diff --git a/mss.py b/mss.py
new file mode 100644
index 0000000..d58de4d
--- /dev/null
+++ b/mss.py
@@ -0,0 +1,63 @@
+import time
+import threading
+from paho.mqtt import client as mqtt_client
+
+
+broker = 'broker.emqx.io'
+port = 1883
+
+pubtop = "/boxchat/tu"
+subtop = "/boxchat/tuan"
+
+
+client_id = f'python-mqtt-{10}' #connect to broker
+username = 'emqx'
+password = 'public'
+
+# connect client to broker
+def on_connect(client, userdata, flags, rc): #call to connect function
+    if rc == 0:
+        print("Connected to MQTT Broker!")
+        client.subscribe(subtop)
+        
+    else:
+        print("Failed to connect, return code %d\n", rc)
+
+###########################
+
+# message control
+
+def on_message(client, userdata, msg):  
+    global chat
+    if str(msg.topic) != pubtop:  
+        chat = str(msg.payload.decode("utf-8"))
+        print("\nCustom :", chat)
+       
+def publish(client):
+    global msg
+    while True:
+        msg = input("You :")
+        if msg == 'stop' or msg == 'Stop':
+            client.disconnect()
+            print("Disconnected....")
+            break
+        else: 
+            client.publish(pubtop,msg,0, retain=False)      
+            
+def on_disconnect(client, userdata, rc):
+
+    if rc != 0:
+        print("Unexpected disconnection.")
+        client.disconnect()
+
+client = mqtt_client.Client(client_id, clean_session = False,userdata=None)
+client.username_pw_set(username, password)
+client.on_connect = on_connect
+client.on_message = on_message
+client.connect(broker,port)
+
+time.sleep(1)
+thread1 =threading.Thread(target=publish,args=(client,))
+thread1.start()
+
+client.loop_forever()
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