diff --git a/.gitignore b/.gitignore
index d298be1..0b76538 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-public/
\ No newline at end of file
+public/
+front/
\ No newline at end of file
diff --git a/containers/devicemanagera/constants/constants.go b/containers/devicemanagera/constants/constants.go
new file mode 100644
index 0000000..d87249c
--- /dev/null
+++ b/containers/devicemanagera/constants/constants.go
@@ -0,0 +1,32 @@
+package constants
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"strings"
+)
+
+func getIP() string {
+	host, _ := os.Hostname()
+	addrs, _ := net.LookupIP(host)
+
+	return addrs[0].String()
+}
+
+var ServerAddr string
+var MyIP string
+
+func init() {
+	var exist bool
+	ServerAddr, exist = os.LookupEnv("SERVER_ADDR")
+	if !exist {
+		fmt.Println("Please set SERVER_ADDR as environment variable")
+	}
+
+	MyIP = getIP()
+	idx := strings.LastIndex(MyIP, ".")
+	ServerAddr = MyIP[:idx+1] + "1"
+	fmt.Println(ServerAddr)
+
+}
diff --git a/containers/devicemanagera/go.mod b/containers/devicemanagera/go.mod
index f4d8c95..1099b6f 100644
--- a/containers/devicemanagera/go.mod
+++ b/containers/devicemanagera/go.mod
@@ -1,3 +1,8 @@
-module devicemanagera
+module devicemanagerb
 
 go 1.17
+
+require (
+	github.com/gorilla/mux v1.7.4
+	github.com/urfave/negroni v1.0.0
+)
diff --git a/containers/devicemanagera/go.sum b/containers/devicemanagera/go.sum
new file mode 100644
index 0000000..1947147
--- /dev/null
+++ b/containers/devicemanagera/go.sum
@@ -0,0 +1,4 @@
+github.com/gorilla/mux v1.7.4 h1:VuZ8uybHlWmqV03+zRzdwKL4tUnIp1MAQtp1mIFE1bc=
+github.com/gorilla/mux v1.7.4/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
+github.com/urfave/negroni v1.0.0 h1:kIimOitoypq34K7TG7DUaJ9kq/N4Ofuwi1sjz0KipXc=
+github.com/urfave/negroni v1.0.0/go.mod h1:Meg73S6kFm/4PpbYdq35yYWoCZ9mS/YSx+lKnmiohz4=
diff --git a/containers/devicemanagera/main.go b/containers/devicemanagera/main.go
index aaeddab..7c6ac3e 100644
--- a/containers/devicemanagera/main.go
+++ b/containers/devicemanagera/main.go
@@ -2,50 +2,30 @@ package main
 
 import (
 	"bytes"
-	"devicemanagera/router"
+	"devicemanagerb/constants"
+	"devicemanagerb/router"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
-	"net"
 	"net/http"
-	"os"
-	"strings"
 )
 
-var server_addr string
-
-func getIP() string {
-	host, _ := os.Hostname()
-	addrs, _ := net.LookupIP(host)
-
-	return addrs[0].String()
-}
-
 func registerToServer() {
-	var exist bool
-	server_addr, exist = os.LookupEnv("SERVER_ADDR")
-	if !exist {
-		fmt.Println("Please set SERVER_ADDR as environment variable")
-	}
-
-	ip := getIP()
-	idx := strings.LastIndex(ip, ".")
-	serverAddr := ip[:idx+1] + "1"
-	fmt.Println(serverAddr)
 
 	var obj map[string]string = make(map[string]string)
-	obj["name"] = "devicemanagera"
-	obj["addr"] = getIP() + ":3000"
+	obj["name"] = "devicemanagerb"
+	obj["addr"] = constants.MyIP + ":3000"
 
 	b, err := json.Marshal(obj)
 	if err != nil {
 		panic(err)
 	}
 
-	req, err := http.NewRequest("PUT", "http://"+serverAddr+":3000/services", bytes.NewBuffer(b))
+	req, err := http.NewRequest("PUT", "http://"+constants.ServerAddr+":3000/services", bytes.NewBuffer(b))
 	if err != nil {
 		panic(err)
 	}
+
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		panic(err)
@@ -56,7 +36,6 @@ func registerToServer() {
 		panic(err)
 	}
 	fmt.Println(string(b))
-	// http.Post("")
 }
 
 func main() {
diff --git a/containers/devicemanagera/router/route.go b/containers/devicemanagera/router/route.go
index 6750683..df0c076 100644
--- a/containers/devicemanagera/router/route.go
+++ b/containers/devicemanagera/router/route.go
@@ -1,15 +1,150 @@
 package router
 
 import (
+	"bytes"
+	"devicemanagerb/constants"
+	"encoding/json"
+	"io/ioutil"
+	"log"
 	"net/http"
+
+	"github.com/gorilla/mux"
+	"github.com/urfave/negroni"
 )
 
 func NewRouter() http.Handler {
-	mux := http.NewServeMux()
-	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		w.Write([]byte("I am devicemanagerA"))
-	})
+	mux := mux.NewRouter()
+	// mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+	// 	w.WriteHeader(http.StatusOK)
+	// 	w.Write([]byte("I am devicemanagerB"))
+	// })
 
-	return mux
+	mux.HandleFunc("/{id}", PutStatusChangedHandle).Methods("PUT")
+	mux.HandleFunc("/{id}", PostStatusChangedHandle).Methods("POST")
+	mux.HandleFunc("/{id}", GetStatusHandle).Methods("GET")
+
+	n := negroni.Classic()
+	n.UseHandler(mux)
+	return n
 }
+
+// sensing data per device
+var s_data = map[string]interface{}{}
+
+// status from sensor
+func PutStatusChangedHandle(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+
+	b, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	status := map[string]interface{}{}
+	err = json.Unmarshal(b, &status)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	did, ok := vars["id"]
+	if !ok {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	s_data[did] = status
+	log.Println(s_data)
+
+	cdata, ok := c_data[did]
+	if !ok {
+		w.Write([]byte("I am devicemanagerB"))
+	} else {
+		encoder := json.NewEncoder(w)
+		err := encoder.Encode(cdata)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			w.Write([]byte(err.Error()))
+			return
+		}
+	}
+
+	req, err := http.NewRequest("PUT", "http://"+constants.ServerAddr+":3000/device/"+did, bytes.NewReader(b))
+	if err != nil {
+		return
+	}
+
+	_, err = http.DefaultClient.Do(req)
+	if err != nil {
+		panic(err)
+	}
+
+}
+
+var c_data = map[string]interface{}{}
+
+func GetStatusHandle(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	did, ok := vars["id"]
+	if !ok {
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	status, ok := c_data[did]
+	if !ok {
+		status = map[string]interface{}{
+			"servo": 0,
+			"fan":   0,
+			"light": 0,
+		}
+	}
+
+	encoder := json.NewEncoder(w)
+
+	err := encoder.Encode(status)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
+}
+
+func PostStatusChangedHandle(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+
+	b, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	status := map[string]interface{}{}
+	err = json.Unmarshal(b, &status)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	did, ok := vars["id"]
+	if !ok {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	c_data[did] = status
+	log.Println(c_data)
+
+	w.WriteHeader(http.StatusOK)
+}
+
+// status from user per device
diff --git a/model/device.go b/model/device.go
index b7eb18e..1dc3be0 100644
--- a/model/device.go
+++ b/model/device.go
@@ -52,16 +52,15 @@ func (s *dbHandler) QueryDevice(dname string) (*Device, error) {
 
 	return &device, nil
 }
-func (s *dbHandler) DeleteDevice(device *Device) error {
 
+func (s *dbHandler) DeleteDevice(device *Device) error {
 	tx := s.db.Delete(device)
 	if tx.Error != nil {
 		return tx.Error
 	}
 
-	tx.First(device, "did=?", device.DID)
+	// tx.First(device, "did=?", device.DID)
 	return nil
-
 }
 
 func (s *dbHandler) IsExistDevice(dname string) bool {
diff --git a/router/devices.go b/router/devices.go
index 3c03401..6b4f203 100644
--- a/router/devices.go
+++ b/router/devices.go
@@ -86,7 +86,6 @@ func PostDevice(w http.ResponseWriter, r *http.Request) {
 
 	select {
 	case <-r.Context().Done():
-		fmt.Println("^^")
 		mutex.Lock()
 		defer mutex.Unlock()
 		delete(waitPermission, device.DID)
@@ -104,7 +103,11 @@ func PostDevice(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 		w.Write([]byte("This operation is not permitted"))
 		return
-	case b := <-waitPermission[device.DID]:
+	case b, ok := <-waitPermission[device.DID]:
+		if !ok {
+			return
+		}
+
 		if b {
 			// 디바이스 등록 절차 수행
 			db.AddDevice(device)
diff --git a/router/notification.go b/router/notification.go
index 678ee99..953ed50 100644
--- a/router/notification.go
+++ b/router/notification.go
@@ -33,8 +33,8 @@ func removeNotification(noti chan *Notification) {
 	defer notiMutex.Unlock()
 	for i, e := range notifications {
 		if e == noti {
-			discoveredDevices[i] = discoveredDevices[len(discoveredDevices)-1]
-			discoveredDevices = discoveredDevices[:len(discoveredDevices)-1]
+			notifications[i] = notifications[len(notifications)-1]
+			notifications = notifications[:len(notifications)-1]
 		}
 	}
 }