Problem with Perl script after moving from a Windows/Apache Server to a UNIX server.
I have a Perl script that worked fine before moving it to justhost.com. It was on a Windows/Apache server. Just host is using UNIX. Other Perl scripts on other sites that were also moved work fine so I know Perl is functioning.
The script is called cwrmail.pl and is located in my cgi-bin.
When I run the script I get a 500 error. The script is called from a CGI Post form on another page. I have narrowed it down to the "read" statement...as follows:
If I comment out this section and add a "print" function, it works and prints to the screen so I am positive this section is the problem. The "read" statement is correct. The chmod is 755 for both the script and the cgi-bin.I have tried uploading via FTP in both ASCII and binary to no avail. I have edited in both NotePad ++ and WordPad.
The support at justhost is pretty good except they seem to be lacking Perl techs. I don't think this is a Perl issue but really not sure!
Anyone have any other ideas??
Thanks,
Bob
Moderator's Comments:
Code tags for code, please.
Last edited by Corona688; 04-18-2012 at 04:22 PM..
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LEARN ABOUT REDHAT
cgi::fast
CGI::Fast(3pm) Perl Programmers Reference Guide CGI::Fast(3pm)NAME
CGI::Fast - CGI Interface for Fast CGI
SYNOPSIS
use CGI::Fast qw(:standard);
$COUNTER = 0;
while (new CGI::Fast) {
print header;
print start_html("Fast CGI Rocks");
print
h1("Fast CGI Rocks"),
"Invocation number ",b($COUNTER++),
" PID ",b($$),".",
hr;
print end_html;
}
DESCRIPTION
CGI::Fast is a subclass of the CGI object created by CGI.pm. It is specialized to work well with the Open Market FastCGI standard, which
greatly speeds up CGI scripts by turning them into persistently running server processes. Scripts that perform time-consuming initializa-
tion processes, such as loading large modules or opening persistent database connections, will see large performance improvements.
OTHER PIECES OF THE PUZZLE
In order to use CGI::Fast you'll need a FastCGI-enabled Web server. Open Market's server is FastCGI-savvy. There are also freely redis-
tributable FastCGI modules for NCSA httpd 1.5 and Apache. FastCGI-enabling modules for Microsoft Internet Information Server and Netscape
Communications Server have been announced.
In addition, you'll need a version of the Perl interpreter that has been linked with the FastCGI I/O library. Precompiled binaries are
available for several platforms, including DEC Alpha, HP-UX and SPARC/Solaris, or you can rebuild Perl from source with patches provided in
the FastCGI developer's kit. The FastCGI Perl interpreter can be used in place of your normal Perl without ill consequences.
You can find FastCGI modules for Apache and NCSA httpd, precompiled Perl interpreters, and the FastCGI developer's kit all at URL:
http://www.fastcgi.com/
WRITING FASTCGI PERL SCRIPTS
FastCGI scripts are persistent: one or more copies of the script are started up when the server initializes, and stay around until the
server exits or they die a natural death. After performing whatever one-time initialization it needs, the script enters a loop waiting for
incoming connections, processing the request, and waiting some more.
A typical FastCGI script will look like this:
#!/usr/local/bin/perl # must be a FastCGI version of perl!
use CGI::Fast;
&do_some_initialization();
while ($q = new CGI::Fast) {
&process_request($q);
}
Each time there's a new request, CGI::Fast returns a CGI object to your loop. The rest of the time your script waits in the call to new().
When the server requests that your script be terminated, new() will return undef. You can of course exit earlier if you choose. A new
version of the script will be respawned to take its place (this may be necessary in order to avoid Perl memory leaks in long-running
scripts).
CGI.pm's default CGI object mode also works. Just modify the loop this way:
while (new CGI::Fast) {
&process_request;
}
Calls to header(), start_form(), etc. will all operate on the current request.
INSTALLING FASTCGI SCRIPTS
See the FastCGI developer's kit documentation for full details. On the Apache server, the following line must be added to srm.conf:
AddType application/x-httpd-fcgi .fcgi
FastCGI scripts must end in the extension .fcgi. For each script you install, you must add something like the following to srm.conf:
FastCgiServer /usr/etc/httpd/fcgi-bin/file_upload.fcgi -processes 2
This instructs Apache to launch two copies of file_upload.fcgi at startup time.
USING FASTCGI SCRIPTS AS CGI SCRIPTS
Any script that works correctly as a FastCGI script will also work correctly when installed as a vanilla CGI script. However it will not
see any performance benefit.
EXTERNAL FASTCGI SERVER INVOCATION
FastCGI supports a TCP/IP transport mechanism which allows FastCGI scripts to run external to the webserver, perhaps on a remote machine.
To configure the webserver to connect to an external FastCGI server, you would add the following to your srm.conf:
FastCgiExternalServer /usr/etc/httpd/fcgi-bin/file_upload.fcgi -host sputnik:8888
Two environment variables affect how the "CGI::Fast" object is created, allowing "CGI::Fast" to be used as an external FastCGI server.
(See "FCGI" documentation for "FCGI::OpenSocket" for more information.)
FCGI_SOCKET_PATH
The address (TCP/IP) or path (UNIX Domain) of the socket the external FastCGI script to which bind an listen for incoming connections
from the web server.
FCGI_LISTEN_QUEUE
Maximum length of the queue of pending connections.
For example:
#!/usr/local/bin/perl # must be a FastCGI version of perl!
use CGI::Fast;
&do_some_initialization();
$ENV{FCGI_SOCKET_PATH} = "sputnik:8888";
$ENV{FCGI_LISTEN_QUEUE} = 100;
while ($q = new CGI::Fast) {
&process_request($q);
}
CAVEATS
I haven't tested this very much.
AUTHOR INFORMATION
Copyright 1996-1998, Lincoln D. Stein. All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
Address bug reports and comments to: lstein@cshl.org
BUGS
This section intentionally left blank.
SEE ALSO
CGI::Carp, CGI
perl v5.8.0 2002-06-01 CGI::Fast(3pm)