From 8221bbc0beafca4fe43787ad26348f69be73c224 Mon Sep 17 00:00:00 2001
From: Andrew Godwin <andrew@aeracode.org>
Date: Sat, 20 Feb 2016 23:33:27 +0000
Subject: [PATCH] Staticfiles handler and consumer

---
 channels/staticfiles.py | 65 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 channels/staticfiles.py

diff --git a/channels/staticfiles.py b/channels/staticfiles.py
new file mode 100644
index 0000000..8169be8
--- /dev/null
+++ b/channels/staticfiles.py
@@ -0,0 +1,65 @@
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.contrib.staticfiles import utils
+from django.contrib.staticfiles.views import serve
+from django.utils.six.moves.urllib.parse import urlparse
+from django.utils.six.moves.urllib.request import url2pathname
+
+from .handler import AsgiHandler, ViewConsumer
+
+
+class StaticFilesHandler(AsgiHandler):
+    """
+    Wrapper handler that serves the static files directory.
+    """
+
+    def __init__(self, *args, **kwargs):
+        super(StaticFilesHandler, self).__init__()
+        self.base_url = urlparse(self.get_base_url())
+
+    def get_base_url(self):
+        utils.check_settings()
+        return settings.STATIC_URL
+
+    def _should_handle(self, path):
+        """
+        Checks if the path should be handled. Ignores the path if:
+
+        * the host is provided as part of the base_url
+        * the request's path isn't under the media path (or equal)
+        """
+        return path.startswith(self.base_url[2]) and not self.base_url[1]
+
+    def file_path(self, url):
+        """
+        Returns the relative path to the media file on disk for the given URL.
+        """
+        relative_url = url[len(self.base_url[2]):]
+        return url2pathname(relative_url)
+
+    def serve(self, request):
+        """
+        Actually serves the request path.
+        """
+        return serve(request, self.file_path(request.path), insecure=True)
+
+    def get_response(self, request):
+        from django.http import Http404
+
+        if self._should_handle(request.path):
+            try:
+                return self.serve(request)
+            except Http404 as e:
+                if settings.DEBUG:
+                    from django.views import debug
+                    return debug.technical_404_response(request, e)
+        return super(StaticFilesHandler, self).get_response(request)
+
+
+class StaticFilesConsumer(ViewConsumer):
+    """
+    Overrides standard view consumer with our new handler
+    """
+
+    handler_class = StaticFilesHandler