A Subscriber issues an UNSUBSCRIBE message to a Publisher indicating it is no
longer interested in receiving the specified Track, indicating that the
Publisher stop sending Objects as soon as possible.
The format of UNSUBSCRIBE is as follows:
UNSUBSCRIBE Message {
Type (i) = 0xA,
Length (16),
Request ID (i)
}
-
Request ID: The Request ID of the subscription that is being terminated. See Section 9.7.