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* transfer: bound stall retries and let the watchdog interrupt them A download that stalls could never recover. copy derived its own cancellable context, but the request was built from the parent, so cancelling on a stall never reached the in-flight body and the read stayed parked. The stall watchdog could detect a stall it had no way to stop. Stall retries were also unbounded: they never incremented attempt, so the retry loop had no limit, and because backoff was gated on attempt > 0 they retried with no delay at all. The request now owns the cancellable context and passes its cancel down to copy, so a stall aborts the read. Stalls get their own retry budget before counting against the limit, and backoff is keyed to every retry rather than only the counted ones. * move out of x/
12 lines
439 B
Go
12 lines
439 B
Go
//go:build !windows
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package transfer
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import "os"
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// setSparse is a no-op on non-Windows platforms.
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// On Windows, this sets the FSCTL_SET_SPARSE attribute which allows the OS
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// to not allocate disk blocks for zero-filled regions. This is useful for
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// partial downloads where not all data has been written yet. On Unix-like
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// systems, filesystems typically handle this automatically (sparse by default).
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func setSparse(_ *os.File) {}
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