cf worker请求转发

const proxyOrigin = 'https://www.myflv.cn'
const proxyUrl = new URL(proxyOrigin)
const proxyHost = proxyUrl.host

export default {
    async fetch(request, env, ctx) {
        const requestUrl = new URL(request.url)
        const requestOrigin = requestUrl.origin
        const proxyUrl = request.url.replace(requestOrigin, proxyOrigin)
        const proxyHeaders = new Headers(request.headers)
        proxyHeaders.set('host', proxyHost)
        
        const proxyRequest = new Request(proxyUrl, {
            method: request.method,
            headers: proxyHeaders,
            body: request.body,
            redirect: 'manual'
        })
        
        return await fetch(proxyRequest)
    }
}