Don't know what the problem is... so just two suggestions that might help to narrow down on the issue:

• Check if you can actually read the raw query string from STDIN (before instantiating the CGI object), like this

  if ($ENV{REQUEST_METHOD} eq 'POST') {
      my $n = read STDIN, my $query, $ENV{CONTENT_LENGTH};
      warn $! unless defined $n;  # (-> check error_log)
      # ... check $query
  }
  [download]

  (just for debugging purposes, of course — handling query strings yourself is generally considered a no no :)

• Try CGI::Simple instead of CGI.pm.  It's more or less a drop-in replacement, as long as you stick to the OO style usage.

Those tests might help to figure out whether it's maybe an obscure bug with the CGI module (not entirely impossible), or if it's that the socket (or the pipe from apache to the CGI process) is being closed prematurely for whatever reason, or some such.

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.