title: How to send message FROM native app TO Chrome extension?
body: <p>I have read docs, but still cannot realize.
  I have desktop application written in C and Chrome extension. I know how to receive this message in my chrome extension:</p>
  
  <pre><code>port.onMessage.addListener(function(msg) {
      console.log("Received" + msg);
  });
  </code></pre>
  
  <p>What should I write in my C application to send a message to my chrome extension?
  Python/NodeJS examples are also appropriate.</p>