A subscriber issues a UNSUBSCRIBE message to a publisher indicating it is no
longer interested in receiving media for the specified track and Objects
should stop being sent as soon as possible. The publisher sends a
SUBSCRIBE_DONE to acknowledge the unsubscribe was successful and indicate
the final Object.
The format of UNSUBSCRIBE is as follows:
UNSUBSCRIBE Message {
Type (i) = 0xA,
Length (i),
Subscribe ID (i)
}
-
Subscribe ID: Subscription Identifier as defined in Section 6.4.