2.2.5.1 WDSMCTP_OPT_CAPABILITIES

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This Extended Option is used to communicate optional capabilities of the client. If the JOIN packet does not specify this Extended Option, then the server MUST assume that the client does not support any optional capabilities.

The value for this Extended Option is a byte array, where each element of the array specifies a numeric value used to identify optional capabilities supported by client. If a numeric value for specific capability is not specified for the Extended Option value, then the server MUST assume that the client does not support it.

The following list specifies the optional capabilities that MAY be supported by clients.

Optional Capability

Description

WDSMCTP_CAP_MULTISTREAM

0x01

The client MAY specify this capability. When specified, it means that client supports demotion to a lower speed multicast session if the server determines that the client is slow.<3>