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make vlc range cache startup non-blocking

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dirtydishes 2026-05-26 20:43:25 -04:00
parent c4236afe7a
commit f141d26fb5
6 changed files with 424 additions and 4 deletions
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38
Tests/StreamResolverTests.swift
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@ -43,6 +43,9 @@ struct StreamResolverTests {
testRangeCacheForegroundMissFetchesAlignedChunks()
await testRangeCacheForegroundMissReprioritizesPrefetch()
await testRangeCacheHitFollowsActualPostSeekReadArea()
testRangeCacheStartupPolicySkipsHLSAndNonHTTPImmediately()
testRangeCacheStartupPolicyUsesCacheOnlyForConclusiveProbe()
testRangeCacheStartupPolicySkipsInconclusiveProbe()
await testRangeProbeAllowsRangeCacheForMKVWhenServerSupportsRanges()
await testRangeProbeAppliesRequestTimeout()
await testRangeProbeFallsBackWhenServerIgnoresRange()
@ -542,6 +545,41 @@ struct StreamResolverTests {
try? await Task.sleep(nanoseconds: 50_000_000)
}
private static func testRangeCacheStartupPolicySkipsHLSAndNonHTTPImmediately() {
assertEqual(
HTTPRangeCacheStartupPolicy.immediateSkipReason(for: URL(string: "https://cdn.example.test/live.m3u8")!),
"hls-playlist"
)
assertEqual(
HTTPRangeCacheStartupPolicy.immediateSkipReason(for: URL(string: "file:///tmp/movie.mkv")!),
"non-http-url"
)
assertEqual(
HTTPRangeCacheStartupPolicy.immediateSkipReason(for: URL(string: "https://cdn.example.test/movie.mkv")!),
nil
)
}
private static func testRangeCacheStartupPolicyUsesCacheOnlyForConclusiveProbe() {
let decision = HTTPRangeCacheStartupPolicy.decision(
for: HTTPRangeProbeResult(isCacheable: true, contentLength: 20, fallbackReason: nil)
)
assertEqual(decision, .useLocalCache)
}
private static func testRangeCacheStartupPolicySkipsInconclusiveProbe() {
let rejectedDecision = HTTPRangeCacheStartupPolicy.decision(
for: HTTPRangeProbeResult(isCacheable: false, contentLength: nil, fallbackReason: "range-probe-status-200")
)
let missingLengthDecision = HTTPRangeCacheStartupPolicy.decision(
for: HTTPRangeProbeResult(isCacheable: true, contentLength: nil, fallbackReason: nil)
)
assertEqual(rejectedDecision, .skip(reason: "range-probe-status-200"))
assertEqual(missingLengthDecision, .skip(reason: "range-probe-inconclusive"))
}
private static func testRangeProbeAllowsRangeCacheForMKVWhenServerSupportsRanges() async {
var requestCount = 0
MockURLProtocol.handler = { request in