diff --git a/settings.toml b/settings.toml
index 5c837ab..5feb088 100644
--- a/settings.toml
+++ b/settings.toml
@@ -1,3 +1,3 @@
-MQTT_HOST = '10.10.10.8'
+MQTT_HOST = '127.0.0.1'
 MQTT_USERNAME = 'longan'
 MQTT_PASSWORD = 'longan'
\ No newline at end of file
diff --git a/thingtalk/app.py b/thingtalk/app.py
index 1d6433e..89d4e14 100644
--- a/thingtalk/app.py
+++ b/thingtalk/app.py
@@ -5,8 +5,8 @@
 from zeroconf import Zeroconf, ServiceInfo
 from functools import partial
 
-from config import settings
-from .routers.mqtt import ThingMqtt
+
+from .routers.mqtt import mqtt
 from .utils import get_ip
 from .models.thing import Server
 from .models.containers import MultipleThings
@@ -22,7 +22,8 @@
 )
 server = Server()
 server.href_prefix = f"/things/{server.id}"
-app.state.things = MultipleThings({server.id: server}, "things")
+# app.state.things = MultipleThings({server.id: server}, "things")
+app.state.things = MultipleThings({}, "things")
 
 zeroconf = Zeroconf()
 
@@ -54,18 +55,13 @@ async def stop_mdns():
     zeroconf.close()
 
 
-username = settings.MQTT_USERNAME
-password = settings.MQTT_PASSWORD
-host = settings.MQTT_HOST
-
-mqtt = ThingMqtt(host, "1883", username=username, password=password)
-
-
 @app.on_event("startup")
 async def startup():
-    logger.debug(app.state.mode)
+    app.state.mode = "gateway"
     await mqtt.connect()
-    await mqtt.publish("thingtalk/test", "online")
+    await mqtt.set_app(app)
+    await mqtt.publish("thingtalk/bridge/state", "online")
+    await app.state.things.add_thing(server)
 
 
 @app.on_event("shutdown")
diff --git a/thingtalk/models/containers.py b/thingtalk/models/containers.py
index 0dd9e93..e379159 100644
--- a/thingtalk/models/containers.py
+++ b/thingtalk/models/containers.py
@@ -1,5 +1,6 @@
 from .event import ThingPairedEvent, ThingRemovedEvent
 from .thing import Thing
+from ..routers.mqtt import mqtt
 
 
 class SingleThing:
@@ -24,6 +25,9 @@ def get_name(self):
         """Get the mDNS server name."""
         return self.thing.title
 
+    async def add_thing(self, thing: Thing):
+        await mqtt.publish(f"things/{thing.id}/config", thing.as_thing_description())
+
 
 class MultipleThings:
     """A container for multiple things."""
@@ -56,6 +60,8 @@ def get_name(self):
     async def add_thing(self, thing: Thing):
         self.things.update({thing.id: thing})
         await thing.subscribe_broadcast()
+        things = [thing.as_thing_description() for _, thing in self.get_things()]
+        await mqtt.publish(f"thingtalk/things", things)
 
         # await self.server.add_event(ThingPairedEvent({
         #     '@type': list(thing._type),
diff --git a/thingtalk/models/thing.py b/thingtalk/models/thing.py
index a7d4d18..8ba7a9b 100644
--- a/thingtalk/models/thing.py
+++ b/thingtalk/models/thing.py
@@ -167,6 +167,8 @@ def as_thing_description(self):
         if self._type:
             thing["@type"] = list(self._type)
 
+        thing["href"] = self.href
+
         return thing
 
     @property
diff --git a/thingtalk/routers/mqtt.py b/thingtalk/routers/mqtt.py
index 0386d3f..3041669 100644
--- a/thingtalk/routers/mqtt.py
+++ b/thingtalk/routers/mqtt.py
@@ -1,6 +1,7 @@
 import gmqtt
 
 from loguru import logger
+from config import settings
 from ..toolkits.mqtt import Mqtt, Client
 
 
@@ -14,6 +15,15 @@ def on_connect(self, client: Client, flags, rc, properties):
     async def on_message(self, client: Client, topic, payload, qos, properties):
         logger.info(
             f"[RECV MSG {client._client_id}] TOPIC: {topic} PAYLOAD: {payload} QOS: {qos} PROPERTIES: {properties}")
+        topic_words = topic.split("/")
+
+        if topic == 'thingtalk/bridge/state':
+            logger.debug(payload)
+
+        if client.app.state.mode == "gateway":
+            logger.debug("gateway")
+            if topic[2] == 'config':
+                logger.debug(payload)
         
     def on_disconnect(self, client: Client, packet, exc=None):
         logger.info(f"[DISCONNECTED {client._client_id}]")
@@ -30,3 +40,10 @@ def on_subscribe(self, client: Client, mid, qos, properties):
                 client.resubscribe(subscription)
             logger.info('[SUBSCRIBED {}] mid {}, QOS: {}, properties {}'.format(
                 client._client_id, mid, granted_qos, properties))
+
+
+username = settings.MQTT_USERNAME
+password = settings.MQTT_PASSWORD
+host = settings.MQTT_HOST
+
+mqtt = ThingMqtt(host, "1883", username=username, password=password)
diff --git a/thingtalk/routers/things.py b/thingtalk/routers/things.py
index 1724160..4e490d2 100644
--- a/thingtalk/routers/things.py
+++ b/thingtalk/routers/things.py
@@ -25,7 +25,7 @@ async def get_things(request: Request) -> UJSONResponse:
     descriptions = []
     for idx, thing in tuple(things.get_things()):
         description = thing.as_thing_description()
-        description["href"] = thing.href
+
         description["links"].append({
             "rel": "alternate",
             "href": f"{get_ws_href(request)}{thing.href}",
diff --git a/thingtalk/toolkits/mqtt.py b/thingtalk/toolkits/mqtt.py
index 6f33975..ca007bd 100644
--- a/thingtalk/toolkits/mqtt.py
+++ b/thingtalk/toolkits/mqtt.py
@@ -73,10 +73,14 @@ def on_connect(self, client: Client, flags, rc, properties):
     async def on_message(self, client: Client, topic, payload, qos, properties):
         logger.info(
             f"[RECV MSG {client._client_id}] TOPIC: {topic} PAYLOAD: {payload} QOS: {qos} PROPERTIES: {properties}")
+        logger.debug("on message")
         if topic == 'thingtalk/bridge/':
             pass
-        if topic == 'thingtalk/+/config':
-            pass
+
+        if client.app.state.mode == "gateway":
+            logger.debug("gateway")
+            if topic == 'thingtalk/+/config':
+                pass
 
     def on_disconnect(self, client: Client, packet, exc=None):
         logger.info(f"[DISCONNECTED {client._client_id}]")