22.214.171.124 Receiving an SMB2 ECHO Request
When the server receives a request with an SMB2 header with a Command value equal to SMB2 ECHO, message handling proceeds as follows:
If Connection.SessionTable is empty, the server SHOULD<325> disconnect the connection.
The status code returned by this operation MUST be one of those defined in [MS-ERREF]. Common status codes returned by this operation include: