2.2.7.13 Teardown
The purpose of the Teardown request is to deselect all streams that were previously selected by using SelectStream requests. It also invalidates the RTSP session state.
The Teardown request is defined as the TEARDOWN request method (sent by the client to the server), as specified in [RFC2326] section 10.7, with the following additional constraints:
The TEARDOWN request includes the Session header (as specified in [RFC2326] section 12.37).
The response to the Teardown request is defined as the response to the TEARDOWN request method, with the constraint that the response cannot include a message body.