>> Stunnel v5.54 (local) halts during tunnel setup with stunnel v4.56 (remote)

FYI.  stunnel-5.55b1-win64-installer.exe does not halt during tunnel setup.  

Thanks!

<Snip><Snip>
[ ] Running on Windows 6.2
[ ] No limit detected for the number of clients
[.] stunnel 5.55 on x64-pc-mingw32-gnu platform
[.] Compiled/running with OpenSSL 1.1.1b  26 Feb 2019
[.] Reading configuration from file ...
[.] UTF-8 byte order mark detected
..
[ ] Initializing service [..]
[ ] Ciphers: ..
[ ] TLSv1.3 ...
[ ] TLS options: ..
[ ] Loading certificate from file: 
[ ] Certificate loaded from file: 
[ ] Loading private key from file: 
[ ] Private key loaded from file: 
[ ] Private key check succeeded
[.] Configuration successful
[ ] Binding service 
[ ] Listening file descriptor created 
[ ] Setting accept socket options 
[ ] Service bound to 
2019.05.23 20:26:54 LOG6[cron]: Executing cron jobs
2019.05.23 20:26:54 LOG6[cron]: Cron jobs completed in 0 seconds
2019.05.23 20:27:09 LOG5[0]: Service accepted connection from 
2019.05.23 20:27:09 LOG6[0]: s_connect: connecting 
2019.05.23 20:27:09 LOG6[0]: CERT: 
2019.05.23 20:27:09 LOG6[0]: CERT: 
2019.05.23 20:27:09 LOG5[0]: Certificate accepted at 
2019.05.23 20:27:09 LOG6[0]: Session id: 
2019.05.23 20:27:09 LOG6[0]: TLS connected: new session negotiated
2019.05.23 20:27:09 LOG6[0]: TLSv1.2 ciphersuite: 
2019.05.23 20:27:16 LOG6[0]: Read socket closed 
2019.05.23 20:27:16 LOG6[0]: SSL_shutdown successfully sent close_notify alert
2019.05.23 20:27:16 LOG3[0]: transfer: s_poll_wait: TIMEOUTclose exceeded: closing
2019.05.23 20:27:16 LOG5[0]: Connection closed: 
</Snip>

On Friday, May 17, 2019, 9:18:41 a.m. EDT, Brent Kimberley <[email protected]> wrote:


Hi.
Stunnel v5.54 (local) halts during tunnel setup with stunnel v4.56 (remote)
whereas stunnel v5.53 (local) successfully establishes tunnels with stunnel v4.56 (remote).  
Debug 7 (local) doesn't detect any issues.  
    Does remote 4.56 need to be upgraded?  
    Does local 5.54 need to be patched?

Best Regards,
BK

v5.54 x v4.56
[local]
s_connect: s_poll_wait <someip>:443: waiting 10 seconds
halt...
[remote]
2019.05.17 08:47:34 LOG5[13009:140578290554624]: Service [httpsx] accepted connection from 
2019.05.17 08:52:35 LOG6[13009:140578290554624]: init_ssl: s_poll_wait: TIMEOUTbusy exceeded: sending reset
2019.05.17 08:52:35 LOG5[13009:140578290554624]: Connection reset: 0 byte(s) sent to SSL, 0 byte(s) sent to socket

v5.53 x v4.56
[local]
2019.05.17 08:57:18 LOG7[0]: s_connect: s_poll_wait <someip>:443: waiting 10 seconds
2019.05.17 08:57:18 LOG5[0]: s_connect: connected <someip>:443
...
[remote]
2019.05.17 09:11:10 LOG5[13009:140578290333440]: Service [httpsx] accepted connection from 
2019.05.17 09:11:10 LOG5[13009:140578290333440]: Certificate accepted: depth=....