cf反代跳出cf加速域名

dachun

aDomain.com通过cfworkers反代 bDomain.com，当我访问aDomain.com首页是正常的，但是点击网页的内容就跳出了aDomain.com到 bDomain.com
即:无法访问此网站，bDomain.com 的响应时间过长。

突发奇想头一回搞这个，求mjj指点一下


[ol]

// 替换成你想镜像的站点

const upstream = 'www.google.com'

// 如果那个站点有专门的移动适配站点，否则保持和上面一致

const upstream_mobile = 'www.google.com'

// 你希望禁止哪些国家访问

const blocked_region = ['RU']

// 禁止自访问

const blocked_ip_address = ['0.0.0.0', '127.0.0.1']

// 替换成你想镜像的站点

const replace_dict = {

    '$upstream': '$custom_domain',

    '//www.google.com': ''

}

//以下内容都不用动

addEventListener('fetch', event => {

    event.respondWith(fetchAndApply(event.request));

})

async function fetchAndApply(request) {

    const region = request.headers.get('cf-ipcountry').toUpperCase();

    const ip_address = request.headers.get('cf-connecting-ip');

    const user_agent = request.headers.get('user-agent');

    let response = null;

    let url = new URL(request.url);

    let url_host = url.host;

    if (url.protocol == 'http:') {

        url.protocol = 'https:'

        response = Response.redirect(url.href);

        return response;

    }

    if (await device_status(user_agent)) {

        upstream_domain = upstream

    } else {

        upstream_domain = upstream_mobile

    }

    url.host = upstream_domain;

    if (blocked_region.includes(region)) {

        response = new Response('Access denied: WorkersProxy is not available in your region yet.', {

            status: 403

        });

    } else if(blocked_ip_address.includes(ip_address)){

        response = new Response('Access denied: Your IP address is blocked by WorkersProxy.', {

            status: 403

        });

    } else{

        let method = request.method;

        let request_headers = request.headers;

        let new_request_headers = new Headers(request_headers);

        new_request_headers.set('Host', upstream_domain);

        new_request_headers.set('Referer', url.href);

        let original_response = await fetch(url.href, {

            method: method,

            headers: new_request_headers

        })

        let original_response_clone = original_response.clone();

        let original_text = null;

        let response_headers = original_response.headers;

        let new_response_headers = new Headers(response_headers);

        let status = original_response.status;

        new_response_headers.set('access-control-allow-origin', '*');

        new_response_headers.set('access-control-allow-credentials', true);

        new_response_headers.delete('content-security-policy');

        new_response_headers.delete('content-security-policy-report-only');

        new_response_headers.delete('clear-site-data');

        const content_type = new_response_headers.get('content-type');

        if (content_type.includes('text/html') && content_type.includes('UTF-8')) {

            original_text = await replace_response_text(original_response_clone, upstream_domain, url_host);

        } else {

            original_text = original_response_clone.body

        }

        response = new Response(original_text, {

            status,

            headers: new_response_headers

        })

    }

    return response;

}

async function replace_response_text(response, upstream_domain, host_name) {

    let text = await response.text()

    var i, j;

    for (i in replace_dict) {

        j = replace_dict

        if (i == '$upstream') {

            i = upstream_domain

        } else if (i == '$custom_domain') {

            i = host_name

        }

        if (j == '$upstream') {

            j = upstream_domain

        } else if (j == '$custom_domain') {

            j = host_name

        }

        let re = new RegExp(i, 'g')

        text = text.replace(re, j);

    }

    return text;

}

async function device_status (user_agent_info) {

    var agents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"];

    var flag = true;

    for (var v = 0; v  0) {

            flag = false;

            break;

        }

    }

    return flag;

}[/ol]复制代码