diff --git a/.github/ISSUE_TEMPLATE/bug-report.yml b/.github/ISSUE_TEMPLATE/bug-report.yml
index 8c35143..4424408 100644
--- a/.github/ISSUE_TEMPLATE/bug-report.yml
+++ b/.github/ISSUE_TEMPLATE/bug-report.yml
@@ -41,6 +41,5 @@ body:
       label: Optional packet capture logs
       description: |
         You can also provide tcpdump packet capture logs.
-        Example command: `tcpdump -i en0 port 1883 -w mqtt.pcap`
+        Example command: `tcpdump -i eth0 port 1883 -w mqtt.pcap`
         Please change the network card and port to match your environment, then attach `mqtt.pcap`.
-
diff --git a/.github/ISSUE_TEMPLATE/support-question.yml b/.github/ISSUE_TEMPLATE/support-question.yml
index ec2ddc8..a031585 100644
--- a/.github/ISSUE_TEMPLATE/support-question.yml
+++ b/.github/ISSUE_TEMPLATE/support-question.yml
@@ -18,4 +18,3 @@ body:
     attributes:
       label: Context
       description: Add relevant code snippets, logs, or environment details.
-
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4a2603f..7564fd9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -23,7 +23,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest]
         php-version: [ '8.1', '8.2', '8.3', '8.4', '8.5' ]
-        swoole-version: [ 'v4.8.13', 'v5.1.8', 'v6.2.0', 'master' ]
+        swoole-version: [ 'v4.8.13', 'v5.1.8', 'v6.2.1', 'master' ]
         exclude:
           - php-version: '8.5'
             swoole-version: 'v5.1.8'
@@ -36,7 +36,7 @@ jobs:
           - php-version: '8.3'
             swoole-version: 'v4.8.13'
           - php-version: '8.1'
-            swoole-version: 'v6.2.0'
+            swoole-version: 'v6.2.1'
           - php-version: '8.1'
             swoole-version: 'master'
       max-parallel: 10
diff --git a/src/BaseClient.php b/src/BaseClient.php
index b688e33..4225410 100644
--- a/src/BaseClient.php
+++ b/src/BaseClient.php
@@ -179,15 +179,11 @@ public function setConnectData(array $connectData): self
      */
     public function getConnectData(?string $key = null)
     {
-        if ($key) {
-            if (isset($this->connectData[$key])) {
-                return $this->connectData[$key];
-            }
-
-            return null;
+        if ($key === null) {
+            return $this->connectData;
         }
 
-        return $this->connectData;
+        return $this->connectData[$key] ?? null;
     }
 
     protected function isCoroutineClientType(): bool
diff --git a/tests/Unit/ClientTest.php b/tests/Unit/ClientTest.php
index 5543039..b413d33 100644
--- a/tests/Unit/ClientTest.php
+++ b/tests/Unit/ClientTest.php
@@ -39,7 +39,7 @@ public function testConnectException()
     public function testBase64()
     {
         $topic = 'simps-mqtt/test/base64';
-        $base64 = base64_encode(file_get_contents(TESTS_DIR . '/files/wechat.jpg'));
+        $base64 = base64_encode(file_get_contents(TESTS_DIR . '/files/wechat.png'));
         $client = new MQTTClient(SIMPS_MQTT_REMOTE_HOST, SIMPS_MQTT_PORT, getTestConnectConfig());
         $client->connect(false);
         $client->subscribe([$topic => 0]);
diff --git a/tests/files/wechat.jpg b/tests/files/wechat.jpg
deleted file mode 100644
index caaeea0..0000000
Binary files a/tests/files/wechat.jpg and /dev/null differ
diff --git a/tests/files/wechat.png b/tests/files/wechat.png
new file mode 100644
index 0000000..45683e6
Binary files /dev/null and b/tests/files/wechat.png differ