[RTSP][2012-06-16] RTSP OPTIONS

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Methods: OPTIONS

direction: Client to Server
requirement: Required
作用: 當Client 要使用非標準的 method 時, Client 就會向 Server 發出這個 Request, 而 Server 則會傳回它所提供的可使用的 methods.

Example:

C -> S :
        OPTIONS * RTSP/1.0 1
        PEP:     {{map "http://www.iana.org/rtsp/implicit-play"}}
                     {{map "http://www.iana.org/rtsp/record-feature"}}
        C-PEP: {{map "http://www.iana.org/rtsp/udp-control"}}
                     {{map "http://www.iana.rog/rtsp/gzipped-messages"}}
S -> C :
        RTSP/1.0 200 1 OK
        PEP-Info:        {{map "http://www.iana.org/rtsp/implicit-play"} {for "/" *}}
                                {{map "http://www.iana.org/rtsp/record-feature"} {for "/" *}}
        C-PEP-Info:    {{map "http://www.iana.org/rtsp/udp-control"} {for "/" *}}
                                {{map "http://www.iana.org/rtsp/gzipped-messages"} {for "/" *}}
        Public: DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE

======

C -> S :
        OPTIONS * RTSP/1.0
        CSeq: 1

S -> C :
        RTSP/1.0 200 OK
        CSeq: 1
        Public: DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE