iris.TLS starts a secondary http redirection server now (like AutoTLS did) and add 'iris.TLSNoRedirect' to disable it (on both TLS and AutoTLS)

Former-commit-id: c7a535bf860a67604de3d09ade30599611e096f1

core/host/proxy.go

@@ -84,6 +84,19 @@ func NewProxy(hostAddr string, target *url.URL) *Supervisor {
 // r := NewRedirection(":80", target, 307)
 // r.ListenAndServe() // use of `r.Shutdown` to close this server.
 func NewRedirection(hostAddr string, target *url.URL, redirectStatus int) *Supervisor {
+	redirectSrv := &http.Server{
+		ReadTimeout:  30 * time.Second,
+		WriteTimeout: 60 * time.Second,
+		Addr:         hostAddr,
+		Handler:      RedirectHandler(target, redirectStatus),
+	}
+
+	return New(redirectSrv)
+}
+
+// RedirectHandler returns a simple redirect handler.
+// See `NewProxy` or `ProxyHandler` for more features.
+func RedirectHandler(target *url.URL, redirectStatus int) http.Handler {
 	targetURI := target.String()
 	if redirectStatus <= 300 {
 		// here we should use StatusPermanentRedirect but
@@ -96,18 +109,11 @@ func NewRedirection(hostAddr string, target *url.URL, redirectStatus int) *Super
 		redirectStatus = http.StatusTemporaryRedirect
 	}
 
-	redirectSrv := &http.Server{
-		ReadTimeout:  30 * time.Second,
-		WriteTimeout: 60 * time.Second,
-		Addr:         hostAddr,
-		Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			redirectTo := singleJoiningSlash(targetURI, r.URL.Path)
-			if len(r.URL.RawQuery) > 0 {
-				redirectTo += "?" + r.URL.RawQuery
-			}
-			http.Redirect(w, r, redirectTo, redirectStatus)
-		}),
-	}
-
-	return New(redirectSrv)
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		redirectTo := singleJoiningSlash(targetURI, r.URL.Path)
+		if len(r.URL.RawQuery) > 0 {
+			redirectTo += "?" + r.URL.RawQuery
+		}
+		http.Redirect(w, r, redirectTo, redirectStatus)
+	})
 }