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Simple reverse proxy in Go (forked to adapt to Azure functions use-case)
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| package main | |
| import ( | |
| "crypto/tls" | |
| "log" | |
| "net/http" | |
| "net/http/httputil" | |
| "net/url" | |
| "os" | |
| ) | |
| const redirectUrl = "http://10.2.0.4" | |
| type Proxy struct { | |
| target *url.URL | |
| proxy *httputil.ReverseProxy | |
| } | |
| func (p *Proxy) ServeHTTP(w http.ResponseWriter, r *http.Request) { | |
| log.Println(r.URL) | |
| r.Host = p.target.Host | |
| // w.Header().Set("X-Ben", "radi") | |
| p.proxy.ServeHTTP(w, r) | |
| } | |
| func main() { | |
| // Replace 'target' with the URL of the server you want to proxy to | |
| target, err := url.Parse(redirectUrl) | |
| if err != nil { | |
| panic(err) | |
| } | |
| // Create a new ReverseProxy instance | |
| proxy := httputil.NewSingleHostReverseProxy(target) | |
| // Configure the reverse proxy to use HTTPS | |
| proxy.Transport = &http.Transport{ | |
| TLSClientConfig: &tls.Config{InsecureSkipVerify: true}, | |
| } | |
| // Create a new Proxy instance | |
| p := &Proxy{target: target, proxy: proxy} | |
| // Start the HTTP server and register the Proxy instance as the handler | |
| listenAddr := ":8080" | |
| if val, ok := os.LookupEnv("FUNCTIONS_CUSTOMHANDLER_PORT"); ok { | |
| listenAddr = ":" + val | |
| } | |
| err = http.ListenAndServe(listenAddr, p) | |
| if err != nil { | |
| panic(err) | |
| } | |
| } |
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