title: what will happen if I use socket.setKeepAlive in Node.js server
body: <p>I just want to ask in <code>net</code> module of Node.js because I did not fully understand in the docs. what will happen if I implement the setKeepAlive() ?. what is the behavior of this setKeepAlive() ?</p>
  
  <pre><code>var net  = require('net');
  
  var server = net.createServer(function(socket){
  
      socket.setKeepAlive(true,60000); //1 min = 60000 milliseconds.
  
      socket.on('data',function(data){
          ///receiving data here
  
      });
      socket.on('end',function(data){
  
      });
  
  });
  
  server.listen(1333,'127.0.0.1', function () {
        console.log("server is listening in port 1333!");
  });
  </code></pre>
  
  <p>Thank you in advance.</p>