Test a server-side application

Version Compatibility

This feature is only available on the Windows, macOS and Linux version of System Designer.

This tutorial will show you how to run a simple Node.js application with System Designer.

Create a system

create a system,
click on Behaviors tab,
click on the start behavior,
set the code of the behavior with this code:

function start() { 
  const http = require('http'),
      logger = this.require('logger');

  http.createServer(function (req, res) {
    res.writeHead(200);
    res.end('hello world\n');
  }).listen(1234);

  logger.info('server is running at http://127.0.0.1:1234');
}

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Test your system

run your system,
open a browser,
go to http://127.0.0.1:1234 and
see the result.

There are some limitations

You can only run systems that uses Node.js native apis.