From 1c9ea0113d007d57bb8f793ebe7a64a3dcad7bc7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?K=C3=A9vin=20Dunglas?= <kevin@dunglas.fr>
Date: Thu, 27 Apr 2023 01:44:01 +0200
Subject: caddyhttp: Impl `ResponseWriter.Unwrap()`, prep for Go 1.20's
 `ResponseController` (#5509)

* feat: add support for ResponseWriter.Unwrap()

* cherry-pick Francis' code
---
 modules/caddyhttp/responsewriter.go | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'modules/caddyhttp/responsewriter.go')

diff --git a/modules/caddyhttp/responsewriter.go b/modules/caddyhttp/responsewriter.go
index 1b28cf0..398bd15 100644
--- a/modules/caddyhttp/responsewriter.go
+++ b/modules/caddyhttp/responsewriter.go
@@ -72,6 +72,11 @@ func (rww *ResponseWriterWrapper) ReadFrom(r io.Reader) (n int64, err error) {
 	return io.Copy(rww.ResponseWriter, r)
 }
 
+// Unwrap returns the underlying ResponseWriter.
+func (rww *ResponseWriterWrapper) Unwrap() http.ResponseWriter {
+	return rww.ResponseWriter
+}
+
 // HTTPInterfaces mix all the interfaces that middleware ResponseWriters need to support.
 type HTTPInterfaces interface {
 	http.ResponseWriter
-- 
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