I want LWP::UserAgent to log the following information:

requested uri, time it took to fetch, content length and header length.

The following code works unless somebody uses :content_cb, in this case $content_length is zero, because the content is not included in the HTTP::Response object. Has somebody an idea to get the content-length anyway?

Here is my code. 

package LWP::UserAgent::Trace;

use Time::HiRes;
use Data::Dumper;
use base qw/LWP::UserAgent/;

sub send_request {
  my($self, $request, $arg, $size) = @_;

  my $t0 = [Time::HiRes::gettimeofday];
  my $response = $self->SUPER::send_request($request,$arg,$size);
  my $elapsed = Time::HiRes::tv_interval($t0); 

  my $content_length = length($response->content);
  my $header_length = length($response->headers_as_string);
  print STDERR sprintf "%s %f %d %d %d\n",
    $request->uri, $elapsed, $content_length,
    $header_length, $content_length+$header_length;

  return $response;
}

1;

[download]

In reply to LWP::UserAgent hacking by DaTa!

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.