Checking if a port is open

<p>I am trying to check the ports of localhost and see which ones are open. How should I go about this? Do I use the Dial function?</p> <p>Thanks for the help!</p> <hr/>**评论：**<br/><br/>djherbis: <pre><p>If you&#39;re planning on binding the port then just do net.Listen. it&#39;ll fail if it&#39;s already bound</p></pre>anonfunction: <pre><p>Here you go: </p> <p><a href="https://gist.github.com/montanaflynn/b59c058ce2adc18f31d6" rel="nofollow">https://gist.github.com/montanaflynn/b59c058ce2adc18f31d6</a></p></pre>