diff --git a/pyproject.toml b/pyproject.toml
index b7f8cd6..26f306e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "thingtalk"
-version = "0.7.13"
+version = "0.7.14"
 description = "Web of Things framework, high performance, easy to learn, fast to code, ready for production"
 authors = ["hidaris <zuocool@gmail.com>"]
 readme = "README.md"
@@ -40,6 +40,8 @@ mkdocs-material = { version = "^6.1.6", optional = true }
 async-cron = "^1.6.2"
 gmqtt = "^0.6.9"
 dynaconf = "^3.1.2"
+click = "^7.1.2"
+rich = "^9.10.0"
 
 [tool.poetry.dev-dependencies]
 pytest = "^6.0"
@@ -49,3 +51,7 @@ black = {version = "^20.8b1", allow-prereleases = true}
 
 [tool.poetry.extras]
 docs = ["mkdocs-material"]
+
+[tool.poetry.scripts]
+hello = 'thingtalk.app:hello'
+
diff --git a/thingtalk/__init__.py b/thingtalk/__init__.py
index e9fdc02..e23457a 100644
--- a/thingtalk/__init__.py
+++ b/thingtalk/__init__.py
@@ -4,7 +4,7 @@
 from .models.action import Action
 from .models.event import Event
 from .models.property import Property
-from .app import app
+from .app import app, hello
 from .models.containers import SingleThing, MultipleThings
 from .models.thing import Thing
 from .domains.iot import Device
diff --git a/thingtalk/app.py b/thingtalk/app.py
index 55ec6cc..8c5a0b1 100644
--- a/thingtalk/app.py
+++ b/thingtalk/app.py
@@ -1,4 +1,5 @@
 import socket
+import click
 
 from fastapi import FastAPI, APIRouter
 from loguru import logger
@@ -21,8 +22,8 @@
     description="Web of Things framework, high performance, easy to learn, fast to code, ready for production",
 )
 server = Server()
-server.href_prefix = f"/things/{server._id}"
-app.state.things = MultipleThings({server._id: server}, "things")
+server.href_prefix = f"/things/{server.id}"
+app.state.things = MultipleThings({server.id: server}, "things")
 
 zeroconf = Zeroconf()
 
@@ -106,3 +107,12 @@ async def publish(topic: str, payload: OutMsg):
 
 app.include_router(restapi)
 app.include_router(websockets.router)
+
+
+@click.command()
+@click.option("--count", default=1, e=int, help="Number of greetings.")
+@click.option("--name", type=str, prompt="Your name", help="The person to greet.")
+def hello(count: int, name: str):
+    """Simple program that greets NAME for a total of COUNT times."""
+    for _ in range(count):
+        click.echo(f"Hello, {name}!")
diff --git a/thingtalk/models/thing.py b/thingtalk/models/thing.py
index 6ff9d59..a7d4d18 100644
--- a/thingtalk/models/thing.py
+++ b/thingtalk/models/thing.py
@@ -183,7 +183,7 @@ def href_prefix(self) -> str:
         return self._href_prefix
 
     @href_prefix.setter
-    def href_prefix(self, prefix: str):
+    def href_prefix(self, prefix: str) -> None:
         """
         Set the prefix of any hrefs associated with this thing.
         prefix -- the prefix
@@ -203,7 +203,7 @@ def ui_href(self) -> str:
         return self._ui_href
 
     @ui_href.setter
-    def ui_href(self, href):
+    def ui_href(self, href) -> None:
         """
         Set the href of this thing's custom UI.
         href -- the href
@@ -227,7 +227,7 @@ def title(self):
         return self._title
 
     @title.setter
-    def title(self, title):
+    def title(self, title) -> None:
         """
         Set the new title of this thing.
         title -- the new title
diff --git a/thingtalk/toolkits/mqtt.py b/thingtalk/toolkits/mqtt.py
index 108d8d1..6f33975 100644
--- a/thingtalk/toolkits/mqtt.py
+++ b/thingtalk/toolkits/mqtt.py
@@ -73,6 +73,10 @@ 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}")
+        if topic == 'thingtalk/bridge/':
+            pass
+        if topic == 'thingtalk/+/config':
+            pass
 
     def on_disconnect(self, client: Client, packet, exc=None):
         logger.info(f"[DISCONNECTED {client._client_id}]")
diff --git a/thingtalk/utils.py b/thingtalk/utils.py
index 2d37422..9d5bc9a 100644
--- a/thingtalk/utils.py
+++ b/thingtalk/utils.py
@@ -6,6 +6,7 @@
 import asyncio
 
 from contextlib import contextmanager
+from loguru import logger
 from threading import Thread
 
 
@@ -88,3 +89,52 @@ def run_forever(loop):
     finally:
         loop.call_soon_threadsafe(loop.stop)
         thread.join()
+
+
+class PortDetect:
+    """
+    扫描本机的可用端口。
+    eg:
+        pd = PortDetect()
+        pd()
+        print pd.avaliable
+    ==>
+        50000
+
+    默认会从本机的50000端口开始扫描，依次递增到55000，如果发现可用的端口则把端口号赋值给
+    类的成员变量avaliable，如果扫描完成后avaliable的值是0，说明所有端口都被占用了。
+
+    也可以单独使用check_port方法，通过传入端口的方式来检查端口是否被占用。
+    eg:
+        pd = PortDetect()
+        pd.check_port(9999)
+
+    ==>
+        True
+    """
+    def __init__(self, range_s=50000, range_e=55000):
+        self.range_s = range_s
+        self.range_e = range_e
+        self.available = 0
+
+    def check_port(self, port):
+        """
+        单独检查端口是否可用
+        :param port: int, 端口号
+        :return: Bool， True表示端口可用，False表示端口不可用
+        """
+        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        result = s.connect_ex(("127.0.0.1", int(port)))
+        if result == 0:
+            return False
+        else:
+            return True
+
+    def __call__(self, *args, **kwargs):
+        for x in range(self.range_s, self.range_e):
+            rst = self.check_port(x)
+            if rst:
+                self.available = x
+                break
+        else:
+            logger.error("all port used")