reverseProxy.ts

import "stdlib/native"

export function main() {
    let url = http.parseURL("http://example.com/")
    let proxy = httputil.newSingleHostReverseProxy(url)

    let server = http.newServer()
    server.address = ":9999"
    server.handler = (w, r) => {
        r.url.host = url.host
        r.url.scheme = url.scheme
        r.host = url.host
        proxy.serveHTTP(w, r)
    }

    server.start()
}