You don't show us how you save and restore the data to and from disk. Does the following code work for you?

use strict;
use Test::More tests => 1;

# setup, to be provided by you

my $response = $useragent->get($url);
my $stored_as_file = $response->as_string;
my $restored_response = HTTP::Response->parse( $stored_as_file );

is $stored_as_file, $restored_response->as_string, "->as_string() is i
+dempotent";

[download]

If that code works for you and prints "OK", then the problem is with your saving and restoring, most likely because you're running on a system with a Unicode locale, or Win32. Most likely, you're missing a 

binmode $fh;

[download]
after your 
open my $fh, ">", $temp_response_name or die "Couldn't create '$temp_r
+esponse_name': $!";

[download]
.

In reply to Re: How to reconstruct HTTP::Response from file properly by Corion
in thread How to reconstruct HTTP::Response from file properly by isync

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.