LIBSSH2_ERROR_SOCKET_RECV using SFTP

[Novi]

Hello,

I just updated to the latest version (7.9) and have now some issues while using the file compare with sftp. I always get errors after a short period of time containing one of the following error messages:

Fehlercode LIBSSH2_ERROR_SOCKET_RECV: Unable to send FXP_OPEN* (libssh2_sftp_opendir)

Fehlercode LIBSSH2_ERROR_SOCKET_RECV: channel read (libssh2_sftp_write)


May these errors be related to the change "Buffer SFTP read/write accesses for optimal packet sizes"?

Edit:
I still used version 7.7 before. Thus, the problem might exists in version 7.8 as well.

Best Regards
Novi

[Zenju]

May these errors be related to the change "Buffer SFTP read/write accesses for optimal packet sizes"?

Possibly. Can you provide a test account on your SFTP server for more detailed troubleshooting?

[Novi]

The SFTP server is installed on a NAS system located in my local network. Thus, I hesitate in providing a test account accessible from the Internet.

The NAS is a disk station from Synology (DS214; DSM 5.2-5644 Update 5). The used ftp server software is SmbFTP (2.0) https://www.twbsd.org/enu/smbftpd/index.php

[Novi]

The problem suddenly disappeared. It might be an update of DSM which fixed the problem. Today I was not able to reproduce the bug.

[Matias]

Hello Guys, I have the same issue connecting through SFTP, can anyone tell me how to debug the isssue?

What are the possible cuases?

By the way, I can connect to my SFTP account using Filezilla or Windows Explorer, so the issue is just with FreeFileSync, I used the same credentials to acces my account.