[Akonadi] [Bug 315382] New: IMAP agent unable to reconnect after server disconnect

[Jacopo De Simoi]

https://bugs.kde.org/show_bug.cgi?id=315382

            Bug ID: 315382
           Summary: IMAP agent unable to reconnect after server disconnect
    Classification: Unclassified
           Product: Akonadi
           Version: 4.10
          Platform: openSUSE RPMs
                OS: Linux
            Status: CONFIRMED
          Severity: normal
          Priority: NOR
         Component: IMAP resource
          Assignee: ervin at kde.org
          Reporter: wilderkde at gmail.com
                CC: kdepim-bugs at kde.org, vkrause at kde.org

Server is  dovecot 2.1.12-r1 on gentoo running on a private server (I can offer
a test account if needed); after some time idling, the server disconnects the
client; here follows the server log.

Feb 18 13:01:51 anthrax dovecot: imap-login: Login: user=<jacopods>,
method=PLAIN, rip=151.24.23.51, lip=192.168.1.137, mpid=6830, TLS,
session=<n/aPff7VnACXGBcz>
Feb 18 13:39:16 anthrax dovecot: imap-login: Login: user=<jacopods>,
method=PLAIN, rip=151.24.23.51, lip=192.168.1.137, mpid=6914, TLS,
session=<rBZaA//V/wCXGBcz>
Feb 18 14:09:26 anthrax dovecot: imap(jacopods): Disconnected for inactivity
in=215 out=771293
Feb 18 14:09:26 anthrax dovecot: imap-login: Disconnected (no auth attempts in
0 secs): user=<>, rip=151.24.23.51, lip=192.168.1.137, TLS,
session=<3upCb//VQQCXGBcz>
Feb 18 14:09:56 anthrax dovecot: imap-login: Disconnected (no auth attempts in
30 secs): user=<>, rip=151.24.23.51, lip=192.168.1.137, TLS handshaking:
Disconnected, session=<smoLcf/VQgCXGBcz>
Feb 18 14:09:56 anthrax dovecot: imap-login: Disconnected (no auth attempts in
0 secs): user=<>, rip=151.24.23.51, lip=192.168.1.137, TLS handshaking:
Disconnected, session=<OrULcf/VQwCXGBcz>
Feb 18 14:09:56 anthrax dovecot: imap-login: Disconnected (no auth attempts in
0 secs): user=<>, rip=151.24.23.51, lip=192.168.1.137, TLS handshaking:
Disconnected, session=<aPALcf/VRACXGBcz>
Feb 18 14:10:26 anthrax dovecot: imap-login: Disconnected (no auth attempts in
30 secs): user=<>, rip=151.24.23.51, lip=192.168.1.137, TLS handshaking:
Disconnected, session=<nw7Vcv/VRQCXGBcz>
Feb 18 14:10:26 anthrax dovecot: imap-login: Disconnected (no auth attempts in
0 secs): user=<>, rip=151.24.23.51, lip=192.168.1.137, TLS handshaking:
Disconnected, session=<JUzVcv/VRwCXGBcz>
Feb 18 14:10:56 anthrax dovecot: imap-login: Disconnected (no auth attempts in
30 secs): user=<>, rip=151.24.23.51, lip=192.168.1.137, TLS handshaking:
Disconnected, session=<U2SedP/VSACXGBcz>

After the disconnection, akonadi apparently does not realize it has been
disconnected:

C: A000003 CAPABILITY
S: * CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT
SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND
UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC
ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS SPECIAL-USE
S: A000003 OK Capability completed.
C: A000004 NAMESPACE
S: * NAMESPACE ( ("" ".") ) ( ) ( )
S: A000004 OK Namespace completed.
C: A000005 LIST "" *
S: * LIST ( \HasNoChildren ) . fail2ban
S: * LIST ( \HasNoChildren ) . Outgoing security alerts
S: * LIST ( \HasNoChildren \Drafts ) . Drafts
S: * LIST ( \HasNoChildren ) . DenyHosts
S: * LIST ( \HasNoChildren \Sent ) . Sent Messages
S: * LIST ( \HasNoChildren ) . Deleted Messages
S: * LIST ( \HasNoChildren ) . INBOX
S: A000005 OK List completed.
C: A000006 SELECT "INBOX"
S: * FLAGS ( \Answered \Flagged \Deleted \Seen \Draft $REPLIED $ATTACHMENT
$NOTJUNK )
S: * OK Flags permitted. [ PERMANENTFLAGS ( \Answered \Flagged \Deleted \Seen
\Draft $REPLIED $ATTACHMENT $NOTJUNK \* )  ]
S: * 1097 EXISTS
S: * 0 RECENT
S: * OK First unseen. [ UNSEEN 1097  ]
S: * OK UIDs valid [ UIDVALIDITY 1360495157  ]
S: * OK Predicted next UID [ UIDNEXT 1110  ]
S: * OK No permanent modsequences [ NOMODSEQ  ]
S: A000006 OK Select completed. [ READ-WRITE  ]
C: A000007 IDLE
S: + idling
S: * OK Still here

and keeps saying OK Still here even after the disconnection

Reproducible: Always

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