[Bug 141029] New: Disconnected IMAP stalls on large folders

[Simon Edwards]

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http://bugs.kde.org/show_bug.cgi?id=141029         
           Summary: Disconnected IMAP stalls on large folders
           Product: kmail
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs kde org
        ReportedBy: simon simonzone com


Version:            (using KDE KDE 3.5.5)
Installed from:    Ubuntu Packages
OS:                Linux

When syncronising disconnected IMAP with the server, the whole process stalls.

I've placed a wireshark trace of the conversion between kmail and the bincimap server here:

    http://www.simonzone.com/software/kmail_bincimap_stall_bug.txt

Both sides of the conversion are in the same file, so it is a bit hard to see who is saying what, but if you look at line 8282:

    * 720 FETCH (FLAGS (\Seen95 LIST "" "kde-bugs"

You can see that bincimap was busy with a long reply, but kmail jumps in and issues command 95 before bincimap is ready. After that the syncronisation between the two just falls apart. I think that the big delay that I saw was the two programs waiting for each other.