Issue10063 - file:// scheme will stop accessing remote hosts via ftp protocol

1 files changed, 3 insertions, 3 deletions

diff --git a/Lib/urllib/request.py b/Lib/urllib/request.py
index e2845c9..9674b96 100644
--- a/Lib/urllib/request.py
+++ b/Lib/urllib/request.py
@@ -1228,8 +1228,8 @@ class FileHandler(BaseHandler):
         url = req.selector
         if url[:2] == '//' and url[2:3] != '/' and (req.host and
                 req.host != 'localhost'):
-            req.type = 'ftp'
-            return self.parent.open(req)
+            if not req.host is self.get_names():
+                raise URLError("file:// scheme is supported only on localhost")
         else:
             return self.open_local_file(req)
 
@@ -1712,7 +1712,7 @@ class URLopener:
         if not isinstance(url, str):
             raise URLError('file error', 'proxy support for file protocol currently not implemented')
         if url[:2] == '//' and url[2:3] != '/' and url[2:12].lower() != 'localhost/':
-            return self.open_ftp(url)
+            raise ValueError("file:// scheme is supported only on localhost")
         else:
             return self.open_local_file(url)