Dear Maintainer,

In a situation where the IMAP server is unreachable for some reason,
offlineimap attempts to log a message describing the problem, but instead
seems to encounter a coding error in offlineimap itself.

The logs involved are:

 *** Processing account example
 Establishing connection to imap.example.com:993 (Remote)
 ERROR: While attempting to sync account 'example'
  local variable 'msg' referenced before assignment
 *** Finished account 'example' in 2:09

I have not investigated further, but will try when I get time.

Thanks for maintaining offlineimap!

noah

Hi Noah,

Can you please try to do the same with -dALL as an offlineimap cmdline
argument which might give more logs.

OfflineIMAP 7.3.0
  Licensed under the GNU GPL v2 or any later version (with an OpenSSL exception)
imaplib2 v3.05, Python v3.9.1+, OpenSSL 1.1.1j  16 Feb 2021
Now debugging for imap: IMAP protocol debugging
Now debugging for maildir: Maildir repository debugging
Now debugging for thread: Threading debugging
Now debugging for : Other offlineimap related sync messages
Account sync my_imap:
 [thread]: Register new thread 'Account sync my_imap' (account 'my_imap')
 [imap]: Using authentication mechanisms ['GSSAPI', 'XOAUTH2', 'CRAM-MD5', 'PLAIN', 'LOGIN']
 [maildir]: MaildirRepository initialized, sep is '.'
 *** Processing account my_imap
 Establishing connection to imap.example.com:993 (Remote)
 [imap]: Remote: level 'tls_compat', version 'None'
 [imap]:   51:42.31 Account sync my_imap imaplib2 version 3.05
 [imap]:   51:42.31 Account sync my_imap imaplib2 debug level 5, buffer level 3
 ERROR: While attempting to sync account 'my_imap'
  local variable 'msg' referenced before assignment
 ['  File "/usr/share/offlineimap3/offlineimap/accounts.py", line 298, in syncrunner\n    self.__sync()\n', '  File "/usr/share/offlineimap3/offlineimap/accounts.py", line 374, in __sync\n    remoterepos.getfolders()\n', '  File "/usr/share/offlineimap3/offlineimap/repository/IMAP.py", line 667, in getfolders\n    imapobj = self.imapserver.acquireconnection()\n', '  File "/usr/share/offlineimap3/offlineimap/imapserver.py", line 560, in acquireconnection\n    imapobj = imaplibutil.WrappedIMAP4_SSL(\n', '  File "/usr/share/offlineimap3/offlineimap/imaplibutil.py", line 191, in __init__\n    super(WrappedIMAP4_SSL, self).__init__(*args, **kwargs)\n', '  File "/usr/lib/python3/dist-packages/imaplib2.py", line 2103, in __init__\n    IMAP4.__init__(self, host, port, debug, debug_file, identifier, timeout, debug_buf_lvl)\n', '  File "/usr/lib/python3/dist-packages/imaplib2.py", line 336, in __init__\n    self.open(host, port)\n', '  File "/usr/share/offlineimap3/offlineimap/imaplibutil.py", line 199, in open\n    super(WrappedIMAP4_SSL, self).open(host, port)\n', '  File "/usr/lib/python3/dist-packages/imaplib2.py", line 2115, in open\n    self.sock = self.open_socket()\n', '  File "/usr/share/offlineimap3/offlineimap/imaplibutil.py", line 100, in open_socket\n    raise socket.error(msg)\n']
 *** Finished account 'my_imap' in 0:00
[thread]: Unregister thread 'Account sync my_imap'
ERROR: Exceptions occurred during the run!
ERROR: While attempting to sync account 'my_imap'
  local variable 'msg' referenced before assignment

Traceback:
  File "/usr/share/offlineimap3/offlineimap/accounts.py", line 298, in syncrunner
    self.__sync()
  File "/usr/share/offlineimap3/offlineimap/accounts.py", line 374, in __sync
    remoterepos.getfolders()
  File "/usr/share/offlineimap3/offlineimap/repository/IMAP.py", line 667, in getfolders
    imapobj = self.imapserver.acquireconnection()
  File "/usr/share/offlineimap3/offlineimap/imapserver.py", line 560, in acquireconnection
    imapobj = imaplibutil.WrappedIMAP4_SSL(
  File "/usr/share/offlineimap3/offlineimap/imaplibutil.py", line 191, in __init__
    super(WrappedIMAP4_SSL, self).__init__(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/imaplib2.py", line 2103, in __init__
    IMAP4.__init__(self, host, port, debug, debug_file, identifier, timeout, debug_buf_lvl)
  File "/usr/lib/python3/dist-packages/imaplib2.py", line 336, in __init__
    self.open(host, port)
  File "/usr/share/offlineimap3/offlineimap/imaplibutil.py", line 199, in open
    super(WrappedIMAP4_SSL, self).open(host, port)
  File "/usr/lib/python3/dist-packages/imaplib2.py", line 2115, in open
    self.sock = self.open_socket()
  File "/usr/share/offlineimap3/offlineimap/imaplibutil.py", line 100, in open_socket
    raise socket.error(msg)