From 169ab3acda6a8d5e436c91b47fba7c8719d77c2c Mon Sep 17 00:00:00 2001
From: insomniac <insomniacslk@users.noreply.github.com>
Date: Tue, 7 Nov 2017 17:08:54 +0000
Subject: [PATCH] Check for nil listener before printing address (#1946)

* Checking that a server listener is not nil before printing verbose information

* Improved readability of a loop
---
 caddy.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/caddy.go b/caddy.go
index 032d8721..8da6d4db 100644
--- a/caddy.go
+++ b/caddy.go
@@ -518,6 +518,11 @@ func startWithListenerFds(cdyfile Input, inst *Instance, restartFds map[string]r
 		}
 		if !Quiet {
 			for _, srvln := range inst.servers {
+				// only show FD notice if the listener is not nil.
+				// This can happen when only serving UDP or TCP
+				if srvln.listener == nil {
+					continue
+				}
 				if !IsLoopback(srvln.listener.Addr().String()) {
 					checkFdlimit()
 					break