Allow XResponses to keep original headers provided to base response

demo/demoproject/apache/tests.py

@@ -43,3 +43,19 @@ def test_response(self):
             basename="hello-world.txt",
             file_path="/apache-optimized-by-decorator/hello-world.txt",
         )
+
+
+class ModifiedHeadersTestCase(django.test.TestCase):
+    def test_response(self):
+        """'apache:modified_headers' returns X-Sendfile response."""
+        setup_file()
+        url = reverse("apache:modified_headers")
+        response = self.client.get(url)
+        assert_x_sendfile(
+            self,
+            response,
+            content_type="text/plain; charset=utf-8",
+            basename="hello-world.txt",
+            file_path="/apache-modified-headers/hello-world.txt",
+        )
+        self.assertEqual(response['X-Test'], 'header')

demo/demoproject/apache/urls.py

@@ -15,4 +15,9 @@
         views.optimized_by_decorator,
         name="optimized_by_decorator",
     ),
+    path(
+        "modified_headers/",
+        views.modified_headers,
+        name="modified_headers",
+    ),
 ]

demo/demoproject/apache/views.py

@@ -22,3 +22,17 @@
     source_url=storage.base_url,
     destination_dir="/apache-optimized-by-decorator/",
 )
+
+
+def _modified_headers(request):
+    view = StorageDownloadView.as_view(storage=storage, path="hello-world.txt")
+    response = view(request)
+    response["X-Test"] = 'header'
+    return response
+
+
+modified_headers = x_sendfile(
+    _modified_headers,
+    source_url=storage.base_url,
+    destination_dir="/apache-modified-headers/",
+)

demo/demoproject/lighttpd/tests.py

@@ -43,3 +43,19 @@ def test_response(self):
             basename="hello-world.txt",
             file_path="/lighttpd-optimized-by-decorator/hello-world.txt",
         )
+
+
+class ModifiedHeadersTestCase(django.test.TestCase):
+    def test_response(self):
+        """'lighttpd:modified_headers' returns X-Sendfile response."""
+        setup_file()
+        url = reverse("lighttpd:modified_headers")
+        response = self.client.get(url)
+        assert_x_sendfile(
+            self,
+            response,
+            content_type="text/plain; charset=utf-8",
+            basename="hello-world.txt",
+            file_path="/lighttpd-modified-headers/hello-world.txt",
+        )
+        self.assertEqual(response['X-Test'], 'header')

demo/demoproject/lighttpd/urls.py

@@ -15,4 +15,9 @@
         views.optimized_by_decorator,
         name="optimized_by_decorator",
     ),
+    path(
+        "modified_headers/",
+        views.modified_headers,
+        name="modified_headers",
+    ),
 ]

demo/demoproject/lighttpd/views.py

@@ -22,3 +22,17 @@
     source_url=storage.base_url,
     destination_dir="/lighttpd-optimized-by-decorator/",
 )
+
+
+def _modified_headers(request):
+    view = StorageDownloadView.as_view(storage=storage, path="hello-world.txt")
+    response = view(request)
+    response["X-Test"] = 'header'
+    return response
+
+
+modified_headers = x_sendfile(
+    _modified_headers,
+    source_url=storage.base_url,
+    destination_dir="/lighttpd-modified-headers/",
+)

demo/demoproject/nginx/tests.py

@@ -51,3 +51,23 @@ def test_response(self):
             with_buffering=None,
             limit_rate=None,
         )
+
+
+class ModifiedHeadersTestCase(django.test.TestCase):
+    def test_response(self):
+        """'nginx:modified_headers' returns X-Sendfile response."""
+        setup_file()
+        url = reverse("nginx:modified_headers")
+        response = self.client.get(url)
+        assert_x_accel_redirect(
+            self,
+            response,
+            content_type="text/plain; charset=utf-8",
+            charset="utf-8",
+            basename="hello-world.txt",
+            redirect_url="/nginx-modified-headers/hello-world.txt",
+            expires=None,
+            with_buffering=None,
+            limit_rate=None,
+        )
+        self.assertEqual(response['X-Test'], 'header')

demo/demoproject/nginx/urls.py

@@ -16,4 +16,9 @@
         views.optimized_by_decorator,
         name="optimized_by_decorator",
     ),
+    path(
+        "modified_headers/",
+        views.modified_headers,
+        name="modified_headers",
+    ),
 ]

demo/demoproject/nginx/views.py

@@ -22,3 +22,17 @@
     source_url=storage.base_url,
     destination_url="/nginx-optimized-by-decorator/",
 )
+
+
+def _modified_headers(request):
+    view = StorageDownloadView.as_view(storage=storage, path="hello-world.txt")
+    response = view(request)
+    response["X-Test"] = 'header'
+    return response
+
+
+modified_headers = x_accel_redirect(
+    _modified_headers,
+    source_url=storage.base_url,
+    destination_url="/nginx-modified-headers/",
+)

django_downloadview/apache/middlewares.py

@@ -32,4 +32,5 @@ def process_download_response(self, request, response):
             content_type=response["Content-Type"],
             basename=response.basename,
             attachment=response.attachment,
+            headers=response.headers,
         )

django_downloadview/apache/response.py

@@ -7,9 +7,12 @@
 class XSendfileResponse(ProxiedDownloadResponse):
     "Delegates serving file to Apache via X-Sendfile header."
 
-    def __init__(self, file_path, content_type, basename=None, attachment=True):
+    def __init__(self, file_path, content_type, basename=None, attachment=True, headers=None):
         """Return a HttpResponse with headers for Apache X-Sendfile."""
-        super().__init__(content_type=content_type)
+        # content-type must be provided only as keyword argument to response
+        if headers and content_type:
+            headers.pop('Content-Type', None)
+        super().__init__(content_type=content_type, headers=headers)
         if attachment:
             self.basename = basename or os.path.basename(file_path)
             self["Content-Disposition"] = content_disposition(self.basename)

django_downloadview/apache/tests.py

@@ -1,7 +1,7 @@
 from django_downloadview.apache.response import XSendfileResponse
 
 
-class XSendfileValidator(object):
+class XSendfileValidator:
     """Utility class to validate XSendfileResponse instances.
 
     See also :py:func:`assert_x_sendfile` shortcut function.

django_downloadview/lighttpd/middlewares.py

@@ -19,9 +19,7 @@ def __init__(
         self, get_response=None, source_dir=None, source_url=None, destination_dir=None
     ):
         """Constructor."""
-        super(XSendfileMiddleware, self).__init__(
-            get_response, source_dir, source_url, destination_dir
-        )
+        super().__init__(get_response, source_dir, source_url, destination_dir)
 
     def process_download_response(self, request, response):
         """Replace DownloadResponse instances by XSendfileResponse ones."""
@@ -34,4 +32,5 @@ def process_download_response(self, request, response):
             content_type=response["Content-Type"],
             basename=response.basename,
             attachment=response.attachment,
+            headers=response.headers,
         )

django_downloadview/lighttpd/response.py

@@ -7,9 +7,12 @@
 class XSendfileResponse(ProxiedDownloadResponse):
     "Delegates serving file to Lighttpd via X-Sendfile header."
 
-    def __init__(self, file_path, content_type, basename=None, attachment=True):
+    def __init__(self, file_path, content_type, basename=None, attachment=True, headers=None):
         """Return a HttpResponse with headers for Lighttpd X-Sendfile."""
-        super(XSendfileResponse, self).__init__(content_type=content_type)
+        # content-type must be porvided only as keyword argument to response
+        if headers and content_type:
+            headers.pop('Content-Type', None)
+        super().__init__(content_type=content_type, headers=headers)
         if attachment:
             self.basename = basename or os.path.basename(file_path)
             self["Content-Disposition"] = content_disposition(self.basename)

django_downloadview/nginx/middlewares.py

@@ -85,6 +85,7 @@ def process_download_response(self, request, response):
             with_buffering=self.with_buffering,
             limit_rate=self.limit_rate,
             attachment=response.attachment,
+            headers=response.headers,
         )
 
 

django_downloadview/nginx/response.py

@@ -19,9 +19,13 @@ def __init__(
         with_buffering=None,
         limit_rate=None,
         attachment=True,
+        headers=None,
     ):
         """Return a HttpResponse with headers for Nginx X-Accel-Redirect."""
-        super(XAccelRedirectResponse, self).__init__(content_type=content_type)
+        # content-type must be porvided only as keyword argument to response
+        if headers and content_type:
+            headers.pop('Content-Type', None)
+        super().__init__(content_type=content_type, headers=headers)
         if attachment:
             self.basename = basename or url_basename(redirect_url, content_type)
             self["Content-Disposition"] = content_disposition(self.basename)

django_downloadview/nginx/tests.py

@@ -1,7 +1,7 @@
 from django_downloadview.nginx.response import XAccelRedirectResponse
 
 
-class XAccelRedirectValidator(object):
+class XAccelRedirectValidator:
     """Utility class to validate XAccelRedirectResponse instances.
 
     See also :py:func:`assert_x_accel_redirect` shortcut function.