A potential subscriber sends a 'TRACK_STATUS_REQUEST' message on the control stream to obtain information about the current status of a given track.
A TRACK_STATUS message MUST be sent in response to each TRACK_STATUS_REQUEST.
TRACK_STATUS_REQUEST Message {
Type (i) = 0xD,
Length (i),
Track Namespace (tuple),
Track Name Length (i),
Track Name (..),
}