How to open redirected url while running foolwing code in background

Prat824 has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks

I am trying to redirect to an html page while a script runs in the background. the browser waits 2-3 min for exec to finish before it displays redirected page.

print "Location: $outpage_url\n\n";
exec("$bin/somescript.pl");
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I have also tried system("$bin/somescript.pl &"); without success.

Comment on How to open redirected url while running foolwing code in background Download Code

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Re: How to open redirected url while running foolwing code in background by Corion (Patriarch) on Apr 22, 2009 at 10:00 UTC
Also see Watching Long Processes Through CGI for an implementation of the technique described by almut	[reply]
Re: How to open redirected url while running foolwing code in background by almut (Canon) on Apr 22, 2009 at 09:54 UTC
You need to fork a child process to run the background job, so the parent can send the redirection and terminate normally. Also, you'll need to close (or redirect to a file) STDOUT and STDERR in the child before the `exec()`, so the webserver will not wait for the pipes to the child (duplicated by the fork) to get closed. Update: something like this: `my $pid = fork(); die "Couldn't fork: $!" unless defined $pid; if ($pid) { # parent print "Location: $outpage_url\n\n"; } else { # $pid == 0 # child open STDOUT, ">>", "/path/to/some/logfile" or warn "Couldn't redir +ect STDOUT: $!"; open STDERR, ">>", "/path/to/some/logfile" or warn "Couldn't redir +ect STDERR: $!"; exec "$bin/somescript.pl"; exit; # just in case the exec failed }` [download]	[reply] [d/l] [select]