[horde] IMAP Connection failure

[Simon Wilson]

A couple of times over the last week the horde 4 IMAP client has thrown this:

A fatal error has occurred
Error connecting to IMAP server: [0]
1. Horde_Imap_Client_Base->openMailbox() /var/www/horde4/imp/mailbox.php:87
2. Horde_Imap_Client_Socket->_openMailbox()  
/usr/share/pear/Horde/Imap/Client/Base.php:803
3. Horde_Imap_Client_Base->login()  
/usr/share/pear/Horde/Imap/Client/Socket.php:777
4. Horde_Imap_Client_Socket->_login()  
/usr/share/pear/Horde/Imap/Client/Base.php:597
5. Horde_Imap_Client_Socket->_connect()  
/usr/share/pear/Horde/Imap/Client/Socket.php:268
6. Horde_Imap_Client_Base->_exception()  
/usr/share/pear/Horde/Imap/Client/Socket.php:438

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_Imap_Client_Exception Object
(
     [_previous:private] =>
     [details] =>
     [message:protected] => Error connecting to IMAP server: [0]
     [string:private] =>
     [code:protected] => 11
     [file:protected] => /usr/share/pear/Horde/Imap/Client/Base.php
     [line:protected] => 219
     [trace:private] => Array
         (
             [0] => Array
                 (
                     [file] => /usr/share/pear/Horde/Imap/Client/Socket.php
                     [line] => 438
                     [function] => _exception
                     [class] => Horde_Imap_Client_Base
                     [type] => ->
                     [args] => Array
                         (
                             [0] => Error connecting to IMAP server: [0]
                             [1] => SERVER_CONNECT
                         )

                 )

             [1] => Array
                 (
                     [file] => /usr/share/pear/Horde/Imap/Client/Socket.php
                     [line] => 268
                     [function] => _connect
                     [class] => Horde_Imap_Client_Socket
                     [type] => ->
                     [args] => Array
                         (
                         )

                 )

             [2] => Array
                 (
                     [file] => /usr/share/pear/Horde/Imap/Client/Base.php
                     [line] => 597
                     [function] => _login
                     [class] => Horde_Imap_Client_Socket
                     [type] => ->
                     [args] => Array
                         (
                         )

                 )

             [3] => Array
                 (
                     [file] => /usr/share/pear/Horde/Imap/Client/Socket.php
                     [line] => 777
                     [function] => login
                     [class] => Horde_Imap_Client_Base
                     [type] => ->
                     [args] => Array
                         (
                         )

                 )

             [4] => Array
                 (
                     [file] => /usr/share/pear/Horde/Imap/Client/Base.php
                     [line] => 803
                     [function] => _openMailbox
                     [class] => Horde_Imap_Client_Socket
                     [type] => ->
                     [args] => Array
                         (
                             [0] => INBOX
                             [1] => 2
                         )

                 )

             [5] => Array
                 (
                     [file] => /var/www/horde4/imp/mailbox.php
                     [line] => 87
                     [function] => openMailbox
                     [class] => Horde_Imap_Client_Base
                     [type] => ->
                     [args] => Array
                         (
                             [0] => IMP_Mailbox Object
                                 (
                                     [_cache:protected] => Array
                                         (
                                         )

                                     [_mbox:protected] => INBOX
                                 )

                             [1] => 2
                         )

                 )

         )

)


I realise what it is saying, that for some reason it has been unable  
to connect to the IMAP server (Cyrus IMAP is on a separate virtual  
server on the same hardware) - it's just such an ugly way to throw the  
error. An immediate refresh of the page brings back the Horde / Imp  
interface, so the comms interruption is only momentary.

Is there any way to config a timeout, or retry? Or maybe a more  
graceful way that the Horde IMAP client could handle an error of this  
type?

Simon.
-- 
Simon Wilson
M: 0400 12 11 16