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Feature/443 find open port #564

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Feature/443 find open port #564

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71dd09d
added find-port for hot-server
erikyuzwa Dec 19, 2016
17b5399
updated server startup to check port(s)
erikyuzwa Dec 19, 2016
566c1c8
handle no available ports
erikyuzwa Dec 19, 2016
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1 change: 1 addition & 0 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -145,6 +145,7 @@
"cuid": "^1.3.8",
"eventify": "^2.0.0",
"express": "^4.13.4",
"find-port": "^2.0.1",
"fixed-data-table-2": "^0.7.7",
"highlight.js": "^8.9.1",
"marked": "^0.3.5",
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28 changes: 22 additions & 6 deletions server.js
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Expand Up @@ -3,10 +3,11 @@ import webpack from 'webpack';
import webpackDevMiddleware from 'webpack-dev-middleware';
import webpackHotMiddleware from 'webpack-hot-middleware';
import config from './webpack.dev.config.js';
import findPort from 'find-port';

const app = express(),
compiler = webpack(config),
PORT = 3001;
compiler = webpack(config);
let PORT;

app.use(webpackDevMiddleware(compiler, {
publicPath: config.output.publicPath,
Expand All @@ -23,11 +24,26 @@ app.use(webpackHotMiddleware(compiler, {
heartbeat: 10 * 1000
}));

app.listen(PORT, 'localhost', err => {
if (err) {
console.error(err);
// before binding our server to a port, check each port in the given range
// to ensure it's available. Upon return, just go ahead with the first element
findPort('localhost', [3001, 9000, 9001, 9002], (ports) => {

if (ports.length === 0) {
console.error(`This is rather embarrasing : none of the given ports are available`);
return;
}

console.log(`Listening at http://localhost:${PORT}`);
// make use of the first available port returned
PORT = ports[0];
app.listen(PORT, 'localhost', err => {
if (err) {
console.error(err);
return;
}

console.log(`Listening at http://localhost:${PORT}`);
});

});