yaroslavambrozyak opened a new issue, #484:
URL: https://github.com/apache/mina-sshd/issues/484
### Version
2.9.2
### Bug description
Hi, I recently migrated a project to Spring Boot 3 and faced an issue
connecting to a remote SFTP server. I get a timeout during auth, this is
printed in the console
```
Disconnecting(ClientSessionImpl[someuser@somehost/0.0.0.0:22]):
SSH2_DISCONNECT_PROTOCOL_ERROR - Detected AuthTimeout after 120823/120000 ms.
```
If I spawn an SFTP docker container on my local then I can connect to my
local SFTP, also I can connect to the remote server if I use Spring Boot 2.x
version.
Can I run it in verbose or debug mode to see some additional information?
I really appreciate any help you can provide.
### Actual behavior
I have tried to connect to a remote server using simple code
```
SshClient sshClient = SshClient.setUpDefaultClient();
sshClient.start();
ConnectFuture connect = sshClient.connect("username", "host", 22);
ClientSession clientSession = connect.verify().getClientSession();
clientSession.addPasswordIdentity("pass");
AuthFuture authFuture = clientSession.auth().verify();
```
so it hangs on the last line and after some time prints a log I mentioned
above
The same code is working if I try to connect to my local SFTP server (it
does not throw any timeout exception)
### Expected behavior
Be able to connect to the server
### Relevant log output
```Shell
2024-04-15T17:30:02.807+03:00 INFO 35672 --- [ main]
o.a.s.c.i.DefaultIoServiceFactoryFactory : No detected/configured
IoServiceFactoryFactory; using Nio2ServiceFactoryFactory
2024-04-15T17:30:02.833+03:00 INFO 35672 --- [ main]
c.c.h.DefaultConfigFileHostEntryResolver :
resolveEffectiveResolver(<some_host>) no configuration file at
C:\Users\User1\.ssh\config
2024-04-15T17:30:03.134+03:00 WARN 35672 --- []-nio2-thread-6]
o.a.s.c.k.AcceptAllServerKeyVerifier : Server at <some_host> presented
unverified RSA key: SHA256:vT...n+w
2024-04-15T17:32:03.807+03:00 INFO 35672 --- [-timer-thread-1]
o.a.s.client.session.ClientSessionImpl :
Disconnecting(ClientSessionImpl[<some_host>]): SSH2_DISCONNECT_PROTOCOL_ERROR -
Detected AuthTimeout after 120823/120000 ms.
org.apache.sshd.common.SshException: Session is being closed
at
org.apache.sshd.common.future.AbstractSshFuture.verifyResult(AbstractSshFuture.java:141)
at
org.apache.sshd.client.future.DefaultAuthFuture.verify(DefaultAuthFuture.java:56)
at
org.apache.sshd.client.future.DefaultAuthFuture.verify(DefaultAuthFuture.java:35)
at
org.apache.sshd.common.future.VerifiableFuture.verify(VerifiableFuture.java:43)
at
com.example.sftpdebug.SftpdebugApplication.main(SftpdebugApplication.java:31)
Caused by: org.apache.sshd.common.SshException: Session is being closed
at
org.apache.sshd.client.session.ClientSessionImpl.preClose(ClientSessionImpl.java:169)
at
org.apache.sshd.common.util.closeable.AbstractCloseable.close(AbstractCloseable.java:94)
at
org.apache.sshd.common.session.helpers.SessionHelper.lambda$disconnect$9(SessionHelper.java:1213)
at
org.apache.sshd.common.future.AbstractSshFuture.lambda$notifyListener$3(AbstractSshFuture.java:178)
at
org.apache.sshd.common.util.threads.ThreadUtils.runAsInternal(ThreadUtils.java:68)
at
org.apache.sshd.common.future.AbstractSshFuture.notifyListener(AbstractSshFuture.java:177)
at
org.apache.sshd.common.future.DefaultSshFuture.addListener(DefaultSshFuture.java:214)
at
org.apache.sshd.common.session.helpers.SessionHelper.disconnect(SessionHelper.java:1197)
at
org.apache.sshd.common.session.helpers.SessionHelper.checkForTimeouts(SessionHelper.java:301)
at
org.apache.sshd.common.session.helpers.SessionTimeoutListener.run(SessionTimeoutListener.java:84)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at
java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
at
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
```
### Other information
_No response_
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