title: How to read file in nodejs Server sent from Web Client
body: <p>I am new to nodeJS and Java Script.
  I need to implement a mechanism to read a file in nodeJS server sent from the Web Client.</p>
  
  <p>Can anyone give me some pointer how to do that?
  I found <code>readFileSync()</code> in nodeJS filesystem which can read the contents of a file. But how to retrieve the file from the request sent by Web Browser? And if the file is very big, then what is the best way to read the contents in that file in nodeJS?</p>