2.2.5.20 NetMeeting Object Manager WSGROUP Send Midway

An Object Manager helper instance sends an OMNET_WSGROUP_SEND_MIDWAY message to advise an Object Manager late joiner instance that its list of worksets currently in use is complete. A helper instance sends this message after sending one or more OMNET_WORKSET_CATCHUP messages to inform the late joiner instance of the workset group contents.


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Sender

messageType

wsGroupID

pad1

correlator

Object ID sequence

Object ID creator

Object ID pad1

maxObjIDSeqUsed

Sender (2 bytes): The local identifier of the user, which is obtained from the Multipoint Communication Service (MCS) [T122] layer. For more information about the MCS user ID, see [T122] section 3 (Definitions) in the ITU-T Recommendation.

messageType (2 bytes): MUST be set to 0x001F.

wsGroupID (1 byte): The workset group ID (unique to the domain). This value is generated internally by the NetMeeting Object Manager. It consists of a value from 0 to 63 that is checked for uniqueness among other NetMeeting nodes present on the network.

pad1 (1 byte): Reserved. MUST be set to zero when sent and MUST be ignored on receipt.

correlator (2 bytes): A monotonically increasing 2-byte sequence number starting at zero.

Object ID sequence (4 bytes): An unsigned 32-bit integer sequence number.

Object ID creator (2 bytes): An unsigned 16-bit integer MCS user ID of the object manager instance that created the Object ID.

Object ID pad1 (2 bytes): Reserved. MUST be set to zero when sent and MUST be ignored on receipt.

maxObjIDSeqUsed (4 bytes): An unsigned 32-bit integer representing the maximum Object ID sequence number previously used by the late joiner user ID in the workset group. This value prevents the re-use of Object IDs.