integrate cdn url into class

music_genre.py

@@ -59,18 +59,6 @@ with lengths of 270-300s that are divided into 17 genres in total.
 """
 
 
-def _cdn_url(ip='10.115.8.4', port=80):
-    try:
-        # create a socket connection
-        with socket.create_connection((ip, port), timeout=5):
-            return f'http://{ip}/{_NAME}/data/data.zip'
-    except (socket.timeout, socket.error):
-        return f"{_HOMEPAGE}/resolve/main/data/data.zip"
-
-
-_URL = _cdn_url()
-
-
 class music_genre(datasets.GeneratorBasedBuilder):
     def _info(self):
         return datasets.DatasetInfo(
@@ -98,8 +86,16 @@ class music_genre(datasets.GeneratorBasedBuilder):
             ]
         )
 
+    def _cdn_url(self, ip='127.0.0.1', port=80):
+        try:
+            # easy for local test
+            with socket.create_connection((ip, port), timeout=5):
+                return f'http://{ip}/{_NAME}/data/data.zip'
+        except (socket.timeout, socket.error):
+            return f"{_HOMEPAGE}/resolve/main/data/data.zip"
+
     def _split_generators(self, dl_manager):
-        data_files = dl_manager.download_and_extract(_URL)
+        data_files = dl_manager.download_and_extract(self._cdn_url())
         files = dl_manager.iter_files([data_files])
 
         dataset = []