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370 lines
36 KiB
370 lines
36 KiB
package liveurls
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import (
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"context"
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"github.com/gin-gonic/gin"
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"io"
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"net"
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"net/http"
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"net/url"
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"regexp"
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"strings"
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"sync"
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"time"
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)
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type Itv struct{}
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var (
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hostMappings = map[string]string{
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"cache.ott.ystenlive.itv.cmvideo.cn": "feiyangdigital.tg.ystenlive.ottdns.com",
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"cache.ott.bestlive.itv.cmvideo.cn": "feiyangdigital.tg.bestlive.ottdns.com",
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"cache.ott.wasulive.itv.cmvideo.cn": "feiyangdigital.tg.wasulive.ottdns.com",
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"cache.ott.fifalive.itv.cmvideo.cn": "feiyangdigital.tg.fifalive.ottdns.com",
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"cache.ott.hnbblive.itv.cmvideo.cn": "feiyangdigital.tg.hnbblive.ottdns.com",
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}
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programList = map[string]string{
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"wasusyt/6000000001000029752.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000029752/1.m3u8?channel-id=wasusyt&Contentid=6000000001000029752&livemode=1&stbId=3",
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"bestzb/5000000004000002226.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000002226/1.m3u8?channel-id=bestzb&Contentid=5000000004000002226&livemode=1&stbId=3",
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"ystenlive/1000000005000265001.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265001/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265001&livemode=1&stbId=3",
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"ystenlive/1000000001000023315.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000023315/1.m3u8?channel-id=ystenlive&Contentid=1000000001000023315&livemode=1&stbId=3",
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"wasusyt/6000000001000014161.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000014161/1.m3u8?channel-id=wasusyt&Contentid=6000000001000014161&livemode=1&stbId=3",
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"wasusyt/6000000001000022313.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000022313/1.m3u8?channel-id=wasusyt&Contentid=6000000001000022313&livemode=1&stbId=3",
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"ystenlive/1000000005000265003.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265003/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265003&livemode=1&stbId=3",
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"bestzb/5000000011000031102.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031102/1.m3u8?channel-id=bestzb&Contentid=5000000011000031102&livemode=1&stbId=3",
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"ystenlive/1000000005000265004.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265004/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265004&livemode=1&stbId=3",
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"ystenlive/1000000005000025222.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000025222/1.m3u8?channel-id=ystenlive&Contentid=1000000005000025222&livemode=1&stbId=3",
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"ystenlive/1000000005000265005.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265005/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265005&livemode=1&stbId=3",
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"wasusyt/6000000001000015875.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000015875/1.m3u8?channel-id=wasusyt&Contentid=6000000001000015875&livemode=1&stbId=3",
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"ystenlive/1000000005000265016.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265016/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265016&livemode=1&stbId=3",
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"ystenlive/1000000001000001737.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000001737/1.m3u8?channel-id=ystenlive&Contentid=1000000001000001737&livemode=1&stbId=3",
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"wasusyt/6000000001000004574.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000004574/1.m3u8?channel-id=wasusyt&Contentid=6000000001000004574&livemode=1&stbId=3",
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"ystenlive/1000000005000265006.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265006/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265006&livemode=1&stbId=3",
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"ystenlive/1000000001000024341.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000024341/1.m3u8?channel-id=ystenlive&Contentid=1000000001000024341&livemode=1&stbId=3",
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"wasusyt/6000000001000009055.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000009055/1.m3u8?channel-id=wasusyt&Contentid=6000000001000009055&livemode=1&stbId=3",
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"ystenlive/1000000005000265007.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265007/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265007&livemode=1&stbId=3",
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"wasusyt/6000000001000001070.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000001070/1.m3u8?channel-id=wasusyt&Contentid=6000000001000001070&livemode=1&stbId=3",
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"ystenlive/1000000005000265008.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265008/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265008&livemode=1&stbId=3",
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"ystenlive/1000000001000014583.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000014583/1.m3u8?channel-id=ystenlive&Contentid=1000000001000014583&livemode=1&stbId=3",
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"wasusyt/6000000001000032162.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000032162/1.m3u8?channel-id=wasusyt&Contentid=6000000001000032162&livemode=1&stbId=3",
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"ystenlive/1000000005000265009.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265009/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265009&livemode=1&stbId=3",
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"ystenlive/1000000001000023734.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000023734/1.m3u8?channel-id=ystenlive&Contentid=1000000001000023734&livemode=1&stbId=3",
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"bestzb/5000000004000012827.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000012827/1.m3u8?channel-id=bestzb&Contentid=5000000004000012827&livemode=1&stbId=3",
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"ystenlive/1000000005000265010.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265010/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265010&livemode=1&stbId=3",
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"bestzb/5000000011000031106.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031106/1.m3u8?channel-id=bestzb&Contentid=5000000011000031106&livemode=1&stbId=3",
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"ystenlive/1000000005000265011.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265011/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265011&livemode=1&stbId=3",
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"ystenlive/1000000001000032494.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000032494/1.m3u8?channel-id=ystenlive&Contentid=1000000001000032494&livemode=1&stbId=3",
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"wasusyt/6000000001000022586.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000022586/1.m3u8?channel-id=wasusyt&Contentid=6000000001000022586&livemode=1&stbId=3",
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"ystenlive/1000000005000265012.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265012/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265012&livemode=1&stbId=3",
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"bestzb/5000000011000031108.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031108/1.m3u8?channel-id=bestzb&Contentid=5000000011000031108&livemode=1&stbId=3",
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"ystenlive/1000000001000008170.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000008170/1.m3u8?channel-id=ystenlive&Contentid=1000000001000008170&livemode=1&stbId=3",
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"bestzb/5000000004000006673.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000006673/1.m3u8?channel-id=bestzb&Contentid=5000000004000006673&livemode=1&stbId=3",
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"ystenlive/1000000005000265013.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265013/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265013&livemode=1&stbId=3",
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"bestzb/5000000011000031109.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031109/1.m3u8?channel-id=bestzb&Contentid=5000000011000031109&livemode=1&stbId=3",
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"ystenlive/1000000005000265014.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265014/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265014&livemode=1&stbId=3",
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"ystenlive/1000000006000233002.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000006000233002/1.m3u8?channel-id=ystenlive&Contentid=1000000006000233002&livemode=1&stbId=3",
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"bestzb/5000000008000023254.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000008000023254/1.m3u8?channel-id=bestzb&Contentid=5000000008000023254&livemode=1&stbId=3",
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"ystenlive/1000000006000268004.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000006000268004/1.m3u8?channel-id=ystenlive&Contentid=1000000006000268004&livemode=1&stbId=3",
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"ystenlive/1000000005000265015.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265015/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265015&livemode=1&stbId=3",
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"hnbblive/7745129417417101820.m3u8": "http://gslbserv.itv.cmvideo.cn:80/7745129417417101820/1.m3u8?channel-id=hnbblive&Contentid=7745129417417101820&livemode=1&stbId=3",
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"hnbblive/7114647837765104058.m3u8": "http://gslbserv.itv.cmvideo.cn:80/7114647837765104058/1.m3u8?channel-id=hnbblive&Contentid=7114647837765104058&livemode=1&stbId=3",
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"bestzb/5000000002000002652.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000002000002652/1.m3u8?channel-id=bestzb&Contentid=5000000002000002652&livemode=1&stbId=3",
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"bestzb/5000000011000031126.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031126/1.m3u8?channel-id=bestzb&Contentid=5000000011000031126&livemode=1&stbId=3",
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"wasusyt/6000000001000020451.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000020451/1.m3u8?channel-id=wasusyt&Contentid=6000000001000020451&livemode=1&stbId=3",
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"ystenlive/1000000005000265027.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265027/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265027&livemode=1&stbId=3",
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"ystenlive/1000000001000001910.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000001910/1.m3u8?channel-id=ystenlive&Contentid=1000000001000001910&livemode=1&stbId=3",
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"ystenlive/1000000005000265020.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265020/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265020&livemode=1&stbId=3",
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"bestzb/7851974109718180595.m3u8": "http://gslbserv.itv.cmvideo.cn:80/7851974109718180595/1.m3u8?channel-id=bestzb&Contentid=7851974109718180595&livemode=1&stbId=3",
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"ystenlive/1000000001000030159.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000030159/1.m3u8?channel-id=ystenlive&Contentid=1000000001000030159&livemode=1&stbId=3",
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"wasusyt/6000000001000009954.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000009954/1.m3u8?channel-id=wasusyt&Contentid=6000000001000009954&livemode=1&stbId=3",
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"ystenlive/1000000005000265025.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265025/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265025&livemode=1&stbId=3",
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"bestzb/5000000004000010584.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000010584/1.m3u8?channel-id=bestzb&Contentid=5000000004000010584&livemode=1&stbId=3",
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"ystenlive/1000000005000265033.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265033/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265033&livemode=1&stbId=3",
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"bestzb/5000000011000031121.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031121/1.m3u8?channel-id=bestzb&Contentid=5000000011000031121&livemode=1&stbId=3",
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"ystenlive/1000000001000014176.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000014176/1.m3u8?channel-id=ystenlive&Contentid=1000000001000014176&livemode=1&stbId=3",
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"wasusyt/6000000001000031076.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000031076/1.m3u8?channel-id=wasusyt&Contentid=6000000001000031076&livemode=1&stbId=3",
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"ystenlive/1000000005000265034.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265034/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265034&livemode=1&stbId=3",
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"bestzb/5000000011000031118.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031118/1.m3u8?channel-id=bestzb&Contentid=5000000011000031118&livemode=1&stbId=3",
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"bestzb/5000000004000025843.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000025843/1.m3u8?channel-id=bestzb&Contentid=5000000004000025843&livemode=1&stbId=3",
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"bestzb/5000000004000006211.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000006211/1.m3u8?channel-id=bestzb&Contentid=5000000004000006211&livemode=1&stbId=3",
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"bestzb/5000000006000040016.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000006000040016/1.m3u8?channel-id=bestzb&Contentid=5000000006000040016&livemode=1&stbId=3",
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"bestzb/5000000011000031119.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031119/1.m3u8?channel-id=bestzb&Contentid=5000000011000031119&livemode=1&stbId=3",
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"ystenlive/1000000001000001925.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000001925/1.m3u8?channel-id=ystenlive&Contentid=1000000001000001925&livemode=1&stbId=3",
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"wasusyt/6000000001000016510.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000016510/1.m3u8?channel-id=wasusyt&Contentid=6000000001000016510&livemode=1&stbId=3",
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"ystenlive/1000000005000265029.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265029/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265029&livemode=1&stbId=3",
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"ystenlive/1000000001000024621.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000024621/1.m3u8?channel-id=ystenlive&Contentid=1000000001000024621&livemode=1&stbId=3",
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"wasusyt/6000000001000015436.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000015436/1.m3u8?channel-id=wasusyt&Contentid=6000000001000015436&livemode=1&stbId=3",
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"ystenlive/1000000005000265023.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265023/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265023&livemode=1&stbId=3",
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"bestzb/5000000004000006692.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000006692/1.m3u8?channel-id=bestzb&Contentid=5000000004000006692&livemode=1&stbId=3",
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"wasusyt/6000000001000018044.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000018044/1.m3u8?channel-id=wasusyt&Contentid=6000000001000018044&livemode=1&stbId=3",
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"ystenlive/1000000005000265024.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265024/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265024&livemode=1&stbId=3",
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"bestzb/5000000011000031203.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031203/1.m3u8?channel-id=bestzb&Contentid=5000000011000031203&livemode=1&stbId=3",
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"bestzb/5000000011000031206.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031206/1.m3u8?channel-id=bestzb&Contentid=5000000011000031206&livemode=1&stbId=3",
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"bestzb/5000000011000031209.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031209/1.m3u8?channel-id=bestzb&Contentid=5000000011000031209&livemode=1&stbId=3",
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"bestzb/5000000011000031117.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000011000031117/1.m3u8?channel-id=bestzb&Contentid=5000000011000031117&livemode=1&stbId=3",
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"wasusyt/6000000001000014861.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000014861/1.m3u8?channel-id=wasusyt&Contentid=6000000001000014861&livemode=1&stbId=3",
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"ystenlive/1000000001000001828.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000001828/1.m3u8?channel-id=ystenlive&Contentid=1000000001000001828&livemode=1&stbId=3",
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"ystenlive/1000000005000265030.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265030/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265030&livemode=1&stbId=3",
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"ystenlive/1000000006000268001.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000006000268001/1.m3u8?channel-id=ystenlive&Contentid=1000000006000268001&livemode=1&stbId=3",
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"ystenlive/1000000005000265032.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265032/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265032&livemode=1&stbId=3",
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"bestzb/5000000004000011671.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000011671/1.m3u8?channel-id=bestzb&Contentid=5000000004000011671&livemode=1&stbId=3",
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"ystenlive/1000000005000265022.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265022/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265022&livemode=1&stbId=3",
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"ystenlive/1000000002000013359.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000002000013359/1.m3u8?channel-id=ystenlive&Contentid=1000000002000013359&livemode=1&stbId=3",
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"ystenlive/1000000001000016568.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000001000016568/1.m3u8?channel-id=ystenlive&Contentid=1000000001000016568&livemode=1&stbId=3",
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"wasusyt/6000000001000004134.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000004134/1.m3u8?channel-id=wasusyt&Contentid=6000000001000004134&livemode=1&stbId=3",
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"ystenlive/1000000005000265019.m3u8": "http://gslbserv.itv.cmvideo.cn:80/1000000005000265019/1.m3u8?channel-id=ystenlive&Contentid=1000000005000265019&livemode=1&stbId=3",
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"wasusyt/6000000001000003639.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000001000003639/1.m3u8?channel-id=wasusyt&Contentid=6000000001000003639&livemode=1&stbId=3",
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"bestzb/5000000004000014098.m3u8": "http://gslbserv.itv.cmvideo.cn:80/5000000004000014098/1.m3u8?channel-id=bestzb&Contentid=5000000004000014098&livemode=1&stbId=3",
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"wasusyt/6000000006000030630.m3u8": "http://gslbserv.itv.cmvideo.cn:80/6000000006000030630/1.m3u8?channel-id=wasusyt&Contentid=6000000006000030630&livemode=1&stbId=3",
|
|
}
|
|
|
|
dnsCache = sync.Map{}
|
|
successCacheTime = 24 * time.Hour
|
|
)
|
|
|
|
type cacheEntry struct {
|
|
ip string
|
|
expiry time.Time
|
|
}
|
|
|
|
func (i *Itv) HandleMainRequest(c *gin.Context, cdn, id string) {
|
|
key := cdn + "/" + id
|
|
startUrl, ok := programList[key]
|
|
if !ok {
|
|
c.String(http.StatusNotFound, "id not found!")
|
|
return
|
|
}
|
|
|
|
data, redirectURL, err := getHTTPResponse(startUrl)
|
|
if err != nil {
|
|
c.String(http.StatusInternalServerError, err.Error())
|
|
return
|
|
}
|
|
redirectPrefix := redirectURL[:strings.LastIndex(redirectURL, "/")+1]
|
|
|
|
// 替换TS文件的链接
|
|
golang := "http://" + c.Request.Host + c.Request.URL.Path
|
|
re := regexp.MustCompile(`((?i).*?\.ts)`)
|
|
data = re.ReplaceAllStringFunc(data, func(match string) string {
|
|
return golang + "?ts=" + redirectPrefix + match
|
|
})
|
|
|
|
// 将&替换为$
|
|
data = strings.ReplaceAll(data, "&", "$")
|
|
|
|
c.Header("Content-Disposition", "attachment;filename="+id)
|
|
c.String(http.StatusOK, data)
|
|
}
|
|
|
|
func (i *Itv) HandleTsRequest(c *gin.Context, ts string) {
|
|
// 将$替换回&
|
|
ts = strings.ReplaceAll(ts, "$", "&")
|
|
|
|
c.Header("Content-Type", "video/MP2T")
|
|
content, _, err := getHTTPResponse(ts)
|
|
if err != nil {
|
|
c.String(http.StatusInternalServerError, err.Error())
|
|
return
|
|
}
|
|
c.String(http.StatusOK, content)
|
|
}
|
|
|
|
func getHTTPResponse(requestURL string) (string, string, error) {
|
|
dialer := &net.Dialer{
|
|
Timeout: 5 * time.Second,
|
|
}
|
|
|
|
// 自定义resolver
|
|
resolver := net.Resolver{
|
|
PreferGo: true,
|
|
Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
|
|
for originalHost, mappedHost := range hostMappings {
|
|
if strings.Contains(address, originalHost) {
|
|
ip := resolveIP(mappedHost)
|
|
if ip != "" {
|
|
address = strings.Replace(address, originalHost, ip, 1)
|
|
}
|
|
}
|
|
}
|
|
return dialer.DialContext(ctx, network, address)
|
|
},
|
|
}
|
|
|
|
client := &http.Client{
|
|
Transport: &http.Transport{
|
|
DialContext: resolver.Dial,
|
|
},
|
|
}
|
|
|
|
resp, err := client.Get(requestURL)
|
|
if err != nil {
|
|
clearCache(requestURL) // 清除缓存失败的IP
|
|
return "", "", err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
redirectURL := resp.Header.Get("Location")
|
|
if redirectURL == "" {
|
|
redirectURL = requestURL
|
|
}
|
|
|
|
body, err := readResponseBody(resp)
|
|
if err != nil {
|
|
clearCache(requestURL) // 清除缓存失败的IP
|
|
return "", "", err
|
|
}
|
|
|
|
// 调整缓存时间：仅在成功获取内容时缓存24小时
|
|
if resp.StatusCode == http.StatusOK {
|
|
updateCacheTime(requestURL, successCacheTime)
|
|
}
|
|
|
|
return body, redirectURL, nil
|
|
}
|
|
|
|
func resolveIP(host string) string {
|
|
now := time.Now()
|
|
if entry, found := dnsCache.Load(host); found {
|
|
cachedEntry := entry.(cacheEntry)
|
|
if now.Before(cachedEntry.expiry) {
|
|
return cachedEntry.ip
|
|
}
|
|
dnsCache.Delete(host)
|
|
}
|
|
|
|
ips, err := net.LookupIP(host)
|
|
if err != nil || len(ips) == 0 {
|
|
return ""
|
|
}
|
|
|
|
ip := ips[0].String()
|
|
dnsCache.Store(host, cacheEntry{ip: ip, expiry: now})
|
|
return ip
|
|
}
|
|
|
|
func updateCacheTime(requestURL string, duration time.Duration) {
|
|
host := extractHost(requestURL)
|
|
if entry, found := dnsCache.Load(host); found {
|
|
cachedEntry := entry.(cacheEntry)
|
|
cachedEntry.expiry = time.Now().Add(duration)
|
|
dnsCache.Store(host, cachedEntry)
|
|
}
|
|
}
|
|
|
|
func clearCache(requestURL string) {
|
|
host := extractHost(requestURL)
|
|
dnsCache.Delete(host)
|
|
}
|
|
|
|
func extractHost(requestURL string) string {
|
|
parsedURL, err := url.Parse(requestURL)
|
|
if err != nil {
|
|
return ""
|
|
}
|
|
return parsedURL.Host
|
|
}
|
|
|
|
func readResponseBody(resp *http.Response) (string, error) {
|
|
var builder strings.Builder
|
|
_, err := io.Copy(&builder, resp.Body)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return builder.String(), nil
|
|
}
|
|
|