From 9f16ac84a0e80fcfe3ade8f3a9b2b06ffccaea50 Mon Sep 17 00:00:00 2001
From: ericdreeves <ericdreeves@users.noreply.github.com>
Date: Sat, 3 Dec 2016 16:31:29 -0600
Subject: [PATCH] Return HTTP 504 when FastCGI connect times out.

---
 caddyhttp/fastcgi/fastcgi.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/caddyhttp/fastcgi/fastcgi.go b/caddyhttp/fastcgi/fastcgi.go
index ac29eb739..c4dd9b32c 100644
--- a/caddyhttp/fastcgi/fastcgi.go
+++ b/caddyhttp/fastcgi/fastcgi.go
@@ -81,6 +81,9 @@ func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error)
 			// Connect to FastCGI gateway
 			fcgiBackend, err := rule.dialer.Dial()
 			if err != nil {
+				if err, ok := err.(net.Error); ok && err.Timeout() {
+					return http.StatusGatewayTimeout, err
+				}
 				return http.StatusBadGateway, err
 			}
 			defer fcgiBackend.Close()