[dev] How to keep IMP from blocking other apps

[Sebastian Birnbach]

Group,

sorry for the confusion I caused. The preferred solution to the given
problem is to configure a short timeout to IMP's IMAP server connection.
Other than I was convinced this is possible out of the box in file
backends.local.php, parameter 'timeout' inside the $servers['imap']
definition.



Am Mi., 9. Jan. 2019 um 16:54 Uhr schrieb Sebastian Birnbach <
birnbacs at gmail.com>:

> Sure, and anonymization is not even required as SMTP server credentials
> are configured in the console.
> Here is my backends.local.php:
>
>
> // IMAP server
> $servers['imap'] = array(
>     // ENABLED by default; will connect to IMAP port on local server
>     'disabled' => false,
>     'name' => '2B IMAP Server',
>     'hostspec' => 'localhost',
>     'hordeauth' => true,
>     'protocol' => 'imap',
>     'port' => 143,
>     'smtp' => array(
>         'horde_auth' => true, // use the global settings from
> Settings->Horde->Mailer
>     ),
>     'secure' => 'tls',
> );
>
>
>
> I have not yet figured out when exactly IMP will talk to the mail server.
> I observe that I cannot use the user preferences or the admin console
> without waiting for every click.
> Oh, except for logging in, that is unaffected.
>
> There has been some unfortunate discussion in the bug tracking system, so
> please let me clarify again:
> my question is not about authentication. Both Horde and mail server
> authentication are fine. No problem here, not even related to it.
> My issue is about Horde operation when the mail server fails or responds
> very slowly. In this case IMP is very slow and seems to drag other Horde
> apps down.
>
> Kind regards
>
>   Seb.
>
>
>
>
>
>
> Am Mi., 9. Jan. 2019 um 16:10 Uhr schrieb Ralf Lang <lang at b1-systems.de>:
>
>> Hi, can you please post an anonymized imp config? (backends.local.php,
>> conf.php)
>>
>> imp should not try to authenticate just because of a pushApp() during
>> init of unrelated pages
>>
>> portal might be trickier as some portal blocks depend on imp
>>
>>
>>
>> Am 09.01.19 um 16:04 schrieb Sebastian Birnbach:
>> > In my Horde installation, authentication is done against Horde's prefs
>> > container, i.e. an SQL server. IMP is configured to create its mail
>> server
>> > session on passed-through user login credentials
>> > (imp/config/backends.ocal.php: 'hordeauth' => true).
>> >
>> > The mail server is a local dovecot installation. It checks the passed
>> user
>> > credentials against the same SQL server (SQL table 'horde_users';
>> password
>> > scheme: SHA-512 for both Horde and dovecot).
>> >
>> > Please note that the mail server is NOT used for Horde authentication.
>> >
>> > Idea of the configuration was to make sure a Horde session can always be
>> > created (except if the SQL server dies, in which case Horde won't run
>> > anyways) and users can conveniently be administered through the Horde
>> > console.
>> >
>> > This all worked out and functions as intended. But.
>> >
>> >
>> >
>> > If the mail server dies or, as I recently experienced , takes ~30
>> seconds
>> > for a response (my misconfiguration), a page request to *any* Horde app
>> > will not be served until IMP has spoken to the mail server. This can be
>> > observed even with most unrelated pages like the user prefs.
>> >
>> > That is, once the mail server dies or responds slowly, the rest of
>> Horde is
>> > quite unusable.
>> >
>> >
>> >
>> > I opened RFE #14885, asking for adding an IMP timeout, only to be told
>> that
>> > my problem was a configuration issue.
>> >
>> > So, can anybody think of a configuration that keeps IMP from blocking
>> other
>> > apps? I imagine a system configuration where mail is not the only
>> > application of importance should be quite common.
>> >
>> > Kind regards
>> >
>> >   Seb.
>>
>