Module limit 

Global bandwidth limiting (PRD §23).

One token bucket shared by every worker, so --limit 20MiB/s means the download totals 20 MiB/s rather than each of eight connections getting it. The bucket is a plain mutex + clock rather than a per-worker allowance, which is what makes the limit global and what will let a future daemon share one bucket across several downloads.

Structs

RateLimiter

Functions

parse_duration

Parse 30s, 500ms, 2m, 1h, or a bare number of seconds.

parse_rate

Parse 20MiB/s, 20MB, 1.5m, 500k, 1000 (bytes/s).