使用JMeter测试基于WebSocket协议的服务

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• 由于JMeter没有针对WebSocket的sampler，所以就需要安装开源的插件，以使其支持WebSocket协议。

安装JMeter WebSocketSampler

• 首先，从github上clone源码下来，地址如下： https://github.com/maciejzaleski/JMeter-WebSocketSampler

• 之后，使用Maven构建此代码后，将jar包“JMeterWebSocketSampler-1.0.2-SNAPSHOT.jar”放到JMeter的“lib/ext/”目录中，此目录是JMeter用来放置扩展包的地方。

• 最后，将websocket sampler依赖的其他jar包放到“lib”目录下，此目录是JMeter用来放插件所依赖的jar包的地方。websocket sampler所依赖的jar包如下：

  • jetty-http-9.1.1.v20140108.jar
  • jetty-io-9.1.1.v20140108.jar
  • jetty-util-9.1.1.v20140108.jar
  • websocket-api-9.1.1.v20140108.jar
  • websocket-client-9.1.1.v20140108.jar
  • websocket-common-9.1.1.v20140108.jar

• 打开JMeter，通过”Add” -> “Sampler” -> “WebSocket Sampler”，添加一个取样器：
  

创建一个简单的websocket实现：

• 通过下面blog所说的步骤，构建一个基于websocket协议的聊天室：
  http://waylau.com/netty-websocket-chat/
• 启动后如图：
  

使用JMeter测试websocket聊天室

• 配置WebSocket Sampler如下图：
  

• 运行后，查看JMeter显示结果：
  

• 查看聊天室，发现确实收到的此条消息：