From 3d02439b9a85a7f539861318514e6c3a6afddd34 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Igor=20Ani=C4=87?= <ianic@minus5.hr>
Date: Fri, 12 Apr 2019 17:51:53 +0200
Subject: [PATCH] fix exit status code (#637)

Fabio always returned status code 1. Event on clean exit.
Shutdown of http server is treated as fatal:
 [FATAL] http: Server closed
 [FATAL] ui: http: Server closed

Http server Serve method always returns non nil error:
https://golang.org/pkg/net/http/#Server.Serve

ErrServerClosed should be treated as clean exit.
"After Shutdown or Close, the returned error is ErrServerClosed."
---
 proxy/serve.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/proxy/serve.go b/proxy/serve.go
index cbe179615..cdb90cbe4 100644
--- a/proxy/serve.go
+++ b/proxy/serve.go
@@ -103,5 +103,8 @@ func serve(ln net.Listener, srv Server) error {
 	mu.Lock()
 	servers = append(servers, srv)
 	mu.Unlock()
-	return srv.Serve(ln)
+	if err := srv.Serve(ln); err != http.ErrServerClosed {
+		return err
+	}
+	return nil
 }