[cifs-protocol] SR# 117072516091337 :SMB2 ECHO request
Will.Gregg at microsoft.com
Tue Jul 25 15:56:06 UTC 2017
Thank you for contacting the Open Specification Support Team regarding your SMB2 question. I have created a service request for your question and a member of the team will be reaching out to you regarding your issue.
Will Gregg | escalation engineer | open specifications
From: Andreas Schneider [mailto:asn at samba.org]
Sent: Tuesday, July 25, 2017 10:34 AM
To: Interoperability Documentation Help <dochelp at microsoft.com>
Cc: cifs-protocol <cifs-protocol at lists.samba.org>
Subject: SMB2 ECHO request
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The documentation currently state:
2.2.28 SMB2 ECHO Request
The SMB2 ECHO Request packet is sent by a client to determine whether a server is processing requests. This request is composed of an SMB2 header, as specified in section 2.2.1, followed by this request structure:
StructureSize | Reserved | StructureSize (2 bytes): The client MUST set this to 4, indicating the size of the request structure, not including the header.
Reserved (2 bytes): This field MUST NOT be used and MUST be reserved. The client MUST set this to 0, and the server MUST ignore it on receipt.
18.104.22.168 SMB2 Packet Header - ASYNC
SessionId (8 bytes): Uniquely identifies the established session for the command. This field MUST be set to 0 for an SMB2 NEGOTIATE Request (section
2.2.3) and for an SMB2 NEGOTIATE Response (section 2.2.4).
Is it allowed to set the sessionID to 0 for an SMB2 ECHO request too? It looks like Windows allows this.
In addition to the above question, if the client receives an error in the SMB2 ECHO response (STATUS_INVALID_PARAMETER or STAUTS_USER_SESSION_DELETED) should the client terminate the connection to the SMB server?
Could you please clarify?
Thank you very much for your help.
Andreas Schneider GPG-ID: CC014E3D
Samba Team asn at samba.org
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