Hm. I have IO::Socket::SSL running on Linux box. I didn't even install it, it came bundled with perl (gentoo linux)

But as a side note, the openssl library really sucks for not providing direct support for non-blocking reading/writing. I guess thinking only in threads plays its role in design. Please, don't take it as complain. Just pointing out, that things are not simple even outside of Perl :)