[horde] nginx rewrite problems

Fri Mar 27 13:19:43 UTC 2026

Hi Ruud,

1) The time sync issue is weird. Please make a backup of your database and
afterwards run horde-db-migration command again to make sure you are on the
right schema for kronolith.
2) Next, if you check using "composer outdated", you’ll see that there are
some modules that aren’t updated automatically. The first question is: is
it a good idea or not to also update “horde/horde-installer-plugin”,
“sabre/event”, “sabre/http”, “sabre/uri”, and “sabre/xml”?

You best run "composer why-not horde/horde-installer-plugin 3.3.1" to get
an idea why exactly it's not updated.

3) DAV
----

<?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns"
<http://sabredav.org/ns>>
  <s:sabredav-version>4.7.0</s:sabredav-version>
  <s:exception>Sabre\DAV\Exception</s:exception>
  <s:message>Circular dependency detected: Kronolith_Geo →
Kronolith_Geo</s:message>
</d:error>

Check your Horde Base App's conf.php if you have correctly configured your
geo driver ($conf['maps']['geo']) -  in the UI it's in
http://localhost/horde/admin/config/config.php under the "maps" tab.

On Fri, Mar 27, 2026 at 12:40 PM Ruud Baart <r.j.baart at prompt.nl> wrote:

> Hi Ralf,
>
> I’ll explain my question a bit further. A while ago, I switched from Horde
> 5 (which I’d been using for many years) to Horde 6. I was actually forced
> to do so because PHP 7 was causing increasing problems when used with other
> software.  The transition was far from smooth. Perhaps this was also due to
> my lack of familiarity with composer and Horde 6. Ultimately, I now have a
> stable Debian system, Trixie (13.4), running PHP 8.4. I’m using Nginx 1.26
> and PHP-FPM.
>
> There were still a few PHP errors with Horde/nginx, but it works. The
> issues I’ve been having over the past few weeks are related to
> Kronolith/DAV. The DAV calendars in Thunderbird are out of sync. The times
> keep shifting. A while back, this was caused by a Thunderbird bug in the
> local caching of the calendar. After updating to a new version of
> Thunderbird, the problem seemed to be resolved. In recent weeks, the
> problem has returned, much to the annoyance of the few users I still
> support. Appointments made via the web interface or the ActiveSync client
> do work properly. My first thought was that the existing rewrite rules in
> the Nginx configuration were no longer sufficient. After further
> consideration, I don’t actually think that’s the case.
>
> I suspect there's an issue with the time zone between Thunderbird and
> Kronolith. To troubleshoot the issue again, I decided to start by updating
> the Horde 6 environment. It seems that the developers are working very hard
> to achieve a stable Horde 6 environment. So I ran a "composer update".
> Immediately after that, the DAV synchronization stopped working.
>
> Since I have the chance to give some context 🙂: first, a few questions
> about the Horde 6 update. I did:
>
> composer require horde/kronolith dev-FRAMEWORK_6_0
> composer update
>
> Next, if you check using "composer outdated", you’ll see that there are
> some modules that aren’t updated automatically. The first question is: is
> it a good idea or not to also update “horde/horde-installer-plugin”,
> “sabre/event”, “sabre/http”, “sabre/uri”, and “sabre/xml”?  I believe that
> Sabre is the basis for DAV functionality. Since it doesn't update
> automatically via “composer update,” I'm not sure if updating these modules
> is a good idea. If the sabre modules need to be updated, it is not clear to
> me how that should be done. A simple composer update sabre/event doesn't
> update anything.
>
> There are no real messages why DAV synchronization stopped working. Debug
> in horde is E_ALL but I don't see errors. Not in nginx logging nor horde
> logging.
>
> Two errors, but they are not new:
>
> (1) after a request for syncing calander:
>
> 2026/03/27 09:47:43 [error] 2843694#2843694: *172335 readv() failed
> (104: Connection reset by peer) while reading upstream, client: 12.34.56.78, server: aa.bb.cc, request: "PUT
> /horde/rpc/calendars/user at domain.xy/calendar~aFTuBIgXZjXzg2GLq54ZNg3/04a82709-de6c-4f8e-ba33-5f1022ddf8df.ics
> HTTP/2.0" <PUT/horde/rpc/calendars/user at domain.xy/calendar~aFTuBIgXZjXzg2GLq54ZNg3/04a82709-de6c-4f8e-ba33-5f1022ddf8df.icsHTTP/2.0>, upstream: "fastcgi://unix:/run/php/php8.4-fpm.sock:",
> host: "aa.bb.cc"
>
> (2) Activesync heartbeat (I think)
>
> 2026/03/27 00:27:24 [error] 2843696#2843696: *118314 upstream timed out (110: Connection timed out) while reading
> response header from upstream, client: 12.34.56.78, server: aa.bb.cc, request:
> "POST /Microsoft-Server-ActiveSync?Cmd=Ping&User=user%40domain.xy&DeviceId=androidc123456&DeviceType=Android HTTP/1.1",
> upstream: "fastcgi://unix:/run/php/php8.4-fpm.sock", host: "aa.bb.cc"
>
> On my Android device  with a DAV client (DAVx5) I see a new error. The
> client won't sync and the debug information shows:
>
> HTTP REQUEST
> PUT https://aa.bb.cc/horde/rpc/calendars/user@domain.xy/calendar~aFTuBIgXZjXzg2GLq54ZNg3/04a82709-de6c-4f8e-ba33-5f1022ddf8df.ics
>
> HTTP RESPONSE
> <?xml version="1.0" encoding="utf-8"?>
> <d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns" <http://sabredav.org/ns>>
>   <s:sabredav-version>4.7.0</s:sabredav-version>
>   <s:exception>Sabre\DAV\Exception</s:exception>
>   <s:message>Circular dependency detected: Kronolith_Geo → Kronolith_Geo</s:message>
> </d:error>
>
> Before I can return to the problem with the incorrect hours in Thunderbird
> calender syncing must be working.  I need help with the syncing problem
> because I can't find with is wrong and/or why.
>
> When syncing is ok again I return to the Thunderbird calendar problem. I
> suppose it is a timezone problem between cache and DAV sync. But I'm not
> sure.
>
> Sorry, quite a long story.
> Op 27-3-2026 om 05:13 schreef Ralf Lang:
>
> Hello Ruud,
>
> can you provide some context? When you manually hit horde/rpc.php or
> /horde/rpc/ and enter your credentials what exactly happens or is shown?
>
>
> On Thu, Mar 26, 2026 at 3:37 PM Ruud Baart <r.j.baart at prompt.nl> wrote:
>
>> Hi,
>>
>> Horde 6 + nginx has been working reasonably well over the past few
>> weeks. No major issues. However kronolith gives me some problems, I
>> think there are time zone problems again. Possibly caused by Thunderbird.
>>
>> To solve these problems, I started with “composer update” yesterday.
>> Thing got worse and now the DAV isn't working properly anymore. It seems
>> to me that my rewrite rules in nginx.conf are no longer correct.
>> Apparently, something has changed.
>>
>> I'd like to see a current, working nginx configuration to compare it
>> with what I have. Maybe that will help me solve the problem.
>>
>>
>> Ruud Baart
>>
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