From 09ba9e994e6391162fbfdfbd90c72270bdff3a49 Mon Sep 17 00:00:00 2001
From: Francis Lavoie <lavofr@gmail.com>
Date: Fri, 4 Mar 2022 22:50:05 -0500
Subject: fileserver: Add `pass_thru` Caddyfile option (#4613)

---
 .../caddyfile_adapt/file_server_pass_thru.txt      | 32 ++++++++++++++++++++++
 modules/caddyhttp/fileserver/caddyfile.go          |  6 ++++
 2 files changed, 38 insertions(+)
 create mode 100644 caddytest/integration/caddyfile_adapt/file_server_pass_thru.txt

diff --git a/caddytest/integration/caddyfile_adapt/file_server_pass_thru.txt b/caddytest/integration/caddyfile_adapt/file_server_pass_thru.txt
new file mode 100644
index 0000000..476b165
--- /dev/null
+++ b/caddytest/integration/caddyfile_adapt/file_server_pass_thru.txt
@@ -0,0 +1,32 @@
+:80
+
+file_server {
+	pass_thru
+}
+----------
+{
+	"apps": {
+		"http": {
+			"servers": {
+				"srv0": {
+					"listen": [
+						":80"
+					],
+					"routes": [
+						{
+							"handle": [
+								{
+									"handler": "file_server",
+									"hide": [
+										"./Caddyfile"
+									],
+									"pass_thru": true
+								}
+							]
+						}
+					]
+				}
+			}
+		}
+	}
+}
diff --git a/modules/caddyhttp/fileserver/caddyfile.go b/modules/caddyhttp/fileserver/caddyfile.go
index 886d667..2641535 100644
--- a/modules/caddyhttp/fileserver/caddyfile.go
+++ b/modules/caddyhttp/fileserver/caddyfile.go
@@ -120,6 +120,12 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
 				falseBool := false
 				fsrv.CanonicalURIs = &falseBool
 
+			case "pass_thru":
+				if h.NextArg() {
+					return nil, h.ArgErr()
+				}
+				fsrv.PassThru = true
+
 			default:
 				return nil, h.Errf("unknown subdirective '%s'", h.Val())
 			}
-- 
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