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imaplibutil: Have SELECT throw an OfflineImapError when the connection died

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Imapserver.acquireconnection will succeed even whent the server connection
has been terminated and the first IMAP operation will throw an exception.

Often this is the folder SELECT operation (e.g. after an idle timeout), as
has been reported by John Wiegley. Catch this case and throw an
OfflineImapError with severity FOLDER_RETRY to notify consumers that they
are supposed to retry.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This commit is contained in:
Sebastian Spaeth 2011-09-01 11:00:59 +02:00 committed by Nicolas Sebrecht
parent 7bc45507cb
commit 61fffd5c5f
1 changed files with 8 additions and 1 deletions
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9
offlineimap/imaplibutil.py
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@ -49,7 +49,14 @@ class UsefulIMAPMixIn:
return
# Wipe out all old responses, to maintain semantics with old imaplib2
del self.untagged_responses[:]
result = self.__class__.__bases__[1].select(self, mailbox, readonly)
try:
result = self.__class__.__bases__[1].select(self, mailbox, readonly)
except self.abort, e:
# self.abort is raised when we are supposed to retry
errstr = "Server '%s' closed connection, error on SELECT '%s'. Ser"\
"ver said: %s" % (self.host, mailbox, e.args[0])
severity = OfflineImapError.ERROR.FOLDER_RETRY
raise OfflineImapError(errstr, severity)
if result[0] != 'OK':
#in case of error, bail out with OfflineImapError
errstr = "Error SELECTing mailbox '%s', server reply:\n%s" %\