Just a little help :)) - Githubissues

Hi , you gave me the example code to download chunks and save it as one file.

const chunks = [
    'https://example.com/',
    'https://example.com/',
]

function concatenateRequests(requests) {
    const ts = new TransformStream()
    const pump = () => {
        const it = requests.next()
        if (it.done) return ts.writable.close();
        fetch(it.value).then(res => {
            console.log(res.body);
            return res.body.pipeTo(ts.writable, { preventClose: true })
        }).then(pump, ts.writable.abort.bind(ts.writable));
    }

    pump();

    return ts.readable;
  }

  concatenateRequests(chunks.values()).pipeTo(streamSaver.createWritableStream('archive.zip'))

But i cant catch the error and retry for new url that i will get from server. So can you please make it i loop? for example

async function test(chunks) {

    const ts = new TransformStream();

    for (let x = 0; x < chunks.length; x++) {

        await fetch(x)
            .then(async res => {

                if (!res.ok || res.status !== 200) {
                    // get error message from body or default to response status
                    return Promise.reject(error);
                    throw ('Download failed');
                }

                return res.body.pipeTo(ts.writable, {
                    preventClose: true
                })
            })
            .then(ts.writable.abort.bind(ts.writable))
            .catch(async (error) => {

                // renew the url
                var newURL = await get_fresh_link(x);
                urls[x] = newURL;

                if (x == 1) {
                    x = 1;
                } else {
                    x = x - 1;
                }

            });

    }

    return ts.readable;

}

test(chunks).pipeTo(streamSaver.createWritableStream('archive.zip'))

But its not working.

jimmywarting / StreamSaver.js

Just a little help :)) #283