Remove the charset from the content type for manifests

endpoints/v2/manifest.py

@@ -70,7 +70,7 @@ def fetch_manifest_by_tagname(namespace_name, repo_name, manifest_ref):
     manifest_bytes.as_unicode(),
     status=200,
     headers={
-      'Content-Type': '%s; charset=utf-8' % manifest_media_type,
+      'Content-Type': manifest_media_type,
       'Docker-Content-Digest': manifest_digest,
     },
   )
@@ -99,7 +99,7 @@ def fetch_manifest_by_digest(namespace_name, repo_name, manifest_ref):
   metric_queue.repository_pull.Inc(labelvalues=[namespace_name, repo_name, 'v2', True])
 
   return Response(manifest_bytes.as_unicode(), status=200, headers={
-    'Content-Type': '%s; charset=utf-8' % manifest_media_type,
+    'Content-Type': manifest_media_type,
     'Docker-Content-Digest': manifest_digest,
   })
 

test/registry/protocol_v2.py

@@ -168,7 +168,7 @@ class V2Protocol(RegistryProtocol):
         return None
 
       # Parse the returned manifest list and ensure it matches.
-      ct, _ = response.headers['Content-Type'].split(';', 1)
+      ct = response.headers['Content-Type']
       assert ct == DOCKER_SCHEMA2_MANIFESTLIST_CONTENT_TYPE
       retrieved = parse_manifest_from_bytes(Bytes.for_string_or_unicode(response.text), ct)
       assert retrieved.schema_version == 2
@@ -185,7 +185,8 @@ class V2Protocol(RegistryProtocol):
                                 headers=headers)
         if expected_failure is not None:
           return None
-        ct, _ = response.headers['Content-Type'].split(';', 1)
+
+        ct = response.headers['Content-Type']
         manifest = parse_manifest_from_bytes(Bytes.for_string_or_unicode(response.text), ct)
         assert not manifest.is_manifest_list
         assert manifest.digest == manifest_digest
@@ -543,11 +544,12 @@ class V2Protocol(RegistryProtocol):
                                                        tag_name),
                               expected_status=(200, expected_failure, V2ProtocolSteps.GET_MANIFEST),
                               headers=headers)
+      response.encoding = 'utf-8'
       if expected_failure is not None:
         return None
 
       # Ensure the manifest returned by us is valid.
-      ct, _ = response.headers['Content-Type'].split(';', 1)
+      ct = response.headers['Content-Type']
       if not self.schema2:
         assert ct in DOCKER_SCHEMA1_CONTENT_TYPES