Parsing UTC timing response fails

[dsilhavy]

The UTCTiming element in the livesim2 streams currently points to this URL: https://time.akamai.com/?ms. It uses a schemeIdUri set to urn:mpeg:dash:utc:http-xsdate:2014.

This combination leads to parsing errors in dash.js and the Shaka player. I think the correct URL for the schmeIdUri defined above is this one: https://time.akamai.com/?iso&ms

Example MPD: https://livesim2.dashif.org/livesim2/testpic_2s/Manifest.mpd

[tobbee]

I thought the ISO in the URL meant that the format was iso format, so I have the table:

const (
	UtcTimingDirect       UTCTimingMethod = "direct"
	UtcTimingHead         UTCTimingMethod = "head"
	UtcTimingNtp          UTCTimingMethod = "ntp"
	UtcTimingSntp         UTCTimingMethod = "sntp"
	UtcTimingHttpXSDate   UTCTimingMethod = "httpxsdate"
	UtcTimingHttpXSDateMs UTCTimingMethod = "httpxsdatems"
	UtcTimingHttpISO      UTCTimingMethod = "httpiso"
	UtcTimingHttpISOMs    UTCTimingMethod = "httpisoms"
	UtcTimingNone         UTCTimingMethod = "none"
	UtcTimingKeep         UTCTimingMethod = "keep"
)

const (
	UtcTimingNtpServer          = "1.de.pool.ntp.org"
	UtcTimingSntpServer         = "time.kfki.hu"
	UtcTimingXSDateHttpServer   = "https://time.akamai.com"
	UtcTimingXSDateHttpServerMS = "https://time.akamai.com/?ms"
	UtcTimingISOHttpServer      = "https://time.akamai.com/?iso"
	UtcTimingISOHttpServerMS    = "https://time.akamai.com/?iso&ms"
	UtcTimingHeadAsset          = "/static/time.txt"
)

Should the xsdate and iso formats be swapped?

[tobbee]

Reading the specs, I cannot see that there is any real difference between the xsdate and iso formats, so I will
make them both point to the ?iso URL variants.

[tobbee]

The fix in #148 has been merged into v1.1.1 and published on https://livesim2.dashif.org