Re: [Proftpd-user] proftpd hanging

[Ryan T. <rt...@co...>]

Hi Peter,

The connection you draw between these errors and proftpd hanging isn't
readily apparent to me.

Can you provide more details on how you've been able to trigger proftpd
to hang with SSL/TLS connections?

Thanks,
Ryan


-----Original Message-----
From: Dr. Peter Voigt [mailto:pv...@uo...] 
Sent: Thursday, July 01, 2010 4:00 PM
To: pro...@li...
Subject: Re: [Proftpd-user] proftpd hanging

TJ, you're probably right - thanks for the corresponding bug
URL.

However, the error log is more or less a side problem. My main problem
is that there are no SSL/TLS connections possible any more with
mod_tls.

The new release 1.3.3a has been published today and the release notes
promise a fix of SSL_shutdown() errors. If your assumption is right,
my mod_tls related problems could be fixed as well. Immediately, I
build ProFTPD 1.3.3a against OpenSSL 0.9.8n. My test results are
a bit suprising:

- The SSL_shutdown() errors do still appear in the log files. The
  "TLSOptions EnableDiags" just gives some more information.

- mod_tls connections are possible again, ProFTPD is not hanging
  anymore.

I am happy to have back a working mod_tls enabled ProFTPD of
the latest release. Nevertheless, I would like to know, if I should
give an OpenSSL update a try. Latest sub 1.0.x version is 0.9.8o,
version 1.0.x still needs some time to become more stable.

By the way: ProFTPD 1.3.2e produces the same SSL_shutdown() log
errors as 1.3.3 and 1.3.3a do. My tests reveal the following mod_tls
versions:

ProFTPD    mod_tls
------------------
1.3.2e     2.2.2
1.3.3      2.4.1
1.3.3a     2.4.1

Regards,
Peter

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