Add extra logging to troubleshoot issue #670

[hierynomus]

No description provided.

[hierynomus]

@jmatias-assia Can you try to run with a build from this PR? I've added a logging line just before the encryption that shows the entire packet including length and padding to see what the server chokes on.

[jmatias-assia]

Here it is:

-08 11:47:02,361 [pool-InterpreterHandler_SNMP-thread-1] INFO  transport.TransportImpl  - Client identity string: SSH-2.0-SSHJ_0.31.1_SNAPSHOT
2021-04-08 11:47:02,391 [pool-InterpreterHandler_SNMP-thread-1] INFO  transport.TransportImpl  - Server identity string: SSH-2.0-RomSShell_4.31
2021-04-08 11:47:02,392 [pool-InterpreterHandler_SNMP-thread-1] DEBUG transport.KeyExchanger  - Sending SSH_MSG_KEXINIT
2021-04-08 11:47:02,393 [reader] TRACE transport.Decoder  - Received packet #0: 14 8f 3d 30 09 0e 5a 51 61 29 78 79 fb e0 23 54 ad 00 00 00 1a 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 2d 73 68 61 31 00 00 00 07 73 73 68 2d 64 73 73 00 00 00 08 33 64 65 73 2d 63 62 63 00 00 00 08 33 64 65 73 2d 63 62 63 00 00 00 09 68 6d 61 63 2d 73 68 61 31 00 00 00 09 68 6d 61 63 2d 73 68 61 31 00 00 00 04 6e 6f 6e 65 00 00 00 04 6e 6f 6e 65 00 00 00 00 00 00 00 00 00 00 00 00 00
2021-04-08 11:47:02,394 [reader] TRACE transport.TransportImpl  - Received packet KEXINIT
2021-04-08 11:47:02,395 [reader] DEBUG transport.KeyExchanger  - Received SSH_MSG_KEXINIT
2021-04-08 11:47:02,395 [pool-InterpreterHandler_SNMP-thread-1] TRACE transport.Encoder  - Encoding packet #0: 14 8c e0 fa d3 79 48 38 97 06 f1 be 99 fe c4 cb 9c 00 00 02 a7 63 75 72 76 65 32 35 35 31 39 2d 73 68 61 32 35 36 2c 63 75 72 76 65 32 35 35 31 39 2d 73 68 61 32 35 36 40 6c 69 62 73 73 68 2e 6f 72 67 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 2d 65 78 63 68 61 6e 67 65 2d 73 68 61 32 35 36 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 73 74 70 35 32 31 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 73 74 70 33 38 34 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 73 74 70 32 35 36 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 2d 65 78 63 68 61 6e 67 65 2d 73 68 61 31 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 2d 73 68 61 31 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 34 2d 73 68 61 31 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 34 2d 73 68 61 32 35 36 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 35 2d 73 68 61 35 31 32 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 36 2d 73 68 61 35 31 32 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 37 2d 73 68 61 35 31 32 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 38 2d 73 68 61 35 31 32 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 34 2d 73 68 61 32 35 36 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 35 2d 73 68 61 32 35 36 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 35 2d 73 68 61 32 35 36 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 35 2d 73 68 61 33 38 34 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 36 2d 73 68 61 32 35 36 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 36 2d 73 68 61 33 38 34 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 36 2d 73 68 61 35 31 32 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 38 2d 73 68 61 35 31 32 40 73 73 68 2e 63 6f 6d 2c 65 78 74 2d 69 6e 66 6f 2d 63 00 00 00 ab 73 73 68 2d 65 64 32 35 35 31 39 2c 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 74 70 35 32 31 2c 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 74 70 33 38 34 2c 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 74 70 32 35 36 2c 72 73 61 2d 73 68 61 32 2d 35 31 32 2c 72 73 61 2d 73 68 61 32 2d 32 35 36 2c 73 73 68 2d 72 73 61 2d 63 65 72 74 2d 76 30 31 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 73 73 68 2d 64 73 73 2d 63 65 72 74 2d 76 30 31 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 73 73 68 2d 72 73 61 2c 73 73 68 2d 64 73 73 00 00 01 a3 61 65 73 31 32 38 2d 63 62 63 2c 61 65 73 31 32 38 2d 63 74 72 2c 61 65 73 31 39 32 2d 63 62 63 2c 61 65 73 31 39 32 2d 63 74 72 2c 61 65 73 32 35 36 2d 63 62 63 2c 61 65 73 32 35 36 2d 63 74 72 2c 61 65 73 31 32 38 2d 67 63 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 61 65 73 32 35 36 2d 67 63 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 62 6c 6f 77 66 69 73 68 2d 63 62 63 2c 62 6c 6f 77 66 69 73 68 2d 63 74 72 2c 63 61 73 74 31 32 38 2d 63 62 63 2c 63 61 73 74 31 32 38 2d 63 74 72 2c 69 64 65 61 2d 63 62 63 2c 69 64 65 61 2d 63 74 72 2c 73 65 72 70 65 6e 74 31 32 38 2d 63 62 63 2c 73 65 72 70 65 6e 74 31 32 38 2d 63 74 72 2c 73 65 72 70 65 6e 74 31 39 32 2d 63 62 63 2c 73 65 72 70 65 6e 74 31 39 32 2d 63 74 72 2c 73 65 72 70 65 6e 74 32 35 36 2d 63 62 63 2c 73 65 72 70 65 6e 74 32 35 36 2d 63 74 72 2c 33 64 65 73 2d 63 62 63 2c 33 64 65 73 2d 63 74 72 2c 74 77 6f 66 69 73 68 31 32 38 2d 63 62 63 2c 74 77 6f 66 69 73 68 31 32 38 2d 63 74 72 2c 74 77 6f 66 69 73 68 31 39 32 2d 63 62 63 2c 74 77 6f 66 69 73 68 31 39 32 2d 63 74 72 2c 74 77 6f 66 69 73 68 32 35 36 2d 63 62 63 2c 74 77 6f 66 69 73 68 32 35 36 2d 63 74 72 2c 74 77 6f 66 69 73 68 2d 63 62 63 2c 61 72 63 66 6f 75 72 2c 61 72 63 66 6f 75 72 31 32 38 2c 61 72 63 66 6f 75 72 32 35 36 00 00 01 a3 61 65 73 31 32 38 2d 63 62 63 2c 61 65 73 31 32 38 2d 63 74 72 2c 61 65 73 31 39 32 2d 63 62 63 2c 61 65 73 31 39 32 2d 63 74 72 2c 61 65 73 32 35 36 2d 63 62 63 2c 61 65 73 32 35 36 2d 63 74 72 2c 61 65 73 31 32 38 2d 67 63 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 61 65 73 32 35 36 2d 67 63 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 62 6c 6f 77 66 69 73 68 2d 63 62 63 2c 62 6c 6f 77 66 69 73 68 2d 63 74 72 2c 63 61 73 74 31 32 38 2d 63 62 63 2c 63 61 73 74 31 32 38 2d 63 74 72 2c 69 64 65 61 2d 63 62 63 2c 69 64 65 61 2d 63 74 72 2c 73 65 72 70 65 6e 74 31 32 38 2d 63 62 63 2c 73 65 72 70 65 6e 74 31 32 38 2d 63 74 72 2c 73 65 72 70 65 6e 74 31 39 32 2d 63 62 63 2c 73 65 72 70 65 6e 74 31 39 32 2d 63 74 72 2c 73 65 72 70 65 6e 74 32 35 36 2d 63 62 63 2c 73 65 72 70 65 6e 74 32 35 36 2d 63 74 72 2c 33 64 65 73 2d 63 62 63 2c 33 64 65 73 2d 63 74 72 2c 74 77 6f 66 69 73 68 31 32 38 2d 63 62 63 2c 74 77 6f 66 69 73 68 31 32 38 2d 63 74 72 2c 74 77 6f 66 69 73 68 31 39 32 2d 63 62 63 2c 74 77 6f 66 69 73 68 31 39 32 2d 63 74 72 2c 74 77 6f 66 69 73 68 32 35 36 2d 63 62 63 2c 74 77 6f 66 69 73 68 32 35 36 2d 63 74 72 2c 74 77 6f 66 69 73 68 2d 63 62 63 2c 61 72 63 66 6f 75 72 2c 61 72 63 66 6f 75 72 31 32 38 2c 61 72 63 66 6f 75 72 32 35 36 00 00 01 46 68 6d 61 63 2d 73 68 61 31 2c 68 6d 61 63 2d 73 68 61 31 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 31 2d 39 36 2c 68 6d 61 63 2d 73 68 61 31 2d 39 36 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2c 68 6d 61 63 2d 6d 64 35 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2d 39 36 2c 68 6d 61 63 2d 6d 64 35 2d 39 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 2d 35 31 32 2c 68 6d 61 63 2d 73 68 61 32 2d 35 31 32 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2d 39 36 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 01 46 68 6d 61 63 2d 73 68 61 31 2c 68 6d 61 63 2d 73 68 61 31 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 31 2d 39 36 2c 68 6d 61 63 2d 73 68 61 31 2d 39 36 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2c 68 6d 61 63 2d 6d 64 35 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2d 39 36 2c 68 6d 61 63 2d 6d 64 35 2d 39 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 2d 35 31 32 2c 68 6d 61 63 2d 73 68 61 32 2d 35 31 32 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2d 39 36 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 00 04 6e 6f 6e 65 00 00 00 04 6e 6f 6e 65 00 00 00 00 00 00 00 00 00 00 00 00 00
2021-04-08 11:47:02,396 [pool-InterpreterHandler_SNMP-thread-1] TRACE transport.Encoder  - Encrypting packet #0: 00 00 09 74 09 14 8c e0 fa d3 79 48 38 97 06 f1 be 99 fe c4 cb 9c 00 00 02 a7 63 75 72 76 65 32 35 35 31 39 2d 73 68 61 32 35 36 2c 63 75 72 76 65 32 35 35 31 39 2d 73 68 61 32 35 36 40 6c 69 62 73 73 68 2e 6f 72 67 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 2d 65 78 63 68 61 6e 67 65 2d 73 68 61 32 35 36 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 73 74 70 35 32 31 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 73 74 70 33 38 34 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 73 74 70 32 35 36 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 2d 65 78 63 68 61 6e 67 65 2d 73 68 61 31 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 2d 73 68 61 31 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 34 2d 73 68 61 31 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 34 2d 73 68 61 32 35 36 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 35 2d 73 68 61 35 31 32 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 36 2d 73 68 61 35 31 32 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 37 2d 73 68 61 35 31 32 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 38 2d 73 68 61 35 31 32 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 34 2d 73 68 61 32 35 36 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 35 2d 73 68 61 32 35 36 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 35 2d 73 68 61 32 35 36 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 35 2d 73 68 61 33 38 34 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 36 2d 73 68 61 32 35 36 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 36 2d 73 68 61 33 38 34 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 36 2d 73 68 61 35 31 32 40 73 73 68 2e 63 6f 6d 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 38 2d 73 68 61 35 31 32 40 73 73 68 2e 63 6f 6d 2c 65 78 74 2d 69 6e 66 6f 2d 63 00 00 00 ab 73 73 68 2d 65 64 32 35 35 31 39 2c 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 74 70 35 32 31 2c 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 74 70 33 38 34 2c 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 74 70 32 35 36 2c 72 73 61 2d 73 68 61 32 2d 35 31 32 2c 72 73 61 2d 73 68 61 32 2d 32 35 36 2c 73 73 68 2d 72 73 61 2d 63 65 72 74 2d 76 30 31 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 73 73 68 2d 64 73 73 2d 63 65 72 74 2d 76 30 31 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 73 73 68 2d 72 73 61 2c 73 73 68 2d 64 73 73 00 00 01 a3 61 65 73 31 32 38 2d 63 62 63 2c 61 65 73 31 32 38 2d 63 74 72 2c 61 65 73 31 39 32 2d 63 62 63 2c 61 65 73 31 39 32 2d 63 74 72 2c 61 65 73 32 35 36 2d 63 62 63 2c 61 65 73 32 35 36 2d 63 74 72 2c 61 65 73 31 32 38 2d 67 63 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 61 65 73 32 35 36 2d 67 63 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 62 6c 6f 77 66 69 73 68 2d 63 62 63 2c 62 6c 6f 77 66 69 73 68 2d 63 74 72 2c 63 61 73 74 31 32 38 2d 63 62 63 2c 63 61 73 74 31 32 38 2d 63 74 72 2c 69 64 65 61 2d 63 62 63 2c 69 64 65 61 2d 63 74 72 2c 73 65 72 70 65 6e 74 31 32 38 2d 63 62 63 2c 73 65 72 70 65 6e 74 31 32 38 2d 63 74 72 2c 73 65 72 70 65 6e 74 31 39 32 2d 63 62 63 2c 73 65 72 70 65 6e 74 31 39 32 2d 63 74 72 2c 73 65 72 70 65 6e 74 32 35 36 2d 63 62 63 2c 73 65 72 70 65 6e 74 32 35 36 2d 63 74 72 2c 33 64 65 73 2d 63 62 63 2c 33 64 65 73 2d 63 74 72 2c 74 77 6f 66 69 73 68 31 32 38 2d 63 62 63 2c 74 77 6f 66 69 73 68 31 32 38 2d 63 74 72 2c 74 77 6f 66 69 73 68 31 39 32 2d 63 62 63 2c 74 77 6f 66 69 73 68 31 39 32 2d 63 74 72 2c 74 77 6f 66 69 73 68 32 35 36 2d 63 62 63 2c 74 77 6f 66 69 73 68 32 35 36 2d 63 74 72 2c 74 77 6f 66 69 73 68 2d 63 62 63 2c 61 72 63 66 6f 75 72 2c 61 72 63 66 6f 75 72 31 32 38 2c 61 72 63 66 6f 75 72 32 35 36 00 00 01 a3 61 65 73 31 32 38 2d 63 62 63 2c 61 65 73 31 32 38 2d 63 74 72 2c 61 65 73 31 39 32 2d 63 62 63 2c 61 65 73 31 39 32 2d 63 74 72 2c 61 65 73 32 35 36 2d 63 62 63 2c 61 65 73 32 35 36 2d 63 74 72 2c 61 65 73 31 32 38 2d 67 63 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 61 65 73 32 35 36 2d 67 63 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 62 6c 6f 77 66 69 73 68 2d 63 62 63 2c 62 6c 6f 77 66 69 73 68 2d 63 74 72 2c 63 61 73 74 31 32 38 2d 63 62 63 2c 63 61 73 74 31 32 38 2d 63 74 72 2c 69 64 65 61 2d 63 62 63 2c 69 64 65 61 2d 63 74 72 2c 73 65 72 70 65 6e 74 31 32 38 2d 63 62 63 2c 73 65 72 70 65 6e 74 31 32 38 2d 63 74 72 2c 73 65 72 70 65 6e 74 31 39 32 2d 63 62 63 2c 73 65 72 70 65 6e 74 31 39 32 2d 63 74 72 2c 73 65 72 70 65 6e 74 32 35 36 2d 63 62 63 2c 73 65 72 70 65 6e 74 32 35 36 2d 63 74 72 2c 33 64 65 73 2d 63 62 63 2c 33 64 65 73 2d 63 74 72 2c 74 77 6f 66 69 73 68 31 32 38 2d 63 62 63 2c 74 77 6f 66 69 73 68 31 32 38 2d 63 74 72 2c 74 77 6f 66 69 73 68 31 39 32 2d 63 62 63 2c 74 77 6f 66 69 73 68 31 39 32 2d 63 74 72 2c 74 77 6f 66 69 73 68 32 35 36 2d 63 62 63 2c 74 77 6f 66 69 73 68 32 35 36 2d 63 74 72 2c 74 77 6f 66 69 73 68 2d 63 62 63 2c 61 72 63 66 6f 75 72 2c 61 72 63 66 6f 75 72 31 32 38 2c 61 72 63 66 6f 75 72 32 35 36 00 00 01 46 68 6d 61 63 2d 73 68 61 31 2c 68 6d 61 63 2d 73 68 61 31 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 31 2d 39 36 2c 68 6d 61 63 2d 73 68 61 31 2d 39 36 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2c 68 6d 61 63 2d 6d 64 35 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2d 39 36 2c 68 6d 61 63 2d 6d 64 35 2d 39 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 2d 35 31 32 2c 68 6d 61 63 2d 73 68 61 32 2d 35 31 32 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2d 39 36 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 01 46 68 6d 61 63 2d 73 68 61 31 2c 68 6d 61 63 2d 73 68 61 31 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 31 2d 39 36 2c 68 6d 61 63 2d 73 68 61 31 2d 39 36 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2c 68 6d 61 63 2d 6d 64 35 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2d 39 36 2c 68 6d 61 63 2d 6d 64 35 2d 39 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 2d 35 31 32 2c 68 6d 61 63 2d 73 68 61 32 2d 35 31 32 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2d 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 2d 39 36 2c 68 6d 61 63 2d 72 69 70 65 6d 64 31 36 30 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 00 04 6e 6f 6e 65 00 00 00 04 6e 6f 6e 65 00 00 00 00 00 00 00 00 00 00 00 00 00 a4 80 7b a6 ea a1 04 f8 64
2021-04-08 11:47:02,397 [reader] DEBUG transport.KeyExchanger  - Negotiated algorithms: [ kex=diffie-hellman-group1-sha1; sig=ssh-dss; c2sCipher=3des-cbc; s2cCipher=3des-cbc; c2sMAC=hmac-sha1; s2cMAC=hmac-sha1; c2sComp=none; s2cComp=none; rsaSHA2Support=false ]
2021-04-08 11:47:02,408 [reader] TRACE transport.Encoder  - Encoding packet #1: 1e 00 00 00 80 14 57 f6 c1 3c 95 93 63 24 cf d3 bb 7f f3 45 9f 8a 1e 15 23 56 91 31 9f f8 23 94 d1 c6 34 e7 52 28 58 2c e9 7d b2 69 1b 03 b0 d5 a1 0c ef 46 19 02 e0 28 20 f9 99 5f 3c a3 f8 39 44 ae c2 b7 42 3a f4 64 24 9f e8 87 c0 45 e1 4b 2a d5 94 d8 94 46 c7 04 aa 65 35 26 81 f4 57 64 f8 c1 38 8b cf 0e 18 1e 0c 34 cc aa 09 f4 ac 91 74 56 e5 be 64 b2 13 48 07 64 e3 69 ea 85 57 51 19 ec 74 08 71
2021-04-08 11:47:02,408 [reader] TRACE transport.Encoder  - Encrypting packet #1: 00 00 00 8c 06 1e 00 00 00 80 14 57 f6 c1 3c 95 93 63 24 cf d3 bb 7f f3 45 9f 8a 1e 15 23 56 91 31 9f f8 23 94 d1 c6 34 e7 52 28 58 2c e9 7d b2 69 1b 03 b0 d5 a1 0c ef 46 19 02 e0 28 20 f9 99 5f 3c a3 f8 39 44 ae c2 b7 42 3a f4 64 24 9f e8 87 c0 45 e1 4b 2a d5 94 d8 94 46 c7 04 aa 65 35 26 81 f4 57 64 f8 c1 38 8b cf 0e 18 1e 0c 34 cc aa 09 f4 ac 91 74 56 e5 be 64 b2 13 48 07 64 e3 69 ea 85 57 51 19 ec 74 08 71 b9 b7 9d ac 1d d4
2021-04-08 11:47:02,410 [reader] TRACE transport.Decoder  - Received packet #1: 01 00 00 00 02 00 00 00 11 42 61 64 20 70 61 63 6b 65 74 20 6c 65 6e 67 74 68 00 00 00 00
2021-04-08 11:47:02,410 [reader] TRACE transport.TransportImpl  - Received packet DISCONNECT
2021-04-08 11:47:02,412 [reader] INFO  transport.TransportImpl  - Received SSH_MSG_DISCONNECT (reason=PROTOCOL_ERROR, msg=Bad packet length)
2021-04-08 11:47:02,412 [reader] ERROR transport.TransportImpl  - Dying because - Bad packet length
net.schmizz.sshj.transport.TransportException: [PROTOCOL_ERROR] Bad packet length
	at net.schmizz.sshj.transport.TransportImpl.gotDisconnect(TransportImpl.java:565)
	at net.schmizz.sshj.transport.TransportImpl.handle(TransportImpl.java:521)
	at net.schmizz.sshj.transport.Decoder.decode(Decoder.java:113)
	at net.schmizz.sshj.transport.Decoder.received(Decoder.java:203)
	at net.schmizz.sshj.transport.Reader.run(Reader.java:60)
2021-04-08 11:47:02,412 [reader] INFO  transport.TransportImpl  - Disconnected - PROTOCOL_ERROR
2021-04-08 11:47:02,413 [reader] DEBUG transport.KeyExchanger  - Got notified of net.schmizz.sshj.transport.TransportException: [PROTOCOL_ERROR] Bad packet length
2021-04-08 11:47:02,413 [reader] DEBUG transport.TransportImpl$NullService  - Notified of net.schmizz.sshj.transport.TransportException: [PROTOCOL_ERROR] Bad packet length

[hierynomus]

Hi @jmatias-assia,

I have no idea why it is failing for you. I've looked at all the changes between 0.26.0 and 0.27.0 and the only one I can imagine is that the Encoder class has different behaviour, but I wouldn't know why this would trigger the exception on your server.

Differences: v0.26.0...v0.27.0

Is there a possibility to obtain the server side logs? The appliance should log at least something.

[jmatias-assia]

Sorry, I can't get any logs - it's an embedded server :(

Thanks for your support anyway.