Fwd: Ncat SSL truble

[Тюхтин Владимир <tiukhtin () starline ru>]

-------- Исходное сообщение --------
Тема: Ncat SSL truble
Дата: 2015-10-13 17:50
От: Владимир Тюхтин <tiukhtin () starline ru>
Кому: fyodor () nmap org

Hello! My name is Vladimir. It looks like I find a ncat bug. I use ncat 
and all is fine. But 2 things is not working for me. First 
(critical)When I try to use SSL, I get Input/output error:

tar -cz Downloads/ubuntu-15.04-desktop-amd64.iso | ncat -v --ssl 
10.1.20.233 443  #on first host

ncat -l  -v 443 --ssl | tar -xz   #on second host


Output is:

Ncat: Version 6.40 ( http://nmap.org/ncat )
Ncat: SSL connection to 10.1.20.233:443.
Ncat: SHA-1 fingerprint: 54CC BC6C 38AD F60D 047A 6CA8 FB35 51C9 DE1C 
C390
Ncat: Input/output error.

But, if I add advansed option --sctp (USE SCTP like transport), it 
works fine - bug apperar only with TCP.

And another using UDP (not so critical)

tar -cz Downloads/ubuntu-15.04-desktop-amd64.iso | ncat -v -u 
10.1.20.233 7000    #on first host

ncat -l  -v -u 7000 | tar -xz   #on second host

Client sends just a part of file and freezes. Server side stay 
listening. With TCP (without SSL) it works fine.

What I do wrong?

Thank you!

--
Тюхтин Владимир
 Лесной 6а
 тел. 1185
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