[stunnel-users] How to forward client's IP address with stunnel on Windows

Dear stunnel's users, I have search on google and try many things on stunnel's configuration to forward ip address, but nothing works ? I have found this option in the FAQ : transparent = source But it seems that it doesn't work on windows ?

Line 22: "transparent = source": Specified option name is not valid here Server is down

Is there any solution to my problem ? Have I done something wrong ? Best regards, Manu Egen