Created
August 3, 2016 21:13
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| package main | |
| import ( | |
| "fmt" | |
| "log" | |
| "net/http" | |
| ) | |
| /** | |
| * This is a production-ready, horizontally shardable, super fast HTTPS-redirector. | |
| * | |
| * It takes the URL and redirects you to HTTPS where you would run your real service. | |
| * This can work on a single port for any number of hosts so long as they aren't old browsers. | |
| */ | |
| func main() { | |
| log.Fatal(http.ListenAndServe(":80", http.HandlerFunc(handler))) | |
| } | |
| func handler(w http.ResponseWriter, req *http.Request) { | |
| host := req.Header.Get("Host") | |
| if host == "" { | |
| w.WriteHeader(http.StatusBadRequest) | |
| fmt.Fprintf(w, "Sorry, you did not send a Host header. Either you're a browser before 1996 or you're testing me with telnet. add https yourself.") | |
| return | |
| } | |
| target := "https://" + host + req.RequestURI | |
| w.Header.Set("Location", target) | |
| w.WriteHeader(http.StatusMovedPermanently) | |
| fmt.Fprintf(w, "Moved to %s", target) | |
| } |
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