diff --git a/downloader.py b/downloader.py
index 1507c01..dbe161b 100644
--- a/downloader.py
+++ b/downloader.py
@@ -3,25 +3,30 @@ import datetime
 import model
 
 # file_size if byte
+# longest_time seconds
 
 
-def download_file(servers, chunk_size=64 * 1024, file_size=1 * 1024 * 1024):
+def download_file(
+    servers, chunk_size=4 * 1024, file_size=100 * 1024 * 1024, longest_time=60
+):
     for server in servers:
         url = server["url"]
         server_name = server["name"]
         chunk_read = 0
         s_time = datetime.datetime.now()
-        e_time = None
         with requests.get(url, stream=True) as r:
             for chunk in r.iter_content(chunk_size):
-                if chunk_read >= file_size:
-                    e_time = datetime.datetime.now()
-                    break
                 if chunk:
                     chunk_read += len(chunk)
-        duration = (e_time - s_time).total_seconds()
+                    e_time = datetime.datetime.now()
+                    duration = (e_time - s_time).total_seconds()
+                    if chunk_read >= file_size:
+                        break
+                    if duration >= longest_time:
+                        print('Longer than {longest_time} seconds. Stopped.'.format(longest_time=longest_time))
+                        break
         speed = chunk_read / duration / 1024 / 1024 * 8  # mega bit
         model.add_record(server_name, speed)
         # print(now_timestamp{} MB download".format(chunk_read / 1024 / 1024))
         # print("{} seconds".format(duration / 1))
-        # return speed
+        return speed
diff --git a/main.py b/main.py
index 87f16fe..93ac97c 100644
--- a/main.py
+++ b/main.py
@@ -1,8 +1,11 @@
+#!/usr/bin/python
+
+
 import downloader
 
 
 if __name__ == "__main__":
     servers = [{"url": "http://67.209.190.15/1000M.bin", "name": "bwg"}]
-    chunk_read = downloader.download_file(servers)
-    # print(chunk_read)
+    speed = downloader.download_file(servers)
+    print(speed)
     print("Finished.")
diff --git a/model.py b/model.py
index 404e4b3..3e4b81c 100644
--- a/model.py
+++ b/model.py
@@ -9,7 +9,7 @@ mysql_db = MySQLDatabase(
 def add_record(server, speed):
     now = datetime.datetime.now()
     now_timestamp = now.strftime("%Y-%m-%d %H:%M:%S")
-    print(now_timestamp)
+    # print(now_timestamp)
     mysql_db.execute_sql(
         'insert into vps_download_speed(server,speed,datetime) values("{server}",{speed},"{datetime}")'.format(
             server=server, speed=speed, datetime=now_timestamp