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JimmXinu · 01-29-2016, 10:52 AM

I've had a couple different FanFicFare users report that they're getting an SSLV3_ALERT_HANDSHAKE_FAILURE error when connecting to the site forums.sufficientvelocity.com. on Mac OSX. I don't see the problem on Windows.

My research suggests that this is likely caused by the SSL library not correctly switching to TLS from SSLv3 (or possibly not using Server Name Indication (SNI)?)

Python 2.7.9 or newer should work from what I've read. On Windows, Calibre is using 2.7.9 already.

Does Calibre carry it's own SSL libraries? Or does it depend on the installed OS libraries? I don't think that this is something that can be addressed in the plugin.

FanFicFare Mail List discussion (hijacked subject, SSL problem starts at Jan 21).

FanFicFare Forum discussion.

I believe that running this from command line should test the problem without needing to install FanFicFare:

Code:

calibre-debug -c "import urllib2 as u2 ; opener = u2.build_opener() ; opener.addheaders = [('User-Agent', '')] ; print opener.open('https://forums.sufficientvelocity.com').read()[:200]"

Any help or suggestions would be appreciated.

01-29-2016, 10:52 AM	#1
JimmXinu Plugin Developer Posts: 6,999 Karma: 4604635 Join Date: Dec 2011 Location: Midwest USA Device: Kobo Clara Colour running KOReader	SSL Error Connecting on Mac OSX I've had a couple different FanFicFare users report that they're getting an SSLV3_ALERT_HANDSHAKE_FAILURE error when connecting to the site forums.sufficientvelocity.com. on Mac OSX. I don't see the problem on Windows. My research suggests that this is likely caused by the SSL library not correctly switching to TLS from SSLv3 (or possibly not using Server Name Indication (SNI)?) Python 2.7.9 or newer should work from what I've read. On Windows, Calibre is using 2.7.9 already. Does Calibre carry it's own SSL libraries? Or does it depend on the installed OS libraries? I don't think that this is something that can be addressed in the plugin. FanFicFare Mail List discussion (hijacked subject, SSL problem starts at Jan 21). FanFicFare Forum discussion. I believe that running this from command line should test the problem without needing to install FanFicFare: Code: calibre-debug -c "import urllib2 as u2 ; opener = u2.build_opener() ; opener.addheaders = [('User-Agent', '')] ; print opener.open('https://forums.sufficientvelocity.com').read()[:200]" Any help or suggestions would be appreciated.