[jira] [Reopened] (SSHD-938) SSH sessions being closed with invalid packet length

2019-08-25 Thread Anudeep (Jira)


 [ 
https://issues.apache.org/jira/browse/SSHD-938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Anudeep reopened SSHD-938:
--

> SSH sessions being closed with invalid packet length
> 
>
> Key: SSHD-938
> URL: https://issues.apache.org/jira/browse/SSHD-938
> Project: MINA SSHD
>  Issue Type: Bug
>Affects Versions: 0.13.0
>Reporter: Anudeep
>Assignee: Goldstein Lyor
>Priority: Blocker
> Attachments: server.7z
>
>
> SSH connections are being closed with invalid packet length and TCP 
> connection goes into CLOSE_WAIT state and once CLOSE_WAIT state count crosses 
> 4 no more SSH connection is being allowed.
> with SSHD-core-0.13.0
>  
> Below is the error
> 2019-08-22 09:53:29,106 INFO  [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 INFO  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 DEBUG [org.apache.sshd.common.io.nio2.Nio2Session] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Caught exception, now calling 
> handler2019-08-22 09:53:29,106 WARN  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Exception caught: 
> org.apache.sshd.common.SshException: Invalid packet length: -16976455 at 
> org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:677)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:283)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:54)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:184)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:170)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.8.0_172] 
> at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126) [rt.jar:1.8.0_172] at 
> sun.nio.ch.Invoker$2.run(Invoker.java:218) [rt.jar:1.8.0_172] at 
> sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
>  [rt.jar:1.8.0_172] at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>  [rt.jar:1.8.0_172]



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[jira] [Commented] (SSHD-938) SSH sessions being closed with invalid packet length

2019-08-25 Thread Anudeep (Jira)


[ 
https://issues.apache.org/jira/browse/SSHD-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16915471#comment-16915471
 ] 

Anudeep commented on SSHD-938:
--

Hi [~lgoldstein],

Are there any known issues around which we have raised.

Regrads,

Anudeep

> SSH sessions being closed with invalid packet length
> 
>
> Key: SSHD-938
> URL: https://issues.apache.org/jira/browse/SSHD-938
> Project: MINA SSHD
>  Issue Type: Bug
>Affects Versions: 0.13.0
>Reporter: Anudeep
>Assignee: Goldstein Lyor
>Priority: Blocker
> Attachments: server.7z
>
>
> SSH connections are being closed with invalid packet length and TCP 
> connection goes into CLOSE_WAIT state and once CLOSE_WAIT state count crosses 
> 4 no more SSH connection is being allowed.
> with SSHD-core-0.13.0
>  
> Below is the error
> 2019-08-22 09:53:29,106 INFO  [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 INFO  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 DEBUG [org.apache.sshd.common.io.nio2.Nio2Session] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Caught exception, now calling 
> handler2019-08-22 09:53:29,106 WARN  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Exception caught: 
> org.apache.sshd.common.SshException: Invalid packet length: -16976455 at 
> org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:677)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:283)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:54)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:184)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:170)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.8.0_172] 
> at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126) [rt.jar:1.8.0_172] at 
> sun.nio.ch.Invoker$2.run(Invoker.java:218) [rt.jar:1.8.0_172] at 
> sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
>  [rt.jar:1.8.0_172] at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>  [rt.jar:1.8.0_172]



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[jira] [Commented] (SSHD-938) SSH sessions being closed with invalid packet length

2019-08-25 Thread Anudeep (Jira)


[ 
https://issues.apache.org/jira/browse/SSHD-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16915296#comment-16915296
 ] 

Anudeep commented on SSHD-938:
--

One last question why only 4 closewait connection block further requests.we 
expect some answer. 

> SSH sessions being closed with invalid packet length
> 
>
> Key: SSHD-938
> URL: https://issues.apache.org/jira/browse/SSHD-938
> Project: MINA SSHD
>  Issue Type: Bug
>Affects Versions: 0.13.0
>Reporter: Anudeep
>Assignee: Goldstein Lyor
>Priority: Blocker
> Attachments: server.7z
>
>
> SSH connections are being closed with invalid packet length and TCP 
> connection goes into CLOSE_WAIT state and once CLOSE_WAIT state count crosses 
> 4 no more SSH connection is being allowed.
> with SSHD-core-0.13.0
>  
> Below is the error
> 2019-08-22 09:53:29,106 INFO  [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 INFO  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 DEBUG [org.apache.sshd.common.io.nio2.Nio2Session] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Caught exception, now calling 
> handler2019-08-22 09:53:29,106 WARN  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Exception caught: 
> org.apache.sshd.common.SshException: Invalid packet length: -16976455 at 
> org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:677)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:283)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:54)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:184)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:170)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.8.0_172] 
> at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126) [rt.jar:1.8.0_172] at 
> sun.nio.ch.Invoker$2.run(Invoker.java:218) [rt.jar:1.8.0_172] at 
> sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
>  [rt.jar:1.8.0_172] at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>  [rt.jar:1.8.0_172]



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[jira] [Closed] (SSHD-938) SSH sessions being closed with invalid packet length

2019-08-25 Thread Goldstein Lyor (Jira)


 [ 
https://issues.apache.org/jira/browse/SSHD-938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Goldstein Lyor closed SSHD-938.
---
Resolution: Won't Fix

> SSH sessions being closed with invalid packet length
> 
>
> Key: SSHD-938
> URL: https://issues.apache.org/jira/browse/SSHD-938
> Project: MINA SSHD
>  Issue Type: Bug
>Affects Versions: 0.13.0
>Reporter: Anudeep
>Assignee: Goldstein Lyor
>Priority: Blocker
> Attachments: server.7z
>
>
> SSH connections are being closed with invalid packet length and TCP 
> connection goes into CLOSE_WAIT state and once CLOSE_WAIT state count crosses 
> 4 no more SSH connection is being allowed.
> with SSHD-core-0.13.0
>  
> Below is the error
> 2019-08-22 09:53:29,106 INFO  [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 INFO  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 DEBUG [org.apache.sshd.common.io.nio2.Nio2Session] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Caught exception, now calling 
> handler2019-08-22 09:53:29,106 WARN  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Exception caught: 
> org.apache.sshd.common.SshException: Invalid packet length: -16976455 at 
> org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:677)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:283)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:54)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:184)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:170)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.8.0_172] 
> at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126) [rt.jar:1.8.0_172] at 
> sun.nio.ch.Invoker$2.run(Invoker.java:218) [rt.jar:1.8.0_172] at 
> sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
>  [rt.jar:1.8.0_172] at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>  [rt.jar:1.8.0_172]



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[jira] [Commented] (SSHD-938) SSH sessions being closed with invalid packet length

2019-08-25 Thread Goldstein Lyor (Jira)


[ 
https://issues.apache.org/jira/browse/SSHD-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16915293#comment-16915293
 ] 

Goldstein Lyor commented on SSHD-938:
-

I  am really sorry, but the version is so old that I cannot  even begin to 
surmise what has gone wrong. We fixed so many bugs and changed the code so much 
that it is virtually impossible to provide clue. I can only re-iterate the 
recommendation to use the latest version. The only alternative is for you to 
debug the code - again, I am very sorry that we cannot provide more support but 
we are extremely short-handed...

> SSH sessions being closed with invalid packet length
> 
>
> Key: SSHD-938
> URL: https://issues.apache.org/jira/browse/SSHD-938
> Project: MINA SSHD
>  Issue Type: Bug
>Affects Versions: 0.13.0
>Reporter: Anudeep
>Assignee: Goldstein Lyor
>Priority: Blocker
> Attachments: server.7z
>
>
> SSH connections are being closed with invalid packet length and TCP 
> connection goes into CLOSE_WAIT state and once CLOSE_WAIT state count crosses 
> 4 no more SSH connection is being allowed.
> with SSHD-core-0.13.0
>  
> Below is the error
> 2019-08-22 09:53:29,106 INFO  [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 INFO  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Error decoding packet (invalid 
> length) a5 5f 74 5f a6 6f ea 41 02 c0 0a 54 83 22 e4 77 53 7d 0d b9 25 de 36 
> 1d 07 cb cd 43 66 95 51 b2 72 54 d5 4e 2d 0a d5 17 f4 5e 81 4d 6a b8 ab f7 00 
> bf 4d 40 f5 56 b7 61 9b 8a be fe 54 d4 89 a2 c5 07 3c de 25 95 44 18 4f 90 dc 
> aa 5b de 40 85 71 12 cc f6 c0 34 8d 0e 75 95 a5 5b 8d f6 b9 f6 94 04 d8 b5 25 
> 5c d5 58 06 d1 82 68 13 2f 4c a0 ee 78 6b 20 97 52 2d 93 4c 88 bc 17 53 ca eb 
> 34 23 c1 c6 1e 5a f9 31 e7 52 f9 ef 88 03 de e8 af ba 11 5e 97 50 1e c2 26 ba 
> 80 34 55 3f 38 49 0c a9 80 8c a3 fe 6f b6 b6 5d 45 41 e9 e0 e6 d5 15 d6 44 f8 
> c42019-08-22 09:53:29,106 DEBUG [org.apache.sshd.common.io.nio2.Nio2Session] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Caught exception, now calling 
> handler2019-08-22 09:53:29,106 WARN  
> [org.apache.sshd.server.session.ServerSession] 
> (sshd-SshServer[6162dce4]-nio2-thread-2) Exception caught: 
> org.apache.sshd.common.SshException: Invalid packet length: -16976455 at 
> org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:677)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:283)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:54)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:184)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:170)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> java.security.AccessController.doPrivileged(Native Method) [rt.jar:1.8.0_172] 
> at 
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
>  [sshd-core-0.13.0.jar:0.13.0] at 
> sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126) [rt.jar:1.8.0_172] at 
> sun.nio.ch.Invoker$2.run(Invoker.java:218) [rt.jar:1.8.0_172] at 
> sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
>  [rt.jar:1.8.0_172] at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>  [rt.jar:1.8.0_172]



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