Not able to reconnect to outlook MailBox using spring integration and imap idle - spring-integration

Question

I am using spring integration and i am getting below exception when the server keeps IDLE for sometime. I am not able to reproduce the below exception.
Caused by: javax.mail.FolderClosedException: * BYE JavaMail Exception: java.net.SocketException: Connection timed out
at com.sun.mail.imap.IMAPFolder.handleIdle(IMAPFolder.java:3199)
at com.sun.mail.imap.IMAPFolder.idle(IMAPFolder.java:3043)
at com.sun.mail.imap.IMAPFolder.idle(IMAPFolder.java:2995)
at org.springframework.integration.mail.ImapMailReceiver.waitForNewMessages(ImapMailReceiver.java:175)
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:220)
... 10 common frames omitted
The below exeption is thrown from java mail 1.5
Please help me in reproducing this issue and fix for this issue. Thanks

Answer 1

The server will time out the connection if it's idle for too long. You need to poke the server every 20 - 30 minutes to keep the connection alive, e.g., using Folder.getMessageCount. (Of course, the connection can still break for all sorts of other reasons, so you have to be prepared to handle that in any case.)

Answer 2

It's just a warning log; the adapter will reconnect after this exception.
If you want to suppress the log message, reduce the log level for that category to ERROR.
EDIT
It will reconnect 10 seconds after the failure, unless you have changed reconnectDelay ...
#Test
public void testIdleReconnects() throws Exception {
ImapMailReceiver receiver = spy(new ImapMailReceiver("imap:foo"));
receiver.setBeanFactory(mock(BeanFactory.class));
receiver.afterPropertiesSet();
ImapIdleChannelAdapter adapter = new ImapIdleChannelAdapter(receiver);
Folder folder = mock(Folder.class);
willThrow(new FolderClosedException(folder, "test")).given(receiver).waitForNewMessages();
ThreadPoolTaskScheduler taskScheduler = new ThreadPoolTaskScheduler();
taskScheduler.initialize();
adapter.setTaskScheduler(taskScheduler);
adapter.afterPropertiesSet();
final CountDownLatch latch = new CountDownLatch(3); << exit test after 3
adapter.setApplicationEventPublisher(e -> {
latch.countDown();
});
adapter.start();
assertTrue(latch.await(60, TimeUnit.SECONDS));
}
If you are not seeing logs similar to these, you should edit your question with complete configuration and logs - you should also try setting the javamail property mail.debug to true to see the activity.
This is what the above test produces for me...
2017-02-26 12:59:43,977 [ThreadPoolTaskScheduler-1] DEBUG: ImapIdleChannelAdapter - waiting for mail
2017-02-26 12:59:43,982 [ThreadPoolTaskScheduler-1] WARN : ImapIdleChannelAdapter - error occurred in idle task
javax.mail.FolderClosedException: test
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:277)
at org.springframework.integration.mail.ImapIdleChannelAdapter$ReceivingTask.run(ImapIdleChannelAdapter.java:243)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
2017-02-26 12:59:43,984 [ThreadPoolTaskScheduler-1] WARN : ImapIdleChannelAdapter - Failed to execute IDLE task. Will attempt to resubmit in 10000 milliseconds.
java.lang.IllegalStateException: Failure in 'idle' task. Will resubmit.
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:296)
at org.springframework.integration.mail.ImapIdleChannelAdapter$ReceivingTask.run(ImapIdleChannelAdapter.java:243)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.mail.FolderClosedException: test
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:277)
... 10 more
2017-02-26 12:59:53,989 [ThreadPoolTaskScheduler-1] DEBUG: ImapIdleChannelAdapter - waiting for mail
2017-02-26 12:59:53,990 [ThreadPoolTaskScheduler-1] WARN : ImapIdleChannelAdapter - error occurred in idle task
javax.mail.FolderClosedException: test
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:277)
at org.springframework.integration.mail.ImapIdleChannelAdapter$ReceivingTask.run(ImapIdleChannelAdapter.java:243)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
2017-02-26 12:59:53,991 [ThreadPoolTaskScheduler-1] WARN : ImapIdleChannelAdapter - Failed to execute IDLE task. Will attempt to resubmit in 10000 milliseconds.
java.lang.IllegalStateException: Failure in 'idle' task. Will resubmit.
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:296)
at org.springframework.integration.mail.ImapIdleChannelAdapter$ReceivingTask.run(ImapIdleChannelAdapter.java:243)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.mail.FolderClosedException: test
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:277)
... 10 more
2017-02-26 13:00:03,997 [ThreadPoolTaskScheduler-1] DEBUG: ImapIdleChannelAdapter - waiting for mail
2017-02-26 13:00:03,997 [ThreadPoolTaskScheduler-1] WARN : ImapIdleChannelAdapter - error occurred in idle task
javax.mail.FolderClosedException: test
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:277)
at org.springframework.integration.mail.ImapIdleChannelAdapter$ReceivingTask.run(ImapIdleChannelAdapter.java:243)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
2017-02-26 13:00:03,998 [ThreadPoolTaskScheduler-1] WARN : ImapIdleChannelAdapter - Failed to execute IDLE task. Will attempt to resubmit in 10000 milliseconds.
java.lang.IllegalStateException: Failure in 'idle' task. Will resubmit.
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:296)
at org.springframework.integration.mail.ImapIdleChannelAdapter$ReceivingTask.run(ImapIdleChannelAdapter.java:243)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.mail.FolderClosedException: test
at org.springframework.integration.mail.ImapIdleChannelAdapter$IdleTask.run(ImapIdleChannelAdapter.java:277)
... 10 more
As you can see, we attempt to reconnect every 10 seconds.