From 3c9806ccb63e66bdcac8e1ed4520c9d135cb011d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kiss=20K=C3=A1roly?= <kiss.karoly@rackhost.hu>
Date: Tue, 14 Jun 2022 15:42:33 +0200
Subject: [PATCH] Solve issue when dynamic upstreams use wrong protocol
 upstream.

---
 modules/caddyhttp/reverseproxy/httptransport.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/caddyhttp/reverseproxy/httptransport.go b/modules/caddyhttp/reverseproxy/httptransport.go
index a373f9091..96442c4e1 100644
--- a/modules/caddyhttp/reverseproxy/httptransport.go
+++ b/modules/caddyhttp/reverseproxy/httptransport.go
@@ -298,7 +298,7 @@ func (h *HTTPTransport) RoundTrip(req *http.Request) (*http.Response, error) {
 func (h *HTTPTransport) SetScheme(req *http.Request) {
 	if req.URL.Scheme == "" {
 		req.URL.Scheme = "http"
-		if h.TLS != nil {
+		if h.TLS != nil && req.URL.Port() != "80" {
 			req.URL.Scheme = "https"
 		}
 	}