2.2.4.2 X-AvailableSeekRange
The X-AvailableSeekRange header is defined for use in responses sent to a client.
The header specifies the allowed range that the client can specify when sending an HTTP GET request with the TimeSeekRange.dlna.org HTTP header.
The syntax of the X-AvailableSeekRange header is defined as follows:
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X-AvailableSeekRange = "X-AvailableSeekRange: 1 npt=" start "-" stop start = npt-time ; defined in [DLNA] guideline 7.4.13 stop = npt-time ; defined in [DLNA] guideline 7.4.13
The start token MUST specify an npt-time value that less than or equal to the value of the stop token. The range specified by the X-AvailableSeekRange is an inclusive range. For example, if the range is specified as 0-100, it means that the client can send a GET request with the TimeSeekRange.dlna.org requesting the server to seek to 0, 100, or any value in between.