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=....