diff --git a/.github/workflows/checkstyle.yml b/.github/workflows/checkstyle.yml
index 7594d69..a1c30c3 100644
--- a/.github/workflows/checkstyle.yml
+++ b/.github/workflows/checkstyle.yml
@@ -1,21 +1,16 @@
+# Copyright 2024 shoothzj <shoothzj@gmail.com>
 #
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 name: checkstyle
 on:
diff --git a/.github/workflows/line_lint.yml b/.github/workflows/line_lint.yml
index e2d2f89..519b5f9 100644
--- a/.github/workflows/line_lint.yml
+++ b/.github/workflows/line_lint.yml
@@ -1,21 +1,16 @@
+# Copyright 2024 shoothzj <shoothzj@gmail.com>
 #
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 name: line lint
 on:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d492f90..b77fc50 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,21 +1,16 @@
+# Copyright 2024 shoothzj <shoothzj@gmail.com>
 #
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 name: Release
 
diff --git a/.github/workflows/spotbugs.yml b/.github/workflows/spotbugs.yml
index 1d13a9e..e1ec83c 100644
--- a/.github/workflows/spotbugs.yml
+++ b/.github/workflows/spotbugs.yml
@@ -1,21 +1,16 @@
+# Copyright 2024 shoothzj <shoothzj@gmail.com>
 #
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
 #
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 name: spot bugs
 on:
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
deleted file mode 100644
index 1979ef7..0000000
--- a/.github/workflows/unit-tests.yml
+++ /dev/null
@@ -1,44 +0,0 @@
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-#
-#   http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-
-name: unit tests
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
-
-jobs:
-  unit-tests:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Set up Maven Central Repository
-        uses: actions/setup-java@v2
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-      - name: unit tests
-        run: mvn -B clean test
-      - uses: codecov/codecov-action@v2
-        with:
-          files: ./java-tool/target/site/jacoco/jacoco.xml,./sdk-codec-bk/target/site/jacoco/jacoco.xml
-          flags: unittests
diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
new file mode 100644
index 0000000..ff89ed1
--- /dev/null
+++ b/.github/workflows/unit_tests.yml
@@ -0,0 +1,39 @@
+# Copyright 2024 shoothzj <shoothzj@gmail.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: unit tests
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  unit-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Maven Central Repository
+        uses: actions/setup-java@v2
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+      - name: unit tests
+        run: mvn -B clean test
+      - uses: codecov/codecov-action@v2
+        with:
+          files: ./java-tool/target/site/jacoco/jacoco.xml,./sdk-codec-bk/target/site/jacoco/jacoco.xml
+          flags: unittests
diff --git a/ci/spotbugs/exclude.xml b/ci/spotbugs/exclude.xml
index 28f6735..a3cdc3c 100644
--- a/ci/spotbugs/exclude.xml
+++ b/ci/spotbugs/exclude.xml
@@ -34,4 +34,8 @@
         <Bug pattern="EI_EXPOSE_REP2"/>
     </Match>
 
+    <Match>
+        <Bug pattern="PA_PUBLIC_PRIMITIVE_ATTRIBUTE"/>
+    </Match>
+
 </FindBugsFilter>
diff --git a/example/src/main/java/io/github/protocol/sms/server/example/CmppServerExample.java b/example/src/main/java/io/github/protocol/sms/server/example/CmppServerExample.java
new file mode 100644
index 0000000..85cbb88
--- /dev/null
+++ b/example/src/main/java/io/github/protocol/sms/server/example/CmppServerExample.java
@@ -0,0 +1,13 @@
+package io.github.protocol.sms.server.example;
+
+import io.github.protocol.sms.cmpp.server.CmppConfig;
+import io.github.protocol.sms.cmpp.server.CmppServer;
+
+public class CmppServerExample {
+    public static void main(String[] args) throws Exception {
+        CmppConfig config = new CmppConfig();
+        config = config.port(PortConst.CMPP_DEFAULT_PORT);
+        CmppServer cmppServer = new CmppServer(config);
+        cmppServer.start();
+    }
+}
diff --git a/example/src/main/java/io/github/protocol/sms/server/example/CngpServerExample.java b/example/src/main/java/io/github/protocol/sms/server/example/CngpServerExample.java
new file mode 100644
index 0000000..630e83b
--- /dev/null
+++ b/example/src/main/java/io/github/protocol/sms/server/example/CngpServerExample.java
@@ -0,0 +1,13 @@
+package io.github.protocol.sms.server.example;
+
+import io.github.protocol.sms.cngp.server.CngpConfig;
+import io.github.protocol.sms.cngp.server.CngpServer;
+
+public class CngpServerExample {
+    public static void main(String[] args) throws Exception {
+        CngpConfig config = new CngpConfig();
+        config = config.port(PortConst.CNGP_DEFAULT_PORT);
+        CngpServer cngpServer = new CngpServer(config);
+        cngpServer.start();
+    }
+}
diff --git a/example/src/main/java/io/github/protocol/sms/server/example/SgipServerExample.java b/example/src/main/java/io/github/protocol/sms/server/example/SgipServerExample.java
new file mode 100644
index 0000000..4fe0c64
--- /dev/null
+++ b/example/src/main/java/io/github/protocol/sms/server/example/SgipServerExample.java
@@ -0,0 +1,13 @@
+package io.github.protocol.sms.server.example;
+
+import io.github.protocol.sms.sgip.server.SgipConfig;
+import io.github.protocol.sms.sgip.server.SgipServer;
+
+public class SgipServerExample {
+    public static void main(String[] args) throws Exception {
+        SgipConfig config = new SgipConfig();
+        config = config.port(PortConst.SGIP_DEFAULT_PORT);
+        SgipServer sgipServer = new SgipServer(config);
+        sgipServer.start();
+    }
+}
diff --git a/example/src/main/java/io/github/protocol/sms/server/example/SmgpServerExample.java b/example/src/main/java/io/github/protocol/sms/server/example/SmgpServerExample.java
new file mode 100644
index 0000000..9492769
--- /dev/null
+++ b/example/src/main/java/io/github/protocol/sms/server/example/SmgpServerExample.java
@@ -0,0 +1,13 @@
+package io.github.protocol.sms.server.example;
+
+import io.github.protocol.sms.smgp.server.SmgpConfig;
+import io.github.protocol.sms.smgp.server.SmgpServer;
+
+public class SmgpServerExample {
+    public static void main(String[] args) throws Exception {
+        SmgpConfig config = new SmgpConfig();
+        config = config.port(PortConst.SMGP_DEFAULT_PORT);
+        SmgpServer smgpServer = new SmgpServer(config);
+        smgpServer.start();
+    }
+}
diff --git a/pom.xml b/pom.xml
index 2749188..a683a84 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,19 +24,21 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <src.dir>src/main/java</src.dir>
         <!-- dependency -->
-        <junit-jupiter-engine.version>5.9.2</junit-jupiter-engine.version>
+        <junit-jupiter-engine.version>5.10.2</junit-jupiter-engine.version>
         <log4j.version>2.20.0</log4j.version>
-        <mockito.version>5.2.0</mockito.version>
-        <netty.version>4.1.90.Final</netty.version>
+        <lombok.version>1.18.30</lombok.version>
+        <mockito.version>5.11.0</mockito.version>
+        <netty.version>4.1.107.Final</netty.version>
+        <puppycrawl.version>10.14.0</puppycrawl.version>
         <slf4j.version>2.0.7</slf4j.version>
-        <sms-codec.version>0.0.11</sms-codec.version>
+        <sms-codec.version>0.0.12</sms-codec.version>
         <!-- plugin -->
-        <compiler-plugin.version>3.10.1</compiler-plugin.version>
-        <checkstyle-plugin.version>3.2.1</checkstyle-plugin.version>
-        <lombok.version>1.18.26</lombok.version>
-        <puppycrawl.version>10.11.0</puppycrawl.version>
-        <spotbugs-maven-plugin.version>4.7.3.0</spotbugs-maven-plugin.version>
-        <surefire-plugin.version>3.1.0</surefire-plugin.version>
+        <lombok-maven-plugin.version>1.18.20.0</lombok-maven-plugin.version>
+        <maven-compiler-plugin.version>3.11.0</maven-compiler-plugin.version>
+        <maven-checkstyle-plugin.version>3.3.1</maven-checkstyle-plugin.version>
+        <maven-javadoc-plugin.version>3.6.0</maven-javadoc-plugin.version>
+        <maven-surefire-plugin.version>3.2.1</maven-surefire-plugin.version>
+        <spotbugs-maven-plugin.version>4.8.3.1</spotbugs-maven-plugin.version>
     </properties>
 
     <dependencyManagement>
@@ -99,7 +101,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${compiler-plugin.version}</version>
+                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
                     <source>${maven.compiler.source}</source>
                     <target>${maven.compiler.target}</target>
@@ -108,12 +110,12 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>${surefire-plugin.version}</version>
+                <version>${maven-surefire-plugin.version}</version>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-checkstyle-plugin</artifactId>
-                <version>${checkstyle-plugin.version}</version>
+                <version>${maven-checkstyle-plugin.version}</version>
                 <dependencies>
                     <dependency>
                         <groupId>com.puppycrawl.tools</groupId>
@@ -167,7 +169,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.4.1</version>
+                <version>${maven-javadoc-plugin.version}</version>
                 <configuration>
                     <sourcepath>${src.dir}</sourcepath>
                     <doclint>all,-missing</doclint>
@@ -293,12 +295,12 @@
                     <plugin>
                         <groupId>org.projectlombok</groupId>
                         <artifactId>lombok-maven-plugin</artifactId>
-                        <version>1.18.20.0</version>
+                        <version>${lombok-maven-plugin.version}</version>
                         <dependencies>
                             <dependency>
                                 <groupId>org.projectlombok</groupId>
                                 <artifactId>lombok</artifactId>
-                                <version>1.18.24</version>
+                                <version>${lombok.version}</version>
                             </dependency>
                         </dependencies>
                         <executions>
diff --git a/sms-server-cmpp/src/main/java/io/github/protocol/sms/cmpp/server/CmppServer.java b/sms-server-cmpp/src/main/java/io/github/protocol/sms/cmpp/server/CmppServer.java
index 2426f4b..3ebdd01 100644
--- a/sms-server-cmpp/src/main/java/io/github/protocol/sms/cmpp/server/CmppServer.java
+++ b/sms-server-cmpp/src/main/java/io/github/protocol/sms/cmpp/server/CmppServer.java
@@ -1,8 +1,13 @@
 package io.github.protocol.sms.cmpp.server;
 
 import io.github.protocol.codec.cmpp.CmppConnect;
+import io.github.protocol.codec.cmpp.CmppConnectBody;
+import io.github.protocol.codec.cmpp.CmppConnectResp;
+import io.github.protocol.codec.cmpp.CmppConnectRespBody;
+import io.github.protocol.codec.cmpp.CmppConst;
 import io.github.protocol.codec.cmpp.CmppDecoder;
 import io.github.protocol.codec.cmpp.CmppEncoder;
+import io.github.protocol.codec.cmpp.CmppHeader;
 import io.github.protocol.codec.cmpp.CmppMessage;
 import io.github.protocol.codec.cmpp.CmppSubmit;
 import io.github.protocol.sms.server.util.BoundAtomicInt;
@@ -22,6 +27,7 @@
 import lombok.extern.slf4j.Slf4j;
 
 import java.net.InetSocketAddress;
+import java.nio.charset.StandardCharsets;
 import java.util.Optional;
 
 @ChannelHandler.Sharable
@@ -105,7 +111,12 @@ public void channelRead(ChannelHandlerContext ctx, Object message) {
         }
     }
 
-    private void processConnect(ChannelHandlerContext ctx, CmppConnect message) {
+    private void processConnect(ChannelHandlerContext ctx, CmppConnect msg) {
+        CmppHeader header = new CmppHeader(CmppConst.CONNECT_RESP_ID, msg.header().sequenceId());
+        CmppConnectBody body = msg.body();
+        String authenticator = new String(body.authenticatorSource(), StandardCharsets.UTF_8);
+        CmppConnectRespBody respBody = new CmppConnectRespBody(0, authenticator, (byte) 0);
+        ctx.writeAndFlush(new CmppConnectResp(header, respBody));
     }
 
     private void processSubmit(ChannelHandlerContext ctx, CmppSubmit message) {
diff --git a/sms-server-cngp/src/main/java/io/github/protocol/sms/cngp/server/CngpServer.java b/sms-server-cngp/src/main/java/io/github/protocol/sms/cngp/server/CngpServer.java
index fa3223a..ab52a52 100644
--- a/sms-server-cngp/src/main/java/io/github/protocol/sms/cngp/server/CngpServer.java
+++ b/sms-server-cngp/src/main/java/io/github/protocol/sms/cngp/server/CngpServer.java
@@ -1,9 +1,14 @@
 package io.github.protocol.sms.cngp.server;
 
+import io.github.protocol.codec.cngp.CngpConst;
 import io.github.protocol.codec.cngp.CngpDecoder;
 import io.github.protocol.codec.cngp.CngpEncoder;
 import io.github.protocol.codec.cngp.CngpExit;
+import io.github.protocol.codec.cngp.CngpHeader;
 import io.github.protocol.codec.cngp.CngpLogin;
+import io.github.protocol.codec.cngp.CngpLoginBody;
+import io.github.protocol.codec.cngp.CngpLoginResp;
+import io.github.protocol.codec.cngp.CngpLoginRespBody;
 import io.github.protocol.codec.cngp.CngpMessage;
 import io.github.protocol.codec.cngp.CngpSubmit;
 import io.github.protocol.sms.server.util.BoundAtomicInt;
@@ -109,6 +114,10 @@ public void channelRead(ChannelHandlerContext ctx, Object message) {
     }
 
     private void processLogin(ChannelHandlerContext ctx, CngpLogin msg) {
+        CngpHeader header = new CngpHeader(CngpConst.LOGIN_RESP_ID, 0, msg.header().sequenceId());
+        CngpLoginBody body = msg.body();
+        CngpLoginRespBody respBody = new CngpLoginRespBody(body.authenticatorClient(), (byte) 0);
+        ctx.writeAndFlush(new CngpLoginResp(header, respBody));
     }
 
     private void processSubmit(ChannelHandlerContext ctx, CngpSubmit msg) {
diff --git a/sms-server-sgip/src/main/java/io/github/protocol/sms/sgip/server/SgipServer.java b/sms-server-sgip/src/main/java/io/github/protocol/sms/sgip/server/SgipServer.java
index 692ce94..2ebdcc1 100644
--- a/sms-server-sgip/src/main/java/io/github/protocol/sms/sgip/server/SgipServer.java
+++ b/sms-server-sgip/src/main/java/io/github/protocol/sms/sgip/server/SgipServer.java
@@ -1,8 +1,12 @@
 package io.github.protocol.sms.sgip.server;
 
 import io.github.protocol.codec.sgip.SgipBind;
+import io.github.protocol.codec.sgip.SgipBindResp;
+import io.github.protocol.codec.sgip.SgipBindRespBody;
+import io.github.protocol.codec.sgip.SgipConst;
 import io.github.protocol.codec.sgip.SgipDecoder;
 import io.github.protocol.codec.sgip.SgipEncoder;
+import io.github.protocol.codec.sgip.SgipHeader;
 import io.github.protocol.codec.sgip.SgipMessage;
 import io.github.protocol.codec.sgip.SgipReport;
 import io.github.protocol.codec.sgip.SgipSubmit;
@@ -118,6 +122,9 @@ public void channelRead(ChannelHandlerContext ctx, Object message) {
     }
 
     private void processBind(ChannelHandlerContext ctx, SgipBind msg) {
+        SgipHeader header = new SgipHeader(SgipConst.BIND_RESP_ID, msg.header().sequenceNumber());
+        SgipBindRespBody respBody = new SgipBindRespBody((byte) 0, "");
+        ctx.writeAndFlush(new SgipBindResp(header, respBody));
     }
 
     private void processUnbind(ChannelHandlerContext ctx, SgipUnbind msg) {
diff --git a/sms-server-smgp/src/main/java/io/github/protocol/sms/smgp/server/SmgpServer.java b/sms-server-smgp/src/main/java/io/github/protocol/sms/smgp/server/SmgpServer.java
index 19d2bbd..406f00b 100644
--- a/sms-server-smgp/src/main/java/io/github/protocol/sms/smgp/server/SmgpServer.java
+++ b/sms-server-smgp/src/main/java/io/github/protocol/sms/smgp/server/SmgpServer.java
@@ -1,8 +1,13 @@
 package io.github.protocol.sms.smgp.server;
 
+import io.github.protocol.codec.smgp.SmgpConst;
 import io.github.protocol.codec.smgp.SmgpDecoder;
 import io.github.protocol.codec.smgp.SmgpEncoder;
+import io.github.protocol.codec.smgp.SmgpHeader;
 import io.github.protocol.codec.smgp.SmgpLogin;
+import io.github.protocol.codec.smgp.SmgpLoginBody;
+import io.github.protocol.codec.smgp.SmgpLoginResp;
+import io.github.protocol.codec.smgp.SmgpLoginRespBody;
 import io.github.protocol.codec.smgp.SmgpMessage;
 import io.github.protocol.codec.smgp.SmgpSubmit;
 import io.github.protocol.sms.server.util.BoundAtomicInt;
@@ -106,6 +111,10 @@ public void channelRead(ChannelHandlerContext ctx, Object message) {
     }
 
     private void processLogin(ChannelHandlerContext ctx, SmgpLogin msg) {
+        SmgpHeader header = new SmgpHeader(SmgpConst.LOGIN_RESP_ID, msg.header().sequenceID());
+        SmgpLoginBody body = msg.body();
+        SmgpLoginRespBody respBody = new SmgpLoginRespBody(0, body.authenticatorClient(), (byte) 0);
+        ctx.writeAndFlush(new SmgpLoginResp(header, respBody));
     }
 
     private void processSubmit(ChannelHandlerContext ctx, SmgpSubmit msg) {