Trying to use libopendkim

Hi All,

I'm exploring libopendkim ability to sign and verify messages as a separate
module and wrote a code snippet that does not work

I always get an error at line 83 saying that message format is invalid.

Here's the code snippet:

http://pastie.org/1622025

I understand that doing something completely wrong, but found no code
examples to make it right, so would appreciate any help.

-- 
Regards,
Alex