## 客户端测试 启动服务器: ``` ./mix-tcpd service start -c ../applications/tcp/config/tcpd.php ``` 访问测试 (新开一个终端): ``` telnet 127.0.0.1 9503 ``` 输入 JSON 字符串请求信息: ``` {"method":"hello.world","params":[],"id":123} ``` 响应内容: ``` {"jsonrpc":"2.0","error":null,"result":["Hello, World!"],"id":123} ```