Golang reverse proxy

proxy.go

package main

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

func main() {
    http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
        director := func(req *http.Request) {
            req = r
            req.URL.Scheme = "http"
            req.URL.Host = r.Host
        }
        proxy := &httputil.ReverseProxy{Director: director}
        proxy.ServeHTTP(w, r)
    })
    log.Fatal(http.ListenAndServe(":8181", nil))
}

There's no reason to create a ReverseProxy on every request. Is there?

This was helpful!!

No, there's not. All this plumbing is already part of ReverseProxy. It could be rewritten as:

func main() {
    log.Fatal(http.ListenAndServe(":8181", &httputil.ReverseProxy{
        Director: func(r *http.Request) { ... }
    }))
}

Can we reverse proxy a https connection?

👍 "Can we reverse proxy a https connection?" .. I would also like to know.

@arun0009 - yes. You would setup a custom listener with all the relevant TLS configuration. When you configure the httputil.ReverseProxy, you use an HTTP scheme and thus you're essentially doing TLS off-loading.

How can I catch 502 errors and rewrite errors? Thank you