index 0000000..5463dcf
--- /dev/null
+++ b/mdtp-server/src/main/java/io/github/protocol/mdtp/server/MdtpServer.java
@@ -0,0 +1,4 @@
+package io.github.protocol.mdtp.server;
+
+public class MdtpServer {
+}
diff --git a/pom.xml b/pom.xml
index 2dec817..a8016ef 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,6 +10,8 @@
     <packaging>pom</packaging>
 
     <modules>
+        <module>mdtp-client</module>
+        <module>mdtp-server</module>
     </modules>
 
     <properties>
@@ -21,6 +23,7 @@
         <junit.version>5.11.0</junit.version>
         <log4j.version>2.20.0</log4j.version>
         <lombok.version>1.18.34</lombok.version>
+        <netty.version>4.1.112.Final</netty.version>
         <slf4j.version>2.0.16</slf4j.version>
         <!-- plugin -->
         <lombok-maven-plugin.version>1.18.20.0</lombok-maven-plugin.version>
@@ -38,6 +41,18 @@
         <spotless-maven-plugi.version>2.43.0</spotless-maven-plugi.version>
     </properties>
 
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>io.netty</groupId>
+                <artifactId>netty-bom</artifactId>
+                <version>${netty.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
     <dependencies>
         <dependency>
             <groupId>org.projectlombok</groupId>