On Thu, Jul 05, 2018 at 09:58:33AM +0000, Spies, Will wrote:
I've been trying to get Stunnel to work for some time now. I have avoided using the mail list - but I see no recourse now. I think I've tried just about every setting I could find. I appear to be getting a connection issue - but as you will see the log just doesn't indicate clearly what is going on. The behavior is my client is failing to get a connection through Stunnel to my backend. The log appears to be closing a socket (but can't tell which one frontend or backend).
Actually the log says "TLS socket closed (SSL_read)", which means that the "read some bytes from the secure socket" operation said "there are no bytes to read, the other side closed the connection", meaning your client, the one that negotiates the TLS connection with stunnel, has closed the connection immediately after stunnel considered it negotiated. The next line in the log, "0 byte(s) sent to TLS, 0 byte(s) sent to socket", says that the client did indeed not even try to send any data over the established secure connection or receive any data from it, it just closed the connection immediately after stunnel thought they had formed a chummy relationship.
Is there any way you could get your client program to log verbosely what it is trying to do over the secure connection? Are there any messages on that side?
G'luck, Peter