Hello Monks, I am trying to extract a list of URLs for all subdomains of the domain "foo.com" from a very messy DB dump. Here's my code and some sample data:

while (<DATA>) {
        my @urls = ( $_ =~ /(https?\:\/\/.*?\.foo\.com)/g);
        foreach my $url (@urls) {

        print "$url\n" if $1;
    }

}

__DATA__
http://www.foo.com/fishnuts
http://smtp.foo.com https://www.foo.com/?(bunch-of-stuff):{}https://sv
+n.foo.com/docs
https://yahoo.de/?search:{width}-https://www.foo.com
https://google.com https://foo.com:(More-random-stuff)https://yahoo.de
+::http://pubdocs.foo.com/top/index.html
[download]

The desired result would be:

http://www.foo.com
http://smtp.foo.com
https://www.foo.com
https://svn.foo.com
https://www.foo.com
https://foo.com
http://pubdocs.foo.com
[download]

However, that regex does not work with the last two lines of data, as it also matches starting from the first "http". I tried this:

/(https?\:\/\/(?!http.)*?\.foo\.com)/g
[download]

But get "matches null string many times in regex"

Thanks for any help!