From e295c3c7c3f0bec6ed782d77cc55a49b5c31b4ec Mon Sep 17 00:00:00 2001
From: nuczzz <nuc_zzz@163.com>
Date: Fri, 18 Jan 2019 19:50:22 +0800
Subject: [PATCH] add shutdown log

---
 grace/server.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/grace/server.go b/grace/server.go
index ac3eefa7..e5302baa 100644
--- a/grace/server.go
+++ b/grace/server.go
@@ -39,9 +39,11 @@ func (srv *Server) Serve() (err error) {
 	// immediately return ErrServerClosed. Make sure the program doesn't exit
 	// and waits instead for Shutdown to return.
 	if err = srv.Server.Serve(srv.ln); err != nil && err != http.ErrServerClosed {
+		log.Println(syscall.Getpid(), "Server.Serve() error:", err)
 		return err
 	}
 
+	log.Println(syscall.Getpid(), srv.ln.Addr(), "Listener closed.")
 	// wait for Shutdown to return
 	return <-srv.terminalChan
 }