nginx 支持perl cgi

执行/usr/local/fastcgi-wrapper.pl 出现的问题：

bind/listen: No such file or directory

解决办法：找到nginx 的pid文件所在目录，因为这个文件会在nginx的pid文件下建相关的文件，从而使perl-cgi和nginx结合，而默认在/var/run/nginx目录下，因为个人更改或者是其他原因，修改到了别的目录下。我们编辑这个文件把目录改到nginx新的pid文件所在目录下即可。要nginx支持perl-cgi和apache支持perl-cgi所要安装的包是不一样的。在nginx下要安装： perl-FCGI， perl-FCGI-ProcManager 还要到网上下载： fastcgi-wrapper.pl 利用这个来管理perl-cgi

nginx-perlcgi启动文件：#!/usr/bin/perl

use FCGI;
#perl -MCPAN -e 'install FCGI'
use Socket;
use POSIX qw(setsid);
#use Fcntl;

require 'syscall.ph';

&daemonize;

#this keeps the program alive or something after exec'ing perl scripts
END() { } BEGIN() { }
*CORE::GLOBAL::exit = sub { die "fakeexit\nrc=".shift()."\n"; };
eval q{exit};
if ($@) {
        exit unless $@ =~ /^fakeexit/;
};

&main;

sub daemonize() {
    chdir '/'                 or die "Can't chdir to /: $!";
    defined(my $pid = fork)   or die "Can't fork: $!";
    exit if $pid;
    setsid                    or die "Can't start a new session: $!";
    umask 0;
}

sub main {
        $socket = FCGI::OpenSocket( "127.0.0.1:8999", 10 ); #use IP sockets
        #$socket = FCGI::OpenSocket( "/var/run/nginx/perl_cgi-dispatch.sock", 10 ); #use UNIX sockets - user running this script must have w access to the 'nginx' folder!!
        $request = FCGI::Request( \*STDIN, \*STDOUT, \*STDERR, \%req_params, $socket );
        if ($request) { request_loop()};
            FCGI::CloseSocket( $socket );
}

sub request_loop {
        while( $request->Accept() >= 0 ) {
           
           #processing any STDIN input from WebServer (for CGI-POST actions)
           $stdin_passthrough ='';
           $req_len = 0 + $req_params{'CONTENT_LENGTH'};
           if (($req_params{'REQUEST_METHOD'} eq 'POST') && ($req_len != 0) ){
                my $bytes_read = 0;
                while ($bytes_read < $req_len) {
                        my $data = '';
                        my $bytes = read(STDIN, $data, ($req_len - $bytes_read));
                        last if ($bytes == 0 || !defined($bytes));
                        $stdin_passthrough .= $data;
                        $bytes_read += $bytes;
                }
            }

            #running the cgi app
if ( (-x $req_params{SCRIPT_FILENAME}) &&  #can I execute this?
                 (-s $req_params{SCRIPT_FILENAME}) &&  #Is this file empty?
                 (-r $req_params{SCRIPT_FILENAME})     #can I read this file?
            ){
                pipe(CHILD_RD, PARENT_WR);
                my $pid = open(KID_TO_READ, "-|");
                unless(defined($pid)) {
                        print("Content-type: text/plain\r\n\r\n");
                        print "Error: CGI app returned no output - Executing $req_params{SCRIPT_FILENAME} failed !\n";
                        next;
                }
                if ($pid > 0) {
                        close(CHILD_RD);
                        print PARENT_WR $stdin_passthrough;
                        close(PARENT_WR);

                        while(my $s = ) { print $s; }
                        close KID_TO_READ;
                        waitpid($pid, 0);
                } else {
                        foreach $key ( keys %req_params){
                           $ENV{$key} = $req_params{$key};
                        }
                        # cd to the script's local directory
                        if ($req_params{SCRIPT_FILENAME} =~ /^(.*)\/[^\/]+$/) {
                                chdir $1;
                        }

                        close(PARENT_WR);
                        close(STDIN);
                        #fcntl(CHILD_RD, F_DUPFD, 0);
                        syscall(&SYS_dup2, fileno(CHILD_RD), 0);
                        #open(STDIN, "<&CHILD_RD");
                        exec($req_params{SCRIPT_FILENAME});
                        die("exec failed");
                }
            }
            else {
                print("Content-type: text/plain\r\n\r\n");
                print "Error: No such CGI app - $req_params{SCRIPT_FILENAME} may not exist or is not executable by this process.\n";
            }

        }
}