From b6fe5d4b41d07e70a502ed58d40e8b0e75067db5 Mon Sep 17 00:00:00 2001
From: Corin Langosch <info@corinlangosch.com>
Date: Fri, 31 Mar 2023 23:44:53 +0200
Subject: proxyprotocol: Add PROXY protocol support to `reverse_proxy`, add
 HTTP listener wrapper (#5424)

Co-authored-by: WeidiDeng <weidi_deng@icloud.com>
Co-authored-by: Francis Lavoie <lavofr@gmail.com>
---
 modules/caddyhttp/reverseproxy/caddyfile.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'modules/caddyhttp/reverseproxy/caddyfile.go')

diff --git a/modules/caddyhttp/reverseproxy/caddyfile.go b/modules/caddyhttp/reverseproxy/caddyfile.go
index cf84ba7..fab3099 100644
--- a/modules/caddyhttp/reverseproxy/caddyfile.go
+++ b/modules/caddyhttp/reverseproxy/caddyfile.go
@@ -918,6 +918,17 @@ func (h *HTTPTransport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 				}
 				h.MaxResponseHeaderSize = int64(size)
 
+			case "proxy_protocol":
+				if !d.NextArg() {
+					return d.ArgErr()
+				}
+				switch proxyProtocol := d.Val(); proxyProtocol {
+				case "v1", "v2":
+					h.ProxyProtocol = proxyProtocol
+				default:
+					return d.Errf("invalid proxy protocol version '%s'", proxyProtocol)
+				}
+
 			case "dial_timeout":
 				if !d.NextArg() {
 					return d.ArgErr()
-- 
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