[kmail2] [Bug 316107] big regression: kmail IMAP connection and message display problems

[Martin Steigerwald]

https://bugs.kde.org/show_bug.cgi?id=316107

Martin Steigerwald <Martin at Lichtvoll.de> changed:

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                 CC|                            |Martin at Lichtvoll.de

--- Comment #27 from Martin Steigerwald <Martin at Lichtvoll.de> ---
Dear Marc, thank you for reporting the original issue. Also thanks to everyone
who confirmed it. I see some comments where I do not see a direct relation to
this original bug report, thus I am just treating this as the original issue of
opening too many connections to the IMAP server.

With KDEPIM 4.14 and Akonadi 1.13 compiled from current 4.14 and 1.13 branches
I cannot reproduce this issue. Also with 4.14.2 and 1.13 debian packaged I
didn´t see this.

I just used my test IMAP Dovecot account with 37000 messages spread over
several folders and clicked around it like mad, yet i only see:

merkaba:~> netstat -tanp | grep imap
tcp        0      0 10.0.0.88:32830         194.150.191.11:143      VERBUNDEN  
1644/akonadi_imap_r
tcp        0      0 10.0.0.88:33342         194.150.191.11:143      VERBUNDEN  
1644/akonadi_imap_r

Also client port numbers appear to be stable, so its not opening a new
connection every time. You can verify this with:

watch -n1 "netstat -tanp | grep imap"

Also the response is almost instant. At work with Exchange IMAP I do get
delays, but well, I attribute them to crappy Exchange IMAP implementation.

I am using a self-signed certificate for mail still.

So, can you still reproduce this with KMail from KDEPIM 4.14 and Akonadi 1.13?
If so, please share the details of your setup. Please also note whether are you
using more than one instance of KMail on different machines accessing the same
account, if so, please also see bug #322199 referenced below.

If you did report anything else to this bug report that doesn´t relate to using
too many IMAP connections, please consider opening a new separate report about
it.

Also I suggest to separate any longer delays in displaying mails from the IMAP
connection issue unless you are sure they are directly related. So if you are
still experiencing long delays between clicking on a mail and seeing its
contains, yet do not see many connections open, please report this as a
separate issue.

Also note related bugs:

Bug 316840 - imap resource starts crazy connect / disconnect cycle to mail
server
which appears to be fixed.

Bug 322199 - akonadi_imap spams perdition log when two clients are active and
gets restarted all the time
Which I didn´t try to reproduce again anymore but someone still reproduced with
4.14.2

Thank you, Martin

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