title: how to close already opened TCP sockets in server using node JS
body: <p>I trying to close already opened socket at server end but i didn't get any info regarding how to close.</p>
  <p>Is there any way to close already opened TCP sockets in server using node</p>
  <p>in server client model, due to some issue the connection got closed and unfortunately server don't know that the connection got closed, client initiated new connection then at server end - it will create new connection. so here i want to close already opened (old) connection</p>
  <p>how to delete the old socket is my query. i want to delete it using node JS - is it possible ?</p>