uWebSockets.js/examples/AutomaticPortSelection.js

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/* Same as HelloWorld, but with automatic port selection. */
const uWS = require('../dist/uws.js');
let port = 0;
const app = uWS./*SSL*/App({
key_file_name: 'misc/key.pem',
cert_file_name: 'misc/cert.pem',
passphrase: '1234'
}).get('/*', (res, req) => {
res.end('Hello World!');
}).listen(port, (token) => {
if (token) {
// retrieve listening port
port = uWS.us_socket_local_port(token);
console.log('Listening to port ' + port);
} else {
console.log('Failed finding available port');
}
});