pub const APP_ERR_RATE_LIMITED: u32 = 0x10;Expand description
Connection rejected by the per-source or global rate limiter (ADR 013 §0x10).
Unlike 0x01–0x03, this code is delivered via CONNECTION_CLOSE rather
than RESET_STREAM because the rejection happens before any application
stream is opened. The close-frame reason bytes carry a short layer label
(e.g. global-full, per-source) so the peer can pick an appropriate
backoff. Peers that receive this code SHOULD back off before
reconnecting; they MUST NOT treat it as a protocol error (the server is
functioning normally — the client is overloading it). The requester side
(decdn-client) types this code as UpstreamRateLimited so the pull
orchestrator suppresses the peer briefly instead of scoring it unreachable.