diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0a3d986
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,25 @@
+### Go template
+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+.idea
+_*
\ No newline at end of file
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..0a41f2b
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,18 @@
+module grace
+
+go 1.22.1
+
+require (
+	github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c
+	github.com/facebookgo/freeport v0.0.0-20150612182905-d4adf43b75b9
+	github.com/facebookgo/grace v0.0.0-20180706040059-75cf19382434
+	github.com/facebookgo/httpdown v0.0.0-20180706035922-5979d39b15c2
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/facebookgo/clock v0.0.0-20150410010913-600d898af40a // indirect
+	github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 // indirect
+	github.com/facebookgo/stats v0.0.0-20151006221625-1b76add642e4 // indirect
+	github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..2e9eb5b
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,18 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/facebookgo/clock v0.0.0-20150410010913-600d898af40a h1:yDWHCSQ40h88yih2JAcL6Ls/kVkSE8GFACTGVnMPruw=
+github.com/facebookgo/clock v0.0.0-20150410010913-600d898af40a/go.mod h1:7Ga40egUymuWXxAe151lTNnCv97MddSOVsjpPPkityA=
+github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c h1:8ISkoahWXwZR41ois5lSJBSVw4D0OV19Ht/JSTzvSv0=
+github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c/go.mod h1:Yg+htXGokKKdzcwhuNDwVvN+uBxDGXJ7G/VN1d8fa64=
+github.com/facebookgo/freeport v0.0.0-20150612182905-d4adf43b75b9 h1:wWke/RUCl7VRjQhwPlR/v0glZXNYzBHdNUzf/Am2Nmg=
+github.com/facebookgo/freeport v0.0.0-20150612182905-d4adf43b75b9/go.mod h1:uPmAp6Sws4L7+Q/OokbWDAK1ibXYhB3PXFP1kol5hPg=
+github.com/facebookgo/grace v0.0.0-20180706040059-75cf19382434 h1:mOp33BLbcbJ8fvTAmZacbBiOASfxN+MLcLxymZCIrGE=
+github.com/facebookgo/grace v0.0.0-20180706040059-75cf19382434/go.mod h1:KigFdumBXUPSwzLDbeuzyt0elrL7+CP7TKuhrhT4bcU=
+github.com/facebookgo/httpdown v0.0.0-20180706035922-5979d39b15c2 h1:nXeeRHmgNgjLxi+7dY9l9aDvSS1uwVlNLqUWIY4Ath0=
+github.com/facebookgo/httpdown v0.0.0-20180706035922-5979d39b15c2/go.mod h1:TUV/fX3XrTtBQb5+ttSUJzcFgLNpILONFTKmBuk5RSw=
+github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 h1:JWuenKqqX8nojtoVVWjGfOF9635RETekkoH6Cc9SX0A=
+github.com/facebookgo/stack v0.0.0-20160209184415-751773369052/go.mod h1:UbMTZqLaRiH3MsBH8va0n7s1pQYcu3uTb8G4tygF4Zg=
+github.com/facebookgo/stats v0.0.0-20151006221625-1b76add642e4 h1:0YtRCqIZs2+Tz49QuH6cJVw/IFqzo39gEqZ0iYLxD2M=
+github.com/facebookgo/stats v0.0.0-20151006221625-1b76add642e4/go.mod h1:vsJz7uE339KUCpBXx3JAJzSRH7Uk4iGGyJzR529qDIA=
+github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4 h1:7HZCaLC5+BZpmbhCOZJ293Lz68O7PYrF2EzeiFMwCLk=
+github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4/go.mod h1:5tD+neXqOorC30/tWg0LCSkrqj/AR6gu8yY8/fpw1q0=
diff --git a/gracedemo/demo.go b/gracedemo/demo.go
index 842d880..c4c43b9 100644
--- a/gracedemo/demo.go
+++ b/gracedemo/demo.go
@@ -5,11 +5,14 @@ package main
 import (
 	"flag"
 	"fmt"
+	"grace/gracedemo/manifest"
+	"log"
 	"net/http"
 	"os"
+	"strconv"
 	"time"
 
-	"github.com/facebookgo/grace/gracehttp"
+	"grace/gracehttp"
 )
 
 var (
@@ -21,16 +24,47 @@ var (
 
 func main() {
 	flag.Parse()
-	gracehttp.Serve(
+	gracehttp.SetLogger(log.Default())
+	_ = os.WriteFile("./_pid", []byte(strconv.Itoa(os.Getpid())), os.ModePerm)
+	log.Println("server start:", os.Getppid(), os.Getpid(), getManifest())
+	err := gracehttp.Serve(
 		&http.Server{Addr: *address0, Handler: newHandler("Zero  ")},
-		&http.Server{Addr: *address1, Handler: newHandler("First ")},
-		&http.Server{Addr: *address2, Handler: newHandler("Second")},
+		//&http.Server{Addr: *address1, Handler: newHandler("First ")},
+		//&http.Server{Addr: *address2, Handler: newHandler("Second")},
 	)
+
+	if err != nil {
+		log.Println(err)
+	}
+	log.Println("server shutdown:", os.Getppid(), os.Getpid(), getManifest())
+}
+
+func getManifest() string {
+	return fmt.Sprintf("Version: %s Branch: %s Commit: %s Static:%s", manifest.Version, manifest.Branch, manifest.Commit, manifest.Static)
 }
 
 func newHandler(name string) http.Handler {
 	mux := http.NewServeMux()
 	mux.HandleFunc("/sleep/", func(w http.ResponseWriter, r *http.Request) {
+		duration, err := time.ParseDuration(r.FormValue("duration"))
+		//log.Println(r.URL)
+		if err != nil {
+			http.Error(w, err.Error(), 400)
+			return
+		}
+		time.Sleep(duration)
+		fmt.Fprintf(
+			w,
+			"+ %s started at %s slept for %d nanoseconds from pid %d. %s\n",
+			name,
+			now,
+			duration.Nanoseconds(),
+			os.Getpid(),
+			getManifest(),
+		)
+	})
+	//syscall.SetsockoptInt()
+	mux.HandleFunc("/restart", func(w http.ResponseWriter, r *http.Request) {
 		duration, err := time.ParseDuration(r.FormValue("duration"))
 		if err != nil {
 			http.Error(w, err.Error(), 400)
@@ -39,12 +73,13 @@ func newHandler(name string) http.Handler {
 		time.Sleep(duration)
 		fmt.Fprintf(
 			w,
-			"%s started at %s slept for %d nanoseconds from pid %d.\n",
+			"+ %s started at %s slept for %d nanoseconds from pid %d.\n",
 			name,
 			now,
 			duration.Nanoseconds(),
 			os.Getpid(),
 		)
 	})
+
 	return mux
 }
diff --git a/gracedemo/dev.sh b/gracedemo/dev.sh
new file mode 100755
index 0000000..4bbec0d
--- /dev/null
+++ b/gracedemo/dev.sh
@@ -0,0 +1,28 @@
+set -xe
+PROG=t.out
+
+
+if which git >/dev/null 2>&1; then
+  if git rev-parse --is-inside-work-tree > /dev/null 2>&1; then
+    # 获取最新的 commit ID
+    commit=$(git rev-parse --short=8 HEAD)
+
+    # 获取当前分支名
+    branch=$(git rev-parse --abbrev-ref HEAD)
+
+    version=$(git describe --tags --always | sed 's/-/+/' | sed 's/^v//')
+
+    static=`date +%Y%m%d_%H:%M:%S%z`
+    echo "build git repo info version: $version branch: $branch commit: $commit static: $static"
+  fi
+fi
+
+
+
+
+go build \
+  -ldflags "-X grace/gracedemo/manifest.Version=$version -X grace/gracedemo/manifest.Commit=$commit -X grace/gracedemo/manifest.Branch=$branch -X grace/gracedemo/manifest.Static=$static" \
+  -o ${PROG}
+
+#nohup ./${PROG} app.json 2>&1 &
+./${PROG} > nohup.out
\ No newline at end of file
diff --git a/gracedemo/hot.sh b/gracedemo/hot.sh
new file mode 100755
index 0000000..984c5aa
--- /dev/null
+++ b/gracedemo/hot.sh
@@ -0,0 +1,27 @@
+set -xe
+PROG=t.out
+
+
+if which git >/dev/null 2>&1; then
+  if git rev-parse --is-inside-work-tree > /dev/null 2>&1; then
+    # 获取最新的 commit ID
+    commit=$(git rev-parse --short=8 HEAD)
+
+    # 获取当前分支名
+    branch=$(git rev-parse --abbrev-ref HEAD)
+
+    version=$(git describe --tags --always | sed 's/-/+/' | sed 's/^v//')
+
+    static=`date +%Y%m%d_%H:%M:%S%z`
+    echo "build git repo info version: $version branch: $branch commit: $commit static: $static"
+  fi
+fi
+
+
+
+
+go build \
+  -ldflags "-X grace/gracedemo/manifest.Version=$version -X grace/gracedemo/manifest.Commit=$commit -X grace/gracedemo/manifest.Branch=$branch -X grace/gracedemo/manifest.Static=$static" \
+  -o ${PROG}
+
+kill -HUG $(cat ./_pid)
\ No newline at end of file
diff --git a/gracedemo/manifest/version.go b/gracedemo/manifest/version.go
new file mode 100644
index 0000000..67ecadb
--- /dev/null
+++ b/gracedemo/manifest/version.go
@@ -0,0 +1,14 @@
+package manifest
+
+import "fmt"
+
+var (
+	Branch  = ""
+	Commit  = ""
+	Version = "development"
+	Static  = ""
+)
+
+func init() {
+	fmt.Printf("[AppInfo][Init] Version: %s Branch: %s Commit: %s Static:%s\n", Version, Branch, Commit, Static)
+}
diff --git a/gracehttp/http.go b/gracehttp/http.go
index eefe340..950e20d 100644
--- a/gracehttp/http.go
+++ b/gracehttp/http.go
@@ -149,7 +149,7 @@ func (a *app) run() error {
 	// Start serving.
 	a.serve()
 
-	// Close the parent if we inherited and it wasn't init that started us.
+	//Close the parent if we inherited and it wasn't init that started us.
 	if didInherit && ppid != 1 {
 		if err := syscall.Kill(ppid, syscall.SIGTERM); err != nil {
 			return fmt.Errorf("failed to close parent: %s", err)
diff --git a/gracehttp/testbin_test.go b/gracehttp/testbin_test.go
index 4fa7dbd..ca207f8 100644
--- a/gracehttp/testbin_test.go
+++ b/gracehttp/testbin_test.go
@@ -13,7 +13,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/facebookgo/grace/gracehttp"
+	"grace/gracehttp"
 )
 
 const preStartProcessEnv = "GRACEHTTP_PRE_START_PROCESS"