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golang NewSingleHostReverseProxy + gorilla mux
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| package main | |
| import ( | |
| "net/http" | |
| "net/http/httputil" | |
| "net/url" | |
| "github.com/gorilla/mux" | |
| ) | |
| // package main | |
| // import ( | |
| // "net/http" | |
| // "github.com/gorilla/mux" | |
| // ) | |
| // func main() { | |
| // r := mux.NewRouter() | |
| // r.HandleFunc("/actions", func(w http.ResponseWriter, r *http.Request) { | |
| // w.Write([]byte("actions")) | |
| // w.WriteHeader(200) | |
| // }) | |
| // http.Handle("/", r) | |
| // http.ListenAndServe(":3333", r) | |
| // } | |
| // Run server above | |
| // call curl http://localhost:3222/target/actions | |
| // Url through proxy: http://localhost:3333/actions | |
| func main() { | |
| target := "http://localhost:3333" | |
| remote, err := url.Parse(target) | |
| if err != nil { | |
| panic(err) | |
| } | |
| proxy := httputil.NewSingleHostReverseProxy(remote) | |
| r := mux.NewRouter() | |
| r.HandleFunc("/target/{forward:.*}", proxyHandler(remote, proxy)) | |
| http.Handle("/", r) | |
| http.ListenAndServe(":3222", r) | |
| } | |
| func proxyHandler(url *url.URL, p *httputil.ReverseProxy) func(http.ResponseWriter, *http.Request) { | |
| return func(w http.ResponseWriter, r *http.Request) { | |
| r.URL.Host = url.Host | |
| r.URL.Scheme = url.Scheme | |
| r.Header.Set("X-Forwarded-Host", r.Header.Get("Host")) | |
| r.Host = url.Host | |
| r.URL.Path = mux.Vars(r)["forward"] | |
| p.ServeHTTP(w, r) | |
| } | |
| } |
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