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icon5.gif   Server dropping SSL connection while uploading large files, posted by Erkcan Ozcan on Sat Jun 10 07:05:24 2017 
    icon2.gif   Re: Server dropping SSL connection while uploading large files, posted by Erkcan Ozcan on Wed Jun 28 19:37:10 2017 
       icon2.gif   Re: Server dropping SSL connection while uploading large files, posted by Andreas Warburton on Wed Jun 28 22:20:38 2017 
       icon2.gif   Re: Server dropping SSL connection while uploading large files, posted by Stefan Ritt on Thu Jun 29 08:36:03 2017 
Message ID: 68636     Entry time: Thu Jun 29 08:36:03 2017     In reply to: 68634
Icon: Reply  Author: Stefan Ritt  Author Email: stefan.ritt@psi.ch 
Category: Bug report  OS: Linux  ELOG Version: V3.1.3-aded4ae 
Subject: Re: Server dropping SSL connection while uploading large files 

One possibility is to run elog in non-SSL mode and put an Apache server in front of it. The Apache server can then do the SSL communication, and forward all requests to elog in plain text (non-SSL). This has been proven to work with large attachments, actually that's the way I use it.

I didn't find time to debug the SSL problem. If anybody is interested in doing so, the relevant code is in function server_loop() around line 30015 (SSL_read()).

Stefan

Erkcan Ozcan wrote:

Hi,

Could someone at least suggest how I could debug this problem myself? If I know where to start, perhaps I can fix it myself and contribute to the software.

Best,

e.

Erkcan Ozcan wrote:

Hi,

I am having trouble with uploading large (>0.5MB) files to elog. We click on upload and in a couple of seconds, the webbrowser complains that the server has dropped the connection.

Following the suggestions I found on these forums (https://midas.psi.ch/elogs/Forum/66753), I increased the timeout.tv_sec to 30 in three locations in elogd.c, but this did not help.

The problem is present in my old elog installation (from ~2 years ago), as well as the latest git snapshot from bitbucket that I cloned on June 10, 2017.

PS: Upload seems to work for non-secure configuration. It still takes a while to load, but it completes. However we prefer to use secure connections ( SSL = 1 ).
PS: Using nmap I looked at the latency to the relevant port, it can be as high as 0.5sec, but most often it is shorter.

Cheers,
e.

 

 

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