// 对数组内所有地址进行请求，返回第一个成功的请求结果并打断其他请求
const 并发请求 = async (urls, url) => {
    let controller = new AbortController()
    const PauseProgress = async (res) => {
        return new Response(await res.arrayBuffer(), {
            status: res.status,
            headers: res.headers,
        })
    }
    if (!Promise.any) {
        Promise.any = function (promises) {
            return new Promise((resolve, reject) => {
                promises = Array.isArray(promises) ? promises : []
                let len = promises.length
                let errs = []
                if (len === 0)
                    return reject(new AggregateError('All promises were rejected'))
                promises.forEach((promise) => {
                    promise.then(
                        (value) => {
                            resolve(value)
                        },
                        (err) => {
                            len--
                            errs.push(err)
                            if (len === 0) {
                                reject(new AggregateError(errs))
                            }
                        },
                    )
                })
            })
        }
    }
    return Promise.any(
        urls.map((urls) => {
            return new Promise((resolve, reject) => {
                fetch(urls, {
                    signal: controller.signal,
                })
                    .then(PauseProgress)
                    .then((res) => {
                        if (res.status  200 || res.status  304 || res.status == 404) {
                            controller.abort()
                            resolve(res)
                        } else {
                            reject(res)
                        }
                    })
                    .catch((e) => reject(e))
            })
        }),
    )
}
// 网络请求处理函数
if (req.url.includes('hdslb.com')) {
    // 获取路径
    const path = req.url.replace(/(https|http)?:\/\/(.[^/]+)/, '')
    const 站点镜像源 = [
        `https://i0.hdslb.com`,
        `https://i1.hdslb.com/`,
        `https://i2.hdslb.com/`,
        `https://s1.hdslb.com/`,
        `https://s2.hdslb.com`,
        `https://s3.hdslb.com/`,
    ]
    for (var i in 站点镜像源) {
        站点镜像源[i] += path
    }
    return 并发请求(站点镜像源)
}