How can I display all the HTTP Headers when using the DefaultHTTPClient?

Enumeration headerNames = request.getHeaderNames();
while(headerNames.hasMoreElements()) {
  String headerName = (String)headerNames.nextElement();
  out.println("" + headerName);
  out.println("" + request.getHeader(headerName));
}

https://stackoverflow.com/questions/12364555/how-can-i-display-all-the-http-headers-when-using-the-defaulthttpclient

How can I display all the HTTP Headers when using the DefaultHTTPClient?