Check if a given port is listening.
npm i test-port
- Check if localhost is listening port 80
const test_port = require('test-port');
test_port(80, (isWorking) => {
if (isWorking) {
console.log('port 80 is listening!');
} else {
console.log('port 80 is not listening!');
}
});- Check if google.com accepts connection on port 8080.
const test_port = require('test-port');
// Check if google.com accepts connections to port 8080
test_port(8080, 'google.com', (isWorking) => {
if (isWorking) {
console.log('google.com accepts connections on port 8080')
} else {
console.log('google.com do not accepts connections on port 8080')
}
});- It also returns a promise
const test_port = require('test-port');
test_port(80);
.done(() => {
console.log('port 80 is listening');
})
.catch(() => {
console.log('port 80 is not listening');
});