SFTP Smart Services

Hi Tanisha,

I was getting the "Auth cancel" error cause our server (on which the file needs to be transferred to) was updated with new public/private key exchange algorithms and this plugin only supports the old exchange algorithms. So, we reverted back the changes which we did on the server to be able to use this plugin - which worked for me. 

Kind regards,
Ankit

Hi Sébastien,

I think you may need to update the Remote file path to include the filename as well. 

Below are the parameters which I have setup for using the "(SFTP) Send File" smart service and was successfully able to send the file over. 

File Transfer Configurations: 'type!{plugins.ps.appiancorp.com/.../}FT_Config'(
   serverHostName: "xyz-abc.au",
   serverPort: 22,
   scsExternalSystemKey: "thirdparty-cred-sftp-key",
   usePerUserCredentials: false(),
   privateKeyFile: "private-key-doc"
)

Remote File Path (type: text): "/home/xyz/testDoc.csv"

Document to Send (type: document): "testDoc"

I hope after updating the remote file path the smart service works for you. 

Kind regards,
Ankit

Hello, after I upgraded the version of SFTP Smart Services to 3.0.2 on 19/01/2024, the plugin 'Send File Over SFTP' is failing with the below:

Error Description: Problem: An error occurred in executing an Activity Class. Details: Error copying the Appian document to the remote server. See application server log for more details. Error Message: Mailbox <mailbox name> not found.

I am able to successfully sent files via the FTP node, but I am unable to open those files.  For example when I attempt to open a PDF that has been sent it tells me "There was an error opening this document.  The file is damaged and could not be repaired."

Hi,

Plugin version used : 3.0.2

Appian environment : Cloud

We've been using this plugin for a while but with an older smart node "Send File Over SFTP (Basic Credentials)" which is Deprecated now.
I was trying to use the newer smart node "Send File Over SFTP".

I've set up a "Third-party credentials" config in the Appian Admin. Configured with fields "username" and "password" only.

Smart node is configured as such :

- File Transfer Configuration : = 'type!{plugins.ps.appiancorp.com/.../}FT_Config'(
serverHostName: cons!hostname,
serverPort: cons!port,
scsExternalSystemKey: "sftpConfig", /* this is the third party credentials name*/
usePerUserCredentials: false
)

- Remote file path : ="/directory"

- Document to send : =testdocument.pdf

I've tried running a process instance using the old deprecated smart node and the newer one. Bot hare using the same connexion parameters.

The old smart node is in SUCCESS status, the newer one is FAILED with this error in the tomcat-stdout log file :

2024-01-17 14:47:00,271 [Appian Work Item - 209342 - WorkID 41 - execution00 - process 117073 - model 11936 : UnattendedJavaActivityRequest] ERROR com.appiancorp.ps.plugins.filetransfer.sftp.SendFileOverSFTP - 24: 

Just to make sure, I changed the "username" value in the third-party credentials configuration, and I got an "Auth failed" error which seems to indicate my Third-Party Credentials is configured correctly. Maybe missing some other parameter ? 

Any help would be appreciated. Thank you in advance.

Sébastien J.

Hi Ankit, I am facing similar issue...were you able to resolve this error? If yes then please let me know how, it would be of great help!

Is there a file size limit on 'Send File Over SFTP' plugin 

We are using version 3.0.2.  Seems the problem has been going on for a couple of versions.  It would be nice to have a response.

Hi, we are experiencing similar issues with version 2.2.2. What version are you using?

Hi.

At the end we have detected the problem, and we think it could be a bug on the plugin.

The key is in the error "Caused by: com.jcraft.jsch.JSchException: Session.connect: java.io.IOException: End of IO Stream Read"

The problem is with the java library JSch. it seems that it does not follow the SSH protocol version exchange correctly.

In the following link you can see more detailed documentation:

https://support.solarwinds.com/SuccessCenter/s/article/SFTP-connection-not-established-for-legacy-Java-clients?language=en_US

Is it reasonable to expect an upgrade of the affected client's JSch library to an RFC-compliant version in new releases?

Thanks in advance.