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detect-port

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detect-port

Node.js implementation of port detector

  • 2.1.0
  • latest
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
5M
decreased by-1.12%
Maintainers
3
Weekly downloads
 
Created

What is detect-port?

The detect-port npm package is a utility for detecting available network ports on a machine. It is useful for scenarios where you need to find an open port to start a server or service.

What are detect-port's main functionalities?

Detecting an available port

This feature allows you to check if a specific port is available. If the port is occupied, it suggests an alternative available port.

const detect = require('detect-port');

const port = 3000;
detect(port, (err, _port) => {
  if (err) {
    console.log(err);
  }
  if (port === _port) {
    console.log(`port ${port} was not occupied`);
  } else {
    console.log(`port ${port} was occupied, try port ${_port}`);
  }
});

Promise-based port detection

This feature provides a promise-based approach to detect an available port, making it easier to integrate with modern JavaScript code that uses async/await.

const detect = require('detect-port');

const port = 3000;
detect(port).then(_port => {
  if (port === _port) {
    console.log(`port ${port} was not occupied`);
  } else {
    console.log(`port ${port} was occupied, try port ${_port}`);
  }
}).catch(err => {
  console.log(err);
});

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Package last updated on 10 Dec 2024

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