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Posted to dev@mina.apache.org by "zhangbing (Jira)" <ji...@apache.org> on 2022/09/07 03:26:00 UTC
[jira] [Created] (SSHD-1294) Default SshClient FD leak because Selector not closed
zhangbing created SSHD-1294:
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Summary: Default SshClient FD leak because Selector not closed
Key: SSHD-1294
URL: https://issues.apache.org/jira/browse/SSHD-1294
Project: MINA SSHD
Issue Type: Bug
Affects Versions: 2.8.0
Reporter: zhangbing
Attachments: image-2022-09-07-09-52-41-327.png, image-2022-09-07-10-06-03-182.png, image-2022-09-07-10-24-00-969.png, image-2022-09-07-10-24-35-550.png, image-2022-09-07-10-25-14-435.png, image-2022-09-07-10-30-41-233.png, image-2022-09-07-10-42-15-818.png, image-2022-09-07-11-21-33-635.png
The default SshClient SshClient.setUpDefaultClient() using MinaServiceFactory.The NioProcessor is created and open the Selector. The Selector.close() is called in doDispose().
!image-2022-09-07-09-52-41-327.png!
!image-2022-09-07-10-06-03-182.png!
!image-2022-09-07-10-42-15-818.png!
When creating NioSocketConnector,the field createdProcessor is always false.
!image-2022-09-07-10-24-00-969.png!
!image-2022-09-07-10-24-35-550.png!
!image-2022-09-07-10-25-14-435.png!
Because createdProcessor is always false, processor.dispose() is never executed.
!image-2022-09-07-10-30-41-233.png!
The dispose() in SimpleIoProcessorPool will not be executed. So，the dispose() and doDisopose in NioProcessor is nerver executed. The Selector in NioProcessor is not closed.
FD leak information with the losf command:
!image-2022-09-07-11-21-33-635.png!
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