hi,

on 12.06.2012, Jürgen Echter wrote:
> the same for ssl_access.log:
> 
> 192.168.0.1 - - [12/Jun/2012:11:15:09 +0200] "GET 
> /SOGo/dav/m...@mymail.de/ HTTP/1.1" 501 677 "-" "Mozilla/5.0 (Windows NT 
> 5.1; rv:10.0.5) Gecko/20120605 Thunderbird/10.0.5 Lightning/1.2.1"
> 
> rewrite.log:
[…]

obviously you are doing some rewriting … mod_rewrite tends to turn
PROFIND https requests into GET ones, which caused the 501s in my case.

if you use the rewrites to deny unencrypted connections, it might be a
good idea to avoid them by explicitly forcing https in integrators'
extensions.rdf. something like

isi:updateURL="https://your.server:443/plugins/updates.php?plugin=%ITEM_ID%&version=%ITEM_VERSION%&platform=%PLATFORM%";

works, while just

isi:updateURL="https://your.server/plugins/updates.php?plugin=%ITEM_ID%&version=%ITEM_VERSION%&platform=%PLATFORM%";

doesn't.

hth,
t.
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