红帽全球峰会3.2. 在 Red Hat Enterprise Linux 上运行 Hello World
Hello World 示例创建与代理的连接，发送一条包含问候语的消息到 examples 队列，然后重新接收它。成功后，它会将收到的消息打印到控制台。
更改到示例目录并运行 helloworld.js 示例。
$ cd <install-dir>/node_modules/rhea/examples
$ node helloworld.js
Hello World!
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