Fix path issues on Windows

CHANGELOG.md

@@ -36,7 +36,8 @@ Using the following categories, list your changes in this order:
 
 ### Fixed
 
-- Fix Django "StreamingHttpResponse must consume synchronous iterators" warning
+- Fix Django `StreamingHttpResponse must consume synchronous iterators` warning
+- Fix Django bug where file paths could fail to be followed on Windows ([Upstream PR](https://github.com/evansd/whitenoise/pull/474))
 
 ## [1.0.0] - 2024-05-08
 

src/servestatic/middleware.py

@@ -4,9 +4,10 @@
 import concurrent.futures
 import contextlib
 import os
-from posixpath import basename
+from posixpath import basename, normpath
 from typing import AsyncIterable
 from urllib.parse import urlparse
+from urllib.request import url2pathname
 
 import django
 from aiofiles.base import AiofilesContextManager
@@ -252,7 +253,10 @@ def add_files_from_finders(self):
 
     def candidate_paths_for_url(self, url):
         if self.use_finders and url.startswith(self.static_prefix):
-            path = finders.find(url[len(self.static_prefix) :])
+            relative_url = url[len(self.static_prefix) :]
+            path = url2pathname(relative_url)
+            normalized_path = normpath(path).lstrip("/")
+            path = finders.find(normalized_path)
             if path:
                 yield path
         paths = super().candidate_paths_for_url(url)