Module config 

DashConfig: the DASH-specific knobs of a client session.

docs/dash-runtime/DESIGN.md 6.4 (fields and defaults), 3.2-3.4 (clock ladder), 5.2 (refresh floor), 5.4 (early-request cadence), D9 (LL-DASH) and 10.2 R3 (cross-origin restriction). Pure data: nothing here reads a clock. Every duration is in microseconds. A value of u64::MAX is accepted wherever zero is not: consumers combine these with saturating arithmetic, so MAX reads as “never” or “unbounded” rather than overflowing.

Structs

DashConfig

DASH-specific configuration. The knobs shared with every segment-pull source (redirects, headers, cookies, backoff, in-flight window, body caps, playout, timeline-jump detection) stay on the session’s own config.

DashConfigError

A DashConfig field no client can run with.

PullLimits

The knobs every segment-pull source shares (DESIGN 6.4, “shared with HLS”): the session owns them in its own config and passes them in; they are deliberately not part of DashConfig.

PullLimitsError

A rejected PullLimits.

Enums

DashClockPolicy

Which clock source the ladder tries first for a dynamic MPD.

Constants

DEFAULT_AVAILABILITY_MARGIN_US

Default margin added to a segment’s availability start before requesting it.

DEFAULT_EARLY_GRACE_US

Default window after a segment’s availability start in which a 404, 410 or 425 still means “too early” rather than “missing”.

DEFAULT_EARLY_RETRY_US

Default first retry delay for a segment requested before it exists.

DEFAULT_HOST_CLOCK_UNCERTAINTY_US

Default error bar reported for a host-supplied clock.

DEFAULT_MAX_INFLIGHT_SEGMENTS

Default number of segment requests kept outstanding at once.

DEFAULT_MAX_INIT_FAILURES

Default consecutive failures of one init or index resource before the presentation is given up on.

DEFAULT_MAX_SEGMENT_BYTES

Default bound on one fetched resource body (init, index or segment).

DEFAULT_MAX_SEGMENT_FAILURES

Default consecutive failures of one segment before it is given up on.

DEFAULT_MIN_MPD_REFRESH_US

Default floor under the MPD refresh interval.

DEFAULT_UTC_MAX_RTT_US

Default longest round trip a UTCTiming sample may have and still be used.

DEFAULT_UTC_RESYNC_US

Default age after which a same-source clock anchor is replaced.

DEFAULT_UTC_TIMEOUT_US

Default time one UTCTiming request may take.

DEFAULT_UTC_WAIT_US

Default total wait for a UTCTiming sample before the clock ladder falls through to the next source.