diff --git a/stream.py b/stream.py
index aaa8a36..bcff1f6 100755
--- a/stream.py
+++ b/stream.py
@@ -188,11 +188,12 @@ class MainHandler(tornado.web.RequestHandler):
                     current_list = proxy_list.copy()
                     current = proxy_list.pop()
                     proxy_list = [current] + proxy_list
+                    print(f'before head request, {src}')
                     try:
                         resp = requests.head(src, allow_redirects=True, proxies=current.req, timeout=2)
                         if resp is not None:
                             src = resp.url
-                            print(src)
+                            print(f'after head request, {src}')
                     except Exception as e:
                         print(e)
                     else: