Dear all,

I had some difficulty to upload large files (>20MB) with SSL connection. I think it is also related to https://elog.psi.ch/elogs/Forum/68636

During debuging, I found that, when uploading large files, ssl connection is dropped since 'SSL_read' function returns -1.

But it doesn't alway mean broken connection. It may be "SSL_ERROR_WANT_READ".

I changed the "server_loop" function in the source code to "continue" when it is SSL_ERROR_WANT_READ. And it fixed the problem.

Here is my code.

## elogd.c "server_loop" function L30031

                        if (FD_ISSET(_sock, &readfds)) {
#ifdef HAVE_SSL
                          if (_ssl_flag){
                            i = SSL_read(_ssl_con, net_buffer + len, net_buffer_size - len);
                            if(i<=0){
                              int ssl_error=SSL_get_error(_ssl_con,i);    ## check ssl error code
                              if(ssl_error==SSL_ERROR_WANT_READ||ssl_error==SSL_ERROR_WANT_WRITE) continue;    ## if ssl wants more, continue
                            }
                          }
                          else
#endif
                            i = recv(_sock, net_buffer + len, net_buffer_size - len, 0);
 

I am ignorant about networking. Some experts on ssl connection would know a better way to deal with this problem.

Best,

HyonSan Seo

Your solution sounds quite good, I will incorporate them in the distribution.

Stefan

Today I succeeded with the help of L.JR to produce a new RPM which contains SSL, KRB5, PAM and LDAP support. It's uploaded to https://elog.psi.ch/elog/download/RPMS/elog-3.1.4-2.el7.x86_64.rpm

Hi. 

I am an IT guy of the AMS collaboration at CERN. We have been using your wonderful elog software for about 10 years now. Thanks! It served us so well that I guess we never got in touch with you. 

Recently we have upgraded it (probably for the first time in years) up to the version ELOG V3.1.4-4936b76.

Since then, we have a particular problem. And finally, I managed to reproduce it.

So, when I edit a record and click the "Submit" button it goes back to the summary view (as usual, as before) but it does not really save the entry. And it shows that the record is still being edited. I can actually click "back" in the browser and not to lose the modifications (otherwise, if I try to edit and steal the lock, it's lost). 

I will try to figure out where the problem is coming from. The most verbose mode of the elog server I've found is just GET-POST lines, not helpful. Is there a debug mode? 

Also, we ran httpd configured with the elogd as a virtual host (proxy).

Any help is very appreciated. 

Cheers, 

Andrey

Hi again. We have solved our problem! 

It was caused by a non-defined mod_auth_openidc configuration parameter:

# Interval in seconds after which the session will be invalidated when no interaction has occurred.

# When not defined, the default is 300 seconds.

#OIDCSessionInactivityTimeout <seconds>

As a guess... This somehow makes elogd to forget a user who is editing an entry. And then, clicking "Submit" button makes elogd to start a new session? 

Hi,

Since few days I Notice that I've some data who disappear from ELOG (software).

I find them on ELog/Logbooks, but can't view them in the application ELOG !

Is there a solution ?

Thanks.

Oh! I can view all data but only from the PC where ELOG is Installed !

From the other PC data missed.

The solution is in the reindex