Another version of "incomplete headers (0 bytes) "

Hi All, 

I have a problem getting any kind of sample FCGI script to work.  I have found lots of examples of the error message I'm getting, but none that seem to match the circumstances I'm seeing.

I've tried a few 'Hello World' type scripts, including one using CGI::Fast from CGI.pm, but I'll use this one, from man FCGI, as an example:

---
#!/usr/bin/perl
use FCGI;
           my $count = 0;
           my $request = FCGI::Request();

           while($request->Accept() >= 0) {
               print("Content-type: text/html\r\n\r\n", ++$count);
           }
---

On requesting the script I get a 500, along with this report in the error_log:

---
[warn] FastCGI: (dynamic) server "/usr/local/apache2/htdocs/test.fcgi" started (pid 1033)
[error] [client ??.??.??.??] FastCGI: incomplete headers (0 bytes) received from server "/usr/local/apache2/htdocs/test.fcgi"
---

Incidentally, the version using CGI::Fast give me:

---
Use of uninitialized value in ref-to-glob cast at /usr/lib/perl5/site_perl/5.8.3/i386-linux-thread-multi/FCGI.pm line 28
---

But I'm not worried about that for now.  In my httpd.conf, I have:

---
AddHandler fastcgi-script fcg fcgi fpl
---

The ExecCGI option has been set for the folder containing the test script.  When Apache starts, it reports:

---
[notice] FastCGI: process manager initialized (pid 1023)
[notice] Apache/2.0.52 (Unix) mod_fastcgi/2.4.2 configured -- resuming normal operations
---

After the script does its 500,  I have a look at what's still running:

---
nobody    1023  0.0  0.7  5052 1852 ?        S    17:08   0:00 /usr/local/apache2/bin/fcgi- -k start
nobody    1033  0.0  0.8  4556 2272 ?        S    17:10   0:00 /usr/bin/perl /usr/local/apache2/htdocs/test.fcgi
---

The script executes fine from within the shell, and in the browser as a plain cgi.  I have considered having a look at cgi-fcgi to test things further, but having to resort to this would make the whole effort less worthwhile.

How do you find out what port the FCGI server is listening on to try a telnet?  I found this: "The application (fastcgi library) assumes the listening port was put on file descriptor 0 when the process was started", but I'm too ignorant to understand how that helps me.

I have the following software versions:

Fedora Core 1
Linux  2.4.22-1.2188
Apache 2.0.52 
mod_fastcgi 2.4.2
FCGI 0.64
Perl 5.8.3

Thanks for listening anyone who read this far!  Any suggestions or pointers would be most welcome.

Best Regards,

James

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