Manifest PUT should return 202 Accepted status

Signed-off-by: Stephen J Day <stephen.day@docker.com>

client/client.go

@@ -154,7 +154,7 @@ func (r *clientImpl) PutImageManifest(name, tag string, manifest *manifest.Signe
 
 	// TODO(bbland): handle other status codes, like 5xx errors
 	switch {
-	case response.StatusCode == http.StatusOK:
+	case response.StatusCode == http.StatusOK || response.StatusCode == http.StatusAccepted:
 		return nil
 	case response.StatusCode >= 400 && response.StatusCode < 500:
 		var errors v2.Errors

registry/api_test.go

@@ -336,8 +336,7 @@ func TestManifestAPI(t *testing.T) {
 	}
 
 	resp = putManifest(t, "putting signed manifest", manifestURL, signedManifest)
-
-	checkResponse(t, "putting signed manifest", resp, http.StatusOK)
+	checkResponse(t, "putting signed manifest", resp, http.StatusAccepted)
 
 	resp, err = http.Get(manifestURL)
 	if err != nil {

registry/images.go

@@ -92,6 +92,8 @@ func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http
 		w.WriteHeader(http.StatusBadRequest)
 		return
 	}
+
+	w.WriteHeader(http.StatusAccepted)
 }
 
 // DeleteImageManifest removes the image with the given tag from the registry.