Hi Pierre,

You are right, I had the same ACCEPT port mentioned three times – something that worked for several hours and then caused problems – I guess the symptom was the error with libeay32.dll (I am hoping it was that and nothing else). Actually I needed it only once and then my ESME application could establish many connections to it.

Also, I disabled:

TCP_NODELAY options in my stunnel.conf as you suggested and also disabled sslVersion=all as suggested by the carrier.

Since making these changes, things have been stable so I am not getting a different version of the libeay32.dll 1.0.0.1 at this time.

;often useful :

;sslVersion=all

;-----------

Here is my example stunne.conf

; Sample stunnel configuration file by Michal Trojnara 2002-2006

; Some options used here may not be adequate for your particular configuration

; Certificate/key is needed in server mode and optional in client mode

; The default certificate is provided only for testing and should not

; be used in a production environment

cert = carrier.cer

key = carrier.key

; Some performance tunings

;socket = l:TCP_NODELAY=1

;socket = r:TCP_NODELAY=1

; TURN THIS ON TO MAX

; Some debugging stuff useful for troubleshooting

debug = 7

output = stunnel.log

; Service-level configuration

; Have this only once and ESME application can establish several connections (as many as allowed by the

; carrier SMSC, that is)

[ssmpp1]

accept = 127.0.0.1:3003

connect = <DESTINATION_IP_REMOTE>:<DESTIONATION_PORT_REMOTE>

; Use it for client mode

client = yes

; Suggested by client

options = all

;Suggested by client to disable this

;often useful :

;sslVersion=all

;-----------

; vim:ft=dosini

Thanks a lot for your help!

Apurva

---

From: Pierre DELAAGE [mailto:delaage.pierre@free.fr]
Sent: Thursday, November 18, 2010 11:36 PM
To: Pathak, Apurva (Apu); stunnel-users@mirt.net
Subject: Re: Error: faulting application stunnel.exe, version 0.0.0.0, faulting module libeay32.dll, version 1.0.0.1, fault address 0x0007331e.

Hi Apurva,
For us to help, we need your stunnel.conf.
Is this bug NEW ? was there a recent change either on client-side or server-side ?

Can you try with LAST (recent versions) of openssl (there are TWO ! 100b and 098p) ?
...

HMMMMMMMM: may I have understood something :
in your stunnel.conf you seem to have bound MANY stunnel SERVICES to the SAME listening port 3005.
This is what I consider an error !
service1 SHOULD listen on 3005, service2 on 3006 etc...

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp1 bound to 127.0.0.1:3005

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp1 opened FD=224

2010.11.18 10:42:11 LOG7[5732:7408]: FD=228 in non-blocking mode

2010.11.18 10:42:11 LOG7[5732:7408]: Option SO_REUSEADDR set on accept socket

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp2 bound to 127.0.0.1:3005

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp2 opened FD=228

2010.11.18 10:42:11 LOG7[5732:7408]: FD=244 in non-blocking mode

2010.11.18 10:42:11 LOG7[5732:7408]: Option SO_REUSEADDR set on accept socket

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp3 bound to 127.0.0.1:3005

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp3 opened FD=244

Hope this helps (it should),
Pierre


Le 19/11/2010 01:47, Pathak, Apurva (Apu) a écrit :

Hello,

I am getting an error with using stunnel 4.34. I am running on Windows Server 2003. Unfortunately, this has cropped up only after we went to production, so there is no turning back now. Urgent help is needed.

Reporting queued error: faulting application stunnel.exe, version 0.0.0.0, faulting module libeay32.dll, version 1.0.0.1, fault address 0x0007331e.

I am using stunnel to encrypt SMPP (or SMS text messages).

The above error is occurring very frequently when I run stunnel in Windows Service mode. Once this happens and I go through the same two steps to re-establish binds with my wireless carrier (1) restart stunnel (2) restart my SMPP service. The following happens (1) Stunnel starts with: Option SO_REUSEADDR set on accept socket (2) I am not able to establish binds error in stunnel.log: SSL_accept: 140760FC: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol

When the above error is happening, the way to get things to work is to go: Start > Programs > stunnel > Start Service and things still work (Stunnel runs as me in user mode and not as “SYSTEM”, stunnel does still start with Option SO_REUSEADDR set on accept socket but binds starts OK). Of course, as soon as I log off the server, everything stops so this of not much use, but this is working for some reason.

Complete stunnel.log:

2010.11.18 10:42:11 LOG5[5732:7408]: Reading configuration from file stunnel.conf

2010.11.18 10:42:11 LOG7[5732:7408]: PRNG seeded successfully

2010.11.18 10:42:11 LOG6[5732:7408]: Could not load DH parameters from carrier.cer

2010.11.18 10:42:11 LOG7[5732:7408]: ECDH initialized

2010.11.18 10:42:11 LOG7[5732:7408]: Certificate: carrier.cer

2010.11.18 10:42:11 LOG7[5732:7408]: Certificate loaded

2010.11.18 10:42:11 LOG7[5732:7408]: Key file: carriernew.key

2010.11.18 10:42:11 LOG7[5732:7408]: Private key loaded

2010.11.18 10:42:11 LOG7[5732:7408]: SSL context initialized for service ssmpp1

2010.11.18 10:42:11 LOG6[5732:7408]: Could not load DH parameters from carrier.cer

2010.11.18 10:42:11 LOG7[5732:7408]: ECDH initialized

2010.11.18 10:42:11 LOG7[5732:7408]: Certificate: carrier.cer

2010.11.18 10:42:11 LOG7[5732:7408]: Certificate loaded

2010.11.18 10:42:11 LOG7[5732:7408]: Key file: carriernew.key

2010.11.18 10:42:11 LOG7[5732:7408]: Private key loaded

2010.11.18 10:42:11 LOG7[5732:7408]: SSL context initialized for service ssmpp2

2010.11.18 10:42:11 LOG7[5732:7408]: Configuration SSL options: 0x80000FFF

2010.11.18 10:42:11 LOG7[5732:7408]: SSL options set: 0x80000FFF

2010.11.18 10:42:11 LOG7[5732:7408]: Certificate: carrier.cer

2010.11.18 10:42:11 LOG7[5732:7408]: Certificate loaded

2010.11.18 10:42:11 LOG7[5732:7408]: Key file: carriernew.key

2010.11.18 10:42:11 LOG7[5732:7408]: Private key loaded

2010.11.18 10:42:11 LOG7[5732:7408]: SSL context initialized for service ssmpp3

2010.11.18 10:42:11 LOG5[5732:7408]: Configuration successful

2010.11.18 10:42:11 LOG5[5732:7408]: No limit detected for the number of clients

2010.11.18 10:42:11 LOG7[5732:7408]: FD=224 in non-blocking mode

2010.11.18 10:42:11 LOG7[5732:7408]: Option SO_REUSEADDR set on accept socket

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp1 bound to 127.0.0.1:3005

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp1 opened FD=224

2010.11.18 10:42:11 LOG7[5732:7408]: FD=228 in non-blocking mode

2010.11.18 10:42:11 LOG7[5732:7408]: Option SO_REUSEADDR set on accept socket

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp2 bound to 127.0.0.1:3005

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp2 opened FD=228

2010.11.18 10:42:11 LOG7[5732:7408]: FD=244 in non-blocking mode

2010.11.18 10:42:11 LOG7[5732:7408]: Option SO_REUSEADDR set on accept socket

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp3 bound to 127.0.0.1:3005

2010.11.18 10:42:11 LOG7[5732:7408]: Service ssmpp3 opened FD=244

2010.11.18 10:42:11 LOG5[5732:7408]: stunnel 4.34 on x86-pc-mingw32-gnu with OpenSSL 1.0.0a 1 Jun 2010

2010.11.18 10:42:11 LOG5[5732:7408]: Threading:WIN32 SSL:ENGINE Sockets:SELECT,IPv6

2010.11.18 10:42:24 LOG7[5732:6160]: Service ssmpp1 accepted FD=292 from 127.0.0.1:4214

2010.11.18 10:42:24 LOG7[5732:6160]: Creating a new thread

2010.11.18 10:42:24 LOG7[5732:6160]: New thread created

2010.11.18 10:42:24 LOG7[5732:2140]: Service ssmpp1 started

2010.11.18 10:42:24 LOG7[5732:2140]: FD=292 in non-blocking mode

2010.11.18 10:42:24 LOG7[5732:2140]: Option TCP_NODELAY set on local socket

2010.11.18 10:42:24 LOG5[5732:2140]: Service ssmpp1 accepted connection from 127.0.0.1:4214

2010.11.18 10:42:24 LOG7[5732:2140]: SSL state (accept): before/accept initialization

2010.11.18 10:42:24 LOG7[5732:6160]: Service ssmpp1 accepted FD=316 from 127.0.0.1:4215

2010.11.18 10:42:24 LOG7[5732:6160]: Creating a new thread

2010.11.18 10:42:24 LOG7[5732:6904]: Service ssmpp1 started

2010.11.18 10:42:24 LOG7[5732:6160]: New thread created

2010.11.18 10:42:24 LOG7[5732:6904]: FD=316 in non-blocking mode

2010.11.18 10:42:24 LOG7[5732:6904]: Option TCP_NODELAY set on local socket

2010.11.18 10:42:24 LOG5[5732:6904]: Service ssmpp1 accepted connection from 127.0.0.1:4215

2010.11.18 10:42:24 LOG7[5732:6904]: SSL state (accept): before/accept initialization

2010.11.18 10:42:24 LOG7[5732:6160]: Service ssmpp1 accepted FD=340 from 127.0.0.1:4216

2010.11.18 10:42:24 LOG7[5732:6160]: Creating a new thread

2010.11.18 10:42:24 LOG7[5732:6160]: New thread created

2010.11.18 10:42:24 LOG7[5732:5592]: Service ssmpp1 started

2010.11.18 10:42:24 LOG7[5732:5592]: FD=340 in non-blocking mode

2010.11.18 10:42:24 LOG7[5732:5592]: Option TCP_NODELAY set on local socket

2010.11.18 10:42:24 LOG5[5732:5592]: Service ssmpp1 accepted connection from 127.0.0.1:4216

2010.11.18 10:42:24 LOG7[5732:5592]: SSL state (accept): before/accept initialization

2010.11.18 10:42:24 LOG3[5732:5592]: SSL_accept: 140760FC: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol

2010.11.18 10:42:24 LOG5[5732:5592]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket

2010.11.18 10:42:24 LOG7[5732:5592]: Service ssmpp1 finished (2 left)

2010.11.18 10:42:34 LOG3[5732:2140]: SSL_accept: 140760FC: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol

2010.11.18 10:42:34 LOG5[5732:2140]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket

2010.11.18 10:42:34 LOG7[5732:2140]: Service ssmpp1 finished (1 left)

2010.11.18 10:42:44 LOG3[5732:6904]: SSL_accept: 140760FC: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol

2010.11.18 10:42:44 LOG5[5732:6904]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket

2010.11.18 10:42:44 LOG7[5732:6904]: Service ssmpp1 finished (0 left)

2010.11.18 10:43:04 LOG7[5732:6160]: Service ssmpp1 accepted FD=332 from 127.0.0.1:4237

2010.11.18 10:43:04 LOG7[5732:6160]: Creating a new thread

2010.11.18 10:43:04 LOG7[5732:6160]: New thread created

2010.11.18 10:43:04 LOG7[5732:2256]: Service ssmpp1 started

2010.11.18 10:43:04 LOG7[5732:2256]: FD=332 in non-blocking mode

2010.11.18 10:43:04 LOG7[5732:2256]: Option TCP_NODELAY set on local socket

2010.11.18 10:43:04 LOG5[5732:2256]: Service ssmpp1 accepted connection from 127.0.0.1:4237

2010.11.18 10:43:04 LOG7[5732:2256]: SSL state (accept): before/accept initialization

2010.11.18 10:43:04 LOG7[5732:6160]: Service ssmpp1 accepted FD=308 from 127.0.0.1:4238

2010.11.18 10:43:04 LOG7[5732:6160]: Creating a new thread

2010.11.18 10:43:04 LOG7[5732:6160]: New thread created

2010.11.18 10:43:04 LOG7[5732:6544]: Service ssmpp1 started

2010.11.18 10:43:04 LOG7[5732:6544]: FD=308 in non-blocking mode

2010.11.18 10:43:04 LOG7[5732:6544]: Option TCP_NODELAY set on local socket

2010.11.18 10:43:04 LOG5[5732:6544]: Service ssmpp1 accepted connection from 127.0.0.1:4238

2010.11.18 10:43:04 LOG7[5732:6544]: SSL state (accept): before/accept initialization

2010.11.18 10:43:04 LOG7[5732:6160]: Service ssmpp1 accepted FD=356 from 127.0.0.1:4239

2010.11.18 10:43:04 LOG7[5732:6160]: Creating a new thread

2010.11.18 10:43:04 LOG7[5732:6160]: New thread created

2010.11.18 10:43:04 LOG7[5732:7256]: Service ssmpp1 started

2010.11.18 10:43:04 LOG7[5732:7256]: FD=356 in non-blocking mode

2010.11.18 10:43:04 LOG7[5732:7256]: Option TCP_NODELAY set on local socket

2010.11.18 10:43:04 LOG5[5732:7256]: Service ssmpp1 accepted connection from 127.0.0.1:4239

2010.11.18 10:43:04 LOG7[5732:7256]: SSL state (accept): before/accept initialization

2010.11.18 10:43:04 LOG3[5732:2256]: SSL_accept: 140760FC: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol

2010.11.18 10:43:04 LOG5[5732:2256]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket

2010.11.18 10:43:04 LOG7[5732:2256]: Service ssmpp1 finished (2 left)

2010.11.18 10:43:09 LOG3[5732:7256]: SSL_accept: 140760FC: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol

2010.11.18 10:43:09 LOG5[5732:7256]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket

2010.11.18 10:43:09 LOG7[5732:7256]: Service ssmpp1 finished (1 left)

2010.11.18 10:43:12 LOG3[5732:6544]: SSL_accept: Peer suddenly disconnected

2010.11.18 10:43:12 LOG5[5732:6544]: Connection reset: 0 bytes sent to SSL, 0 bytes sent to socket

2010.11.18 10:43:12 LOG7[5732:6544]: Service ssmpp1 finished (0 left)

Thanks,

Apurva