OPTIONS
The OPTIONS request asks the RTSP server for its supported methods.
Apple TV supports the following methods: ANNOUNCE, SETUP, RECORD,
PAUSE, FLUSH, TEARDOWN, OPTIONS, GET_PARAMETER, SET_PARAMETER,
POST and GET.
client → server
OPTIONS * RTSP/1.0
CSeq: 3
User-Agent: iTunes/10.6 (Macintosh; Intel Mac OS X 10.7.3) AppleWebKit/535.18.5
Client-Instance: 56B29BB6CB904862
DACP-ID: 56B29BB6CB904862
Active-Remote: 1986535575
server → client
RTSP/1.0 200 OK
Public: ANNOUNCE, SETUP, RECORD, PAUSE, FLUSH, TEARDOWN, OPTIONS,
GET_PARAMETER, SET_PARAMETER, POST, GET
Server: AirTunes/130.14
CSeq: 3