回答

注册新建一个worker，代码如下：

addEventListener('fetch', event => {
event.respondWith(fetchAndApply(event.request));
})

async function fetchAndApply(request) {
if (request.method === 'OPTIONS') {
// 对于预检请求，设置允许的请求方法、请求头和响应头
return new Response(null, {
headers: {
'Access-Control-Allow-Origin': '*', // 允许的域名，可以设置具体的域名
'Access-Control-Allow-Methods': '*', // 允许的请求方法
'Access-Control-Allow-Headers': '*' // 允许的请求头，例如 Content-Type 和 Authorization
}
})
}

let response = null;
let method = request.method;
let request_headers = request.headers;



let url = new URL(request.url);
let url_hostname = url.hostname;
url.protocol = 'https:';
url.host = 'api.openai.com';



let new_request_headers = new Headers(request_headers);
new_request_headers.set('Host', url.host);
new_request_headers.set('Referer', url.protocol + '//' + url_hostname);



let original_response = await fetch(url.href, {
method: method,
headers: new_request_headers,
body: request.body
})


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('Cache-Control', 'no-store');
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');

original_text = original_response_clone.body
response = new Response(original_text, {
status,
headers: new_response_headers
})

return response

}

然后将本地的api.openai.com的地址换成cloudfare的就行了，注意需要绑定一个自己的域名，cloudflare提供的免费域名在国内无法访问。