Cloudflare Workers 每天只有免费的 10 万次请求

反代

1.登录你的Cloudflare账户，在菜单中选择Workers 和 Pages，并点击创建应用程序。

2.点击创建Worker，自定义一个名称，点击部署。

3.进入编辑代码界面，修改worker.js中的代码为

const upstream = 'mt1.google.com'
const blocked_ip_address = ['0.0.0.0', '127.0.0.1']
const replace_dict = {
    '$upstream': '$custom_domain',
    '//mt1.google.com': ''
}
addEventListener('fetch', event =>{
    event.respondWith(fetchAndApply(event.request));
})
async function fetchAndApply(request) {
    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;
    }
    url.host = upstream;
    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);
        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, 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, host_name) {
    let text = await response.text() 
    var i, j;
    for (i in replace_dict) {
        j = replace_dict[i]
        if (i == '$upstream') {
            i = upstream
        } else if (i == '$custom_domain') {
            i = host_name
        }
        if (j == '$upstream') {
            j = upstream
        } else if (j == '$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 < agents.length; v++) { if (user_agent_info.indexOf(agents[v]) > 0) {
            flag = false;
            break;
        }
    }
    return flag;
}

点击保存并部署。

4.因为cloudflare提供的workers.dev域名被墙，所以我们还需要设置自定义域。进入你的worker，点击触发器中的添加自定义域，填写你的域名，填写完后cloudflare会给这个域名配置TLS证书。

使用

打开奥维互动地图点击自定义地图，进入自定义地图管理。点击扫描二维码，依次扫描以下的二维码

导入后把主机名换成你的域名

至此，你就能在奥维互动地图中使用谷歌图源了。

效果