pub const BURST_LOOKUPS: usize = 32;Expand description
Lookups one connection may take from SHARED_LOOKUPS at once.
The reserved slot below is what guarantees progress; this is what keeps the guarantee worth having. A connection opening a page’s worth of tunnels wants its lookups to run at once, so the figure is well clear of a browser’s per-page domain count, and four connections at it exhaust the shared allowance – which is the point at which everyone else falls back on their reserved slot rather than on nothing.