sTunnel client connecting to load balanced URL - stunnel 5.02 on x86-pc-msvc-1500 platform

Hi all,

I have a situation where I'm trying to use sTunnel as the client to connect
to a service on a secure URL, but the hiccup is that the secure URL is load
balanced.

 

If a do an nslookup on the URL, the response comes back as it being an
alias.

 

Non-authoritative answer:

Name:    eu1571393051174.ssl.ondemand.com

Address:  155.56.210.164

Aliases:  l4884-iflmap.hcisbp.eu1.hana.ondemand.com

 

Looking at the sTunnel log, it resolves to the IP of the server. But the IP
itself does not host the service so I'm getting http:503 errors.

 

2018.03.16 14:44:44 LOG7[18796]: Service [ssl-OSRdev] (FD=564) bound to
0.0.0.0:8085

2018.03.16 14:44:55 LOG7[18796]: Service [ssl-OSRdev] accepted (FD=572) from
192.168.0.22:61093

2018.03.16 14:44:55 LOG7[18796]: Creating a new thread

2018.03.16 14:44:55 LOG7[18796]: New thread created

2018.03.16 14:44:55 LOG7[30864]: Service [ssl-OSRdev] started

2018.03.16 14:44:55 LOG5[30864]: Service [ssl-OSRdev] accepted connection
from 192.168.0.22:61093

2018.03.16 14:44:55 LOG6[30864]: s_connect: connecting 155.56.210.164:443

2018.03.16 14:44:55 LOG7[30864]: s_connect: s_poll_wait 155.56.210.164:443:
waiting 10 seconds

2018.03.16 14:44:56 LOG5[30864]: s_connect: connected 155.56.210.164:443

2018.03.16 14:44:56 LOG5[30864]: Service [ssl-OSRdev] connected remote
server from 192.168.0.32:30269

2018.03.16 14:44:56 LOG7[30864]: Remote socket (FD=588) initialized

2018.03.16 14:44:56 LOG7[30864]: SNI: sending servername:
l4884-iflmap.hcisbp.eu1.hana.ondemand.com

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): before/connect
initialization

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv2/v3 write client
hello A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 read server
hello A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 read server
certificate A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 read server key
exchange A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 read server
certificate request A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 read server done
A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 write client
certificate A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 write client key
exchange A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 write
certificate verify A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 write change
cipher spec A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 write finished A

2018.03.16 14:44:56 LOG7[30864]: SSL state (connect): SSLv3 flush data

2018.03.16 14:44:57 LOG7[30864]: SSL state (connect): SSLv3 read finished A

2018.03.16 14:44:57 LOG7[30864]:    1 items in the session cache

2018.03.16 14:44:57 LOG7[30864]:    1 client connects (SSL_connect())

2018.03.16 14:44:57 LOG7[30864]:    1 client connects that finished

2018.03.16 14:44:57 LOG7[30864]:    0 client renegotiations requested

2018.03.16 14:44:57 LOG7[30864]:    0 server connects (SSL_accept())

2018.03.16 14:44:57 LOG7[30864]:    0 server connects that finished

2018.03.16 14:44:57 LOG7[30864]:    0 server renegotiations requested

2018.03.16 14:44:57 LOG7[30864]:    0 session cache hits

2018.03.16 14:44:57 LOG7[30864]:    0 external session cache hits

2018.03.16 14:44:57 LOG7[30864]:    0 session cache misses

2018.03.16 14:44:57 LOG7[30864]:    0 session cache timeouts

2018.03.16 14:44:57 LOG7[30864]: Peer certificate was cached (3826 bytes)

2018.03.16 14:44:57 LOG6[30864]: SSL connected: new session negotiated

2018.03.16 14:44:57 LOG6[30864]: Negotiated TLSv1/SSLv3 ciphersuite:
ECDHE-RSA-AES128-GCM-SHA256 (128-bit encryption)

2018.03.16 14:44:57 LOG6[30864]: Compression: null, expansion: null

2018.03.16 14:44:58 LOG6[30864]: SSL socket closed (SSL_read)

2018.03.16 14:44:58 LOG7[30864]: Sent socket write shutdown

2018.03.16 14:44:58 LOG5[30864]: Connection closed: 1730 byte(s) sent to
SSL, 274 byte(s) sent to socket

2018.03.16 14:44:58 LOG7[30864]: Remote socket (FD=588) closed

2018.03.16 14:44:58 LOG7[30864]: Local socket (FD=572) closed

2018.03.16 14:44:58 LOG7[30864]: Service [ssl-OSRdev] finished (0 left)

2018.03.16 14:44:58 LOG7[30864]: str_stats: 3 block(s), 4294962489 data
byte(s), 150 control byte(s)

2018.03.16 14:44:58 LOG7[30864]: str_stats: 20 byte(s) at
..\src\network.c:413

2018.03.16 14:44:58 LOG7[30864]: str_stats: 20 byte(s) at
..\src\network.c:412

2018.03.16 14:44:58 LOG7[30864]: str_stats: 20 byte(s) at
..\src\network.c:411

 

I have tested the service using SoapUI and it works.

 

Is it possible to have sTunnel follow the URL redirection?

 

 

Regards, Tony

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