Application crashes when reading from socket fails

[ralflang]

am trying to create Ingo filter rules, but getting authentication errors when saving the rule and when enabling the whitelist it crashes with following error
A fatal error has occurred

Error reading data from socket

in /opt/local/www/apache2/horde/vendor/horde/socket_client/lib/Horde/Socket/Client.php:207

1. require_once() /opt/local/www/apache2/horde/web/ingo/basic.php:3
2. Ingo_Basic_Base->__construct() /opt/local/www/apache2/horde/vendor/horde/ingo/basic.php:31
3. Ingo_Basic_Whitelist->_init() /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Basic/Base.php:49
4. Ingo_Factory_Script->activateAll() /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Basic/Whitelist.php:47
5. Ingo_Script_Base->activate() /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Factory/Script.php:200
6. Ingo_Transport_Timsieved->setScriptActive() /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Script/Base.php:407
7. Ingo_Transport_Timsieved->_connect() /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Transport/Timsieved.php:106
8. Horde\ManageSieve\Client->__construct() /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Transport/Timsieved.php:77
9. Horde\ManageSieve\Client->_handleConnectAndLogin() /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php:220
10. Horde\ManageSieve\Client->login() /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php:248
11. Horde\ManageSieve\Client->_cmdAuthenticate() /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php:397
12. Horde\ManageSieve\Client->_doCmd() /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php:622
13. Horde\ManageSieve\Client->_recvLn() /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php:987
14. Horde\Socket\Client->gets() /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php:940

Details

The full error message is logged in Horde's log file, and is shown below only to administrators. Non-administrative users will not see error details.

Horde\Socket\Client\Exception Object
(
[message:protected] => Error reading data from socket
[string:Exception:private] =>
[code:protected] => 0
[file:protected] => /opt/local/www/apache2/horde/vendor/horde/socket_client/lib/Horde/Socket/Client.php
[line:protected] => 207
[trace:Exception:private] => Array
(
[0] => Array
(
[file] => /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php
[line] => 940
[function] => gets
[class] => Horde\Socket\Client
[type] => ->
)

        [1] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php
                [line] => 987
                [function] => _recvLn
                [class] => Horde\ManageSieve\Client
                [type] => ->
            )

        [2] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php
                [line] => 622
                [function] => _doCmd
                [class] => Horde\ManageSieve\Client
                [type] => ->
            )

        [3] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php
                [line] => 397
                [function] => _cmdAuthenticate
                [class] => Horde\ManageSieve\Client
                [type] => ->
            )

        [4] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php
                [line] => 248
                [function] => login
                [class] => Horde\ManageSieve\Client
                [type] => ->
            )

        [5] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/managesieve/src/Client.php
                [line] => 220
                [function] => _handleConnectAndLogin
                [class] => Horde\ManageSieve\Client
                [type] => ->
            )

        [6] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Transport/Timsieved.php
                [line] => 77
                [function] => __construct
                [class] => Horde\ManageSieve\Client
                [type] => ->
            )

        [7] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Transport/Timsieved.php
                [line] => 106
                [function] => _connect
                [class] => Ingo_Transport_Timsieved
                [type] => ->
            )

        [8] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Script/Base.php
                [line] => 407
                [function] => setScriptActive
                [class] => Ingo_Transport_Timsieved
                [type] => ->
            )

        [9] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Factory/Script.php
                [line] => 200
                [function] => activate
                [class] => Ingo_Script_Base
                [type] => ->
            )

        [10] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Basic/Whitelist.php
                [line] => 47
                [function] => activateAll
                [class] => Ingo_Factory_Script
                [type] => ->
            )

        [11] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/ingo/lib/Basic/Base.php
                [line] => 49
                [function] => _init
                [class] => Ingo_Basic_Whitelist
                [type] => ->
            )

        [12] => Array
            (
                [file] => /opt/local/www/apache2/horde/vendor/horde/ingo/basic.php
                [line] => 31
                [function] => __construct
                [class] => Ingo_Basic_Base
                [type] => ->
            )

        [13] => Array
            (
                [file] => /opt/local/www/apache2/horde/web/ingo/basic.php
                [line] => 3
                [args] => Array
                    (
                        [0] => /opt/local/www/apache2/horde/vendor/horde/ingo/basic.php
                    )

                [function] => require_once
            )

    )

[previous:Exception:private] =>
[logged] => 1
[extraDetails:protected] =>
[isLogged:Horde\Exception\HordeException:private] =>
[_logLevel:protected] => 0

)

Expected: Reading from socket failed does not fatally crash the application but gives the user feedback he can act upon, i.e. retry