From: Diego Guillen <diego_antispam@...>
Date: 2009-03-14T21:11:56+09:00
Subject: Re: Windows cgihandler Error: Premature end of script headers

Kevin Layman wrote:
> Any suggestions at all on this would be greatly appreciated.

Hi had the same problem recently in Windows (with Ruby 1.8.6-26), after 
my script was already working in Ubuntu Linux.

I'm surprised that no one has provided an answer to this problem yet.

There could be several factors involved:
* your Windows security policies levels;
* what program gets associated with the execution of cgi scripts.

Doing a bit of debugging, I located the problem down to the last line on 
the file: c:\ruby\lib\ruby\1.8\webrick\httpservlet\cgi_runner.rb
where is says:  exec ENV["SCRIPT_FILENAME"]

I replaced that line with the following code:

# --- from here ---
Ruby = File::join(::Config::CONFIG['bindir'],
                        ::Config::CONFIG['ruby_install_name'])
Ruby << ::Config::CONFIG['EXEEXT']

if /mswin|bccwin|mingw/ =~ RUBY_PLATFORM
  exec "#{Ruby}", ENV["SCRIPT_FILENAME"]
else
  exec ENV["SCRIPT_FILENAME"]
end
# --- to here ---

This just builds a constant Ruby with the full path to "ruby.exe", and 
(if you're running on Windows) passes it as an extra first parameter 
"c:\ruby\bin\ruby.exe" , to the Kernel.exec() method.

Save the file and restart the server. It worked for me.


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