[cifs-protocol] SMB2 ECHO request
asn at samba.org
Tue Jul 25 15:34:16 UTC 2017
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.
22.214.171.124 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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