[stunnel-users] [PATCH] Address already in use (98) when binding to localhost

[Christian Kujau]

On Thu, 8 Feb 2018, Michał Trojnara wrote:
> Can you try:
> https://www.stunnel.org/downloads/beta/stunnel-5.45b2.tar.gz

Yes, this works. Stunnel comes up just fine w/o errors and binds to both 
the IPv4 and IPv6 address of "localhost":

$ stunnel-5.45b2 ~/stunnel.test
2018.02.08 19:36:11 LOG5[ui]: stunnel 5.45 on x86_64-pc-linux-gnu platform
2018.02.08 19:36:11 LOG5[ui]: Compiled/running with OpenSSL 1.1.0g-fips  2 Nov 2017
2018.02.08 19:36:11 LOG5[ui]: Threading:PTHREAD Sockets:POLL,IPv6 TLS:ENGINE,FIPS,OCSP,PSK,SNI Auth:LIBWRAP
2018.02.08 19:36:11 LOG5[ui]: Reading configuration from file /home/christian/stunnel.test
2018.02.08 19:36:11 LOG5[ui]: UTF-8 byte order mark not detected
2018.02.08 19:36:11 LOG5[ui]: FIPS mode disabled
2018.02.08 19:36:11 LOG4[ui]: Service [test] needs authentication to prevent MITM attacks
2018.02.08 19:36:11 LOG5[ui]: Configuration successful

$ grep -A4 ^\\[ ~/stunnel.test 
[test]
client          = yes
protocol        = smtp
accept          = localhost:12345
connect         = localhost:2025

> My main code repository is private.  There is also a public repository 
> based on official releases, but I guess this wasn't the point of your 
> question. https://github.com/mtrojnar/stunnel

Hm, yeah. I was indeed look for a -development tree to follow small 
changes more easily, w/o having to fetch whole tarballs. But maybe I'm 
just not used to shuffling tarballs around anymore, like one used to do 
before the age of Git :-)

Anyway, thanks for fixing this, and for maintaining stunnel.

Christian.
-- 
BOFH excuse #231:

We had to turn off that service to comply with the CDA Bill.