[SSHD-411] SSH_FX_OP_UNSUPPORTED should not be logged as error

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.12.0
• Fix Version/s: 0.14.0, 1.0.0
• Assignee: Guillaume Nodet
• Reporter: Rob Moore
• Created: 20/Feb/15 22:50
• Updated: 23/Feb/15 15:41
• Resolved: 23/Feb/15 15:41

Description

Clients can send unsupported SFTP messages but it doesn't seem like this is an error in terms of the SFTP implementation but rather something invalid that the client has chosen to do. While I think it makes sense to respond to the client with an error, it seems questionable whether it should be logged at this level.

We are seeing "-56" sent quite frequently by clients and our monitoring is triggered since it's logged as an error.