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https://issues.apache.org/jira/browse/SSHD-600?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Goldstein Lyor reassigned SSHD-600:
-----------------------------------
Assignee: Goldstein Lyor
> Actual authentication error is just a warning in the log
> --------------------------------------------------------
>
> Key: SSHD-600
> URL: https://issues.apache.org/jira/browse/SSHD-600
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 1.0.0
> Reporter: Oliver Stöneberg
> Assignee: Goldstein Lyor
> Priority: Minor
>
> I was getting the following exception on various systems when calling
> auth().verify() on a ClientSession object.
> org.apache.sshd.common.SshException: Session is closed -
> at org.apache.sshd.client.session.ClientUserAuthService.preClose() in
> ClientUserAuthService.java:225.
> at org.apache.sshd.common.util.CloseableUtils$AbstractCloseable.close() in
> CloseableUtils.java:346.
> at org.apache.sshd.common.util.CloseableUtils$ParallelCloseable.doClose() in
> CloseableUtils.java:235.
> at org.apache.sshd.common.util.CloseableUtils$SimpleCloseable.close() in
> CloseableUtils.java:202.
> at
> org.apache.sshd.common.util.CloseableUtils$SequentialCloseable$1.operationComplete()
> in CloseableUtils.java:260.
> at
> org.apache.sshd.common.util.CloseableUtils$SequentialCloseable$1.operationComplete()
> in CloseableUtils.java:254.
> at org.apache.sshd.common.util.CloseableUtils$SequentialCloseable.doClose()
> in CloseableUtils.java:270.
> at org.apache.sshd.common.util.CloseableUtils$SimpleCloseable.close() in
> CloseableUtils.java:202.
> at
> org.apache.sshd.common.util.CloseableUtils$AbstractInnerCloseable.doCloseImmediately()
> in CloseableUtils.java:441.
> at org.apache.sshd.common.session.AbstractSession.doCloseImmediately() in
> AbstractSession.java:538.
> at org.apache.sshd.common.util.CloseableUtils$AbstractCloseable.close() in
> CloseableUtils.java:347.
> at org.apache.sshd.common.session.AbstractSession.exceptionCaught() in
> AbstractSession.java:525.
> at org.apache.sshd.common.session.AbstractSessionIoHandler.exceptionCaught()
> in AbstractSessionIoHandler.java:49.
> at org.apache.sshd.common.io.nio2.Nio2Session.exceptionCaught() in
> Nio2Session.java:137.
> at org.apache.sshd.common.io.nio2.Nio2Session.access$500() in
> Nio2Session.java:46.
> at org.apache.sshd.common.io.nio2.Nio2Session$2.onFailed() in
> Nio2Session.java:240.
> at org.apache.sshd.common.io.nio2.Nio2CompletionHandler$2.run() in
> Nio2CompletionHandler.java:45.
> at java.security.AccessController.doPrivileged() in AccessController.java:-2.
> at org.apache.sshd.common.io.nio2.Nio2CompletionHandler.failed() in
> Nio2CompletionHandler.java:42.
> at org.apache.sshd.common.io.nio2.Nio2Session$2.onCompleted() in
> Nio2Session.java:233.
> at org.apache.sshd.common.io.nio2.Nio2Session$2.onCompleted() in
> Nio2Session.java:212.
> at org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run() in
> Nio2CompletionHandler.java:34.
> at java.security.AccessController.doPrivileged() in AccessController.java:-2.
> at org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed() in
> Nio2CompletionHandler.java:31.
> at sun.nio.ch.Invoker.invokeUnchecked() in Invoker.java:126.
> at sun.nio.ch.Invoker$2.run() in Invoker.java:218.
> at sun.nio.ch.AsynchronousChannelGroupImpl$1.run() in
> AsynchronousChannelGroupImpl.java:112.
> at java.util.concurrent.ThreadPoolExecutor.runWorker() in
> ThreadPoolExecutor.java:1142.
> at java.util.concurrent.ThreadPoolExecutor$Worker.run() in
> ThreadPoolExecutor.java:617.
> After enabling all log levels it turned out the actual error is a different
> one and is only logged as a warning:
> java.security.InvalidAlgorithmParameterException: Prime size must be multiple
> of 64, and can only range from 512 to 2048 (inclusive)
> at
> com.sun.crypto.provider.DHKeyPairGenerator.initialize(DHKeyPairGenerator.java:120)
> at
> java.security.KeyPairGenerator$Delegate.initialize(KeyPairGenerator.java:674)
> at java.security.KeyPairGenerator.initialize(KeyPairGenerator.java:411)
> at org.apache.sshd.common.kex.DHG.getE(DHG.java:66)
> at org.apache.sshd.client.kex.DHGEXClient.next(DHGEXClient.java:110)
> at
> org.apache.sshd.common.session.AbstractSession.doHandleMessage(AbstractSession.java:395)
> at
> org.apache.sshd.common.session.AbstractSession.handleMessage(AbstractSession.java:349)
> at
> org.apache.sshd.client.session.ClientSessionImpl.handleMessage(ClientSessionImpl.java:487)
> at
> org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:848)
> at
> org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:331)
> at
> org.apache.sshd.common.session.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:57)
> at
> org.apache.sshd.common.io.nio2.Nio2Session$2.onCompleted(Nio2Session.java:220)
> at
> org.apache.sshd.common.io.nio2.Nio2Session$2.onCompleted(Nio2Session.java:212)
> at
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:34)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:31)
> at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)
> at sun.nio.ch.Invoker$2.run(Invoker.java:218)
> at
> sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> This is definitely not just a warning and should be an error. Also I think it
> should also be the actual exception you get from auth(). The "Session is
> closed" error is not helpful at all.
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