Virtual Hosts in Go

vhosts.go

package main

import(
    "net/url"
    "net/http"
    "net/http/httputil"
)

func main() {
    vhost1, err := url.Parse("http://127.0.0.1:1980")
    if err != nil {
            panic(err)
    }
    proxy1 := httputil.NewSingleHostReverseProxy(vhost1)
    http.HandleFunc("publicdomain1/", handler(proxy1))
    
    vhost2, err := url.Parse("http://127.0.0.1:1981")
    if err != nil {
            panic(err)
    }
    proxy2 := httputil.NewSingleHostReverseProxy(vhost2)
    http.HandleFunc("publicdomain2/", handler(proxy2))
    
    err = http.ListenAndServe(":80", nil)
    if err != nil {
          panic(err)
    }
}

func handler(p *httputil.ReverseProxy) func(http.ResponseWriter, *http.Request) {
    return func(w http.ResponseWriter, r *http.Request) {
            p.ServeHTTP(w, r)
    }
}