Oops! I misunderstood what the OP wanted. My answer below works for Incoming headers not Outgoing*

The following works: 

use warnings;
use strict;

use LWP::UserAgent;

my $ua = LWP::UserAgent->new;

my $url = 'http://www.google.com';

print $ua->head($url)->as_string;

[download]
OUTPUT: 
HTTP/1.1 200 OK
Cache-Control: private, max-age=0
Connection: close
Date: Sat, 24 May 2014 04:17:59 GMT
Server: gws
Content-Type: text/html; charset=ISO-8859-1
Expires: -1
Alternate-Protocol: 80:quic
Client-Date: Sat, 24 May 2014 04:16:04 GMT
Client-Peer: 174.194.08.94:80
Client-Response-Num: 1
P3P: CP="This is not a P3P policy! See http://www.google.com/support/a
+ccounts/bin/answer.py?hl=en&answer=151657 for more info."
Set-Cookie: PREF=ID=6be73c938c0eb2c2:FF=0:TM=1400905079:LM=1400905079:
+S=d_WzZRSOQ6IZBvFA; expires=Mon, 23-May-2016 04:17:59 GMT; path=/; do
+main=.google.com.ng
Set-Cookie: NID=67=bU9SctXcLKJvZuBUQclTeWSIIJPWwD579z8_VsFNdP9AtU2dVx_
+5_rpEj_AGQIvcXVqeV3xka5H9aGSX_SN62h-bQ70smhmQ77HRB3o0uTsdUFnNeNU0u--x
+2IYvBj8c; expires=Sun, 23-Nov-2014 04:17:59 GMT; path=/; domain=.goog
+le.com.ng; HttpOnly
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block

[download]

* Update

If you tell me, I'll forget.
If you show me, I'll remember.
if you involve me, I'll understand.
--- Author unknown to me

In reply to Re: LWP is there any way to get "real" outgoing headers? by 2teez
in thread LWP is there any way to get "real" outgoing headers? by Anonymous Monk

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