From 1514bfed5b109ace42749cb2201a630a2038facf Mon Sep 17 00:00:00 2001
From: John Smith <xfgryujk@126.com>
Date: Mon, 16 Sep 2019 20:48:03 +0800
Subject: [PATCH] =?UTF-8?q?=E8=87=AA=E5=8A=A8=E6=A3=80=E6=9F=A5=E6=9B=B4?=
 =?UTF-8?q?=E6=96=B0?=
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---
 main.py   | 17 +++++++++++++----
 update.py | 15 +++++++++++++++
 2 files changed, 28 insertions(+), 4 deletions(-)
 create mode 100644 update.py

diff --git a/main.py b/main.py
index 4ef5649..661cf2b 100644
--- a/main.py
+++ b/main.py
@@ -1,13 +1,15 @@
 # -*- coding: utf-8 -*-
 
 import argparse
-import webbrowser
+import asyncio
 import logging
 import os
+import webbrowser
 
 import tornado.ioloop
 import tornado.web
 
+import update
 import views.chat
 import views.config
 import views.main
@@ -31,6 +33,8 @@ def main():
         level=logging.INFO if not args.debug else logging.DEBUG
     )
 
+    asyncio.ensure_future(update.check_update())
+
     app = tornado.web.Application(
         [
             (r'/chat', views.chat.ChatHandler),
@@ -45,10 +49,15 @@ def main():
         debug=args.debug,
         autoreload=False
     )
-    app.listen(args.port, args.host)
+    try:
+        app.listen(args.port, args.host)
+    except OSError:
+        logger.warning('Address is used %s:%d', args.host, args.port)
+        return
+    finally:
+        url = 'http://localhost' if args.port == 80 else f'http://localhost:{args.port}'
+        webbrowser.open(url)
     logger.info('Server started: %s:%d', args.host, args.port)
-    url = 'http://localhost' if args.port == 80 else f'http://localhost:{args.port}'
-    webbrowser.open(url)
     tornado.ioloop.IOLoop.current().start()
 
 
diff --git a/update.py b/update.py
new file mode 100644
index 0000000..68a02bb
--- /dev/null
+++ b/update.py
@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+
+import aiohttp
+
+VERSION = 'v1.1.4'
+
+
+async def check_update():
+    async with aiohttp.ClientSession() as session:
+        async with session.get('https://api.github.com/repos/xfgryujk/blivechat/releases/latest') as r:
+            data = await r.json()
+            if data['name'] != VERSION:
+                print('New version available:', data['name'])
+                print(data['body'])
+                print('Download:', data['html_url'])