Simple REST server

[dirkk0]

Hi,

I just came up with a somewhat crude implementation for a simple REST server for neu.

Following up on #315 I realized that both execCommand and spawnProcess won't terminate their respective processes when the app exits. So I kill a named process on startup and app.exit.

Example server code for nodejs (test-server.js):

var http = require('http');
var server = http.createServer(function (request, response) {
    response.writeHead(200, { "Content-Type": "text\plain" });
    if (request.method == "GET") {
        let r = parseInt(Math.random() * 100)
        response.end("GET request: " + r)
    } else {
        response.end("Undefined request.");
    }
});

server.listen(8000);
console.log("Server running on port 8000");

Minimal neu code (minimal.js in index.html)

let process_cmd = "node test-server.js"

async function onWindowClose() {
    kill_process()
    Neutralino.app.exit();
}

Neutralino.init();
Neutralino.events.on("windowClose", onWindowClose);

let kill_process = async () => {
    let temp = await Neutralino.os.execCommand(`pkill -xf '${process_cmd}'`);
}

let start = async () => {
    kill_process()
    let proc = await Neutralino.os.spawnProcess(process_cmd);
}

start()

Hope that makes sense and helps someone.

Cheers, Dirk