@lodestar/beacon-node/lib/sync/utils/rateLimit.js

A Typescript implementation of the beacon chain

import { RequestError, RequestErrorCode } from "@lodestar/reqresp";
import { RATE_LIMITED_PEER_BACKOFF_MS } from "../constants.js";
export function getRateLimitedUntilMs(e) {
    if (!(e instanceof RequestError)) {
        return null;
    }
    switch (e.type.code) {
        case RequestErrorCode.RESP_RATE_LIMITED:
        case RequestErrorCode.REQUEST_SELF_RATE_LIMITED:
            return e.type.rateLimitedUntilMs ?? Date.now() + RATE_LIMITED_PEER_BACKOFF_MS;
        default:
            return null;
    }
}
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