diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index a362e62..05aa6e2 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -30,7 +30,7 @@ jobs:
         run: docker run -d --name=dev-consul -e CONSUL_BIND_INTERFACE=eth0 --net=host consul:1.15.4
       - name: Setup Services
         run: |
-          docker run -d --name jsonrpc -p 9501:9501 -p 9502:9502 -p 9503:9503 -p 9504:9504 limingxinleo/hyperf-jsonrpc-demo:latest
+          docker run -d --name jsonrpc -p 9501:9501 -p 9502:9502 -p 9503:9503 -p 9504:9504 -p 9505:9505 iisiam/hyperf-rpc-demo:latest
           sleep 10
           php ./tests/register.php
       - name: Run Test Cases
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 3b21407..5b4e2dd 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -27,5 +27,8 @@
         <env name="JSONRPC_HOST" value="127.0.0.1" />
         <env name="JSONRPC_PORT" value="9503" />
         <env name="JSONRPC_TIMEOUT" value="2" />
+        <env name="JSONRPC_LENGTH_CHECK_HOST" value="127.0.0.1" />
+        <env name="JSONRPC_LENGTH_CHECK_PORT" value="9505" />
+        <env name="JSONRPC_LENGTH_CHECK_TIMEOUT" value="2" />
     </php>
 </phpunit>
diff --git a/src/Transporter/MultiplexRpcTransporter.php b/src/Transporter/MultiplexRpcTransporter.php
index cfd220e..5b89b04 100644
--- a/src/Transporter/MultiplexRpcTransporter.php
+++ b/src/Transporter/MultiplexRpcTransporter.php
@@ -11,10 +11,8 @@
 
 namespace FriendsOfHyperf\Jet\Transporter;
 
-use Exception;
 use FriendsOfHyperf\Jet\Exception\ConnectionException;
 use FriendsOfHyperf\Jet\Exception\RecvFailedException;
-use RuntimeException;
 
 class MultiplexRpcTransporter extends StreamSocketTransporter
 {
@@ -45,7 +43,7 @@ public function receive()
     }
 
     /**
-     * @throws Exception
+     * @throws \Exception
      */
     private function readBytes(int $length): string
     {
@@ -58,7 +56,7 @@ private function readBytes(int $length): string
 
             $selected = stream_select($read, $write, $except, $this->timeout);
             if ($selected === false) {
-                throw new RuntimeException('Failed to select stream.');
+                throw new \RuntimeException('Failed to select stream.');
             }
 
             if ($selected === 0) {
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index 9b5505b..2c1ada5 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -12,8 +12,10 @@
 namespace FriendsOfHyperf\Jet\Tests;
 
 use FriendsOfHyperf\Jet\ClientFactory;
+use FriendsOfHyperf\Jet\DataFormatter\MultiplexDataFormatter;
 use FriendsOfHyperf\Jet\Metadata;
 use FriendsOfHyperf\Jet\MetadataManager;
+use FriendsOfHyperf\Jet\Packer\JsonMultiplexPacker;
 use FriendsOfHyperf\Jet\RegistryManager;
 
 /**
@@ -65,6 +67,21 @@ public function testCalculatorServiceByStreamSocketTransporter()
         $this->assertSame($a + $b, $client->add($a, $b));
     }
 
+    public function testCalculatorServiceByMultiplexRpcTransporter()
+    {
+        $client = ClientFactory::create(
+            $this->service,
+            $this->createMultiplexRpcTransporter(),
+            new JsonMultiplexPacker(),
+            new MultiplexDataFormatter()
+        );
+
+        $a = rand(1, 99);
+        $b = rand(1, 99);
+
+        $this->assertSame($a + $b, $client->add($a, $b));
+    }
+
     public function testMetadataManager()
     {
         MetadataManager::register(
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 95e1f3a..2c625e0 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -13,6 +13,7 @@
 
 use FriendsOfHyperf\Jet\Registry\ConsulRegistry;
 use FriendsOfHyperf\Jet\Transporter\GuzzleHttpTransporter;
+use FriendsOfHyperf\Jet\Transporter\MultiplexRpcTransporter;
 use FriendsOfHyperf\Jet\Transporter\StreamSocketTransporter;
 
 /**
@@ -37,6 +38,12 @@ class TestCase extends \PHPUnit\Framework\TestCase
 
     private $jsonrpcHttpTimeout;
 
+    private $jsonrpcLengthCheckHost;
+
+    private $jsonrpcLengthCheckPort;
+
+    private $jsonrpcLengthCheckTimeout;
+
     public function __construct($name = null, array $data = [], $dataName = '')
     {
         parent::__construct($name, $data, $dataName);
@@ -51,6 +58,10 @@ public function __construct($name = null, array $data = [], $dataName = '')
         $this->jsonrpcHttpHost = $_ENV['JSONRPC_HTTP_HOST'] ?? '127.0.0.1';
         $this->jsonrpcHttpPort = (int) ($_ENV['JSONRPC_HTTP_PORT'] ?? 9502);
         $this->jsonrpcHttpTimeout = (int) ($_ENV['JSONRPC_HTTP_TIMEOUT'] ?? 2);
+
+        $this->jsonrpcLengthCheckHost = $_ENV['JSONRPC_LENGTH_CHECK_HOST'] ?? '127.0.0.1';
+        $this->jsonrpcLengthCheckPort = (int) ($_ENV['JSONRPC_LENGTH_CHECK_PORT'] ?? 9504);
+        $this->jsonrpcLengthCheckTimeout = (int) ($_ENV['JSONRPC_LENGTH_CHECK_TIMEOUT'] ?? 2);
     }
 
     public function createGuzzleHttpTransporter()
@@ -63,6 +74,11 @@ public function createStreamSocketTransporter()
         return new StreamSocketTransporter($this->jsonrpcHost, $this->jsonrpcPort, $this->jsonrpcTimeout);
     }
 
+    public function createMultiplexRpcTransporter()
+    {
+        return new MultiplexRpcTransporter($this->jsonrpcLengthCheckHost, $this->jsonrpcLengthCheckPort, $this->jsonrpcLengthCheckTimeout);
+    }
+
     protected function createRegistry()
     {
         return new ConsulRegistry(['uri' => $this->consulUri, 'timeout' => $this->consulTimeout]);