how to do between wodvpn and ultravnc ?? (wodVPN)

hello,

two peers, A and B.

the A peer has vncserver and it listen on 5900.
the B peer add a channel(TCPLocallisten) and set remote port to 5900.

then B peer use vncviewer and use ip(127.0.0.1) and port(specified port from channel) to make a connection to the vncserver.

finally, vncviewer shows
Connection failed - End of Stream
Possible causes:
-Another user is already listening on this ID
-Bad Connection

how to do ?

thank you for everything...