No 'Access-Control-Allow-Origin' header is present on the requested resource

General
1

Hi,
I have an issue with file upload. I have the following error message:XMLHttpRequest cannot load https://api.backendless.com/<url…>. No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://localhost:8000’ is therefore not allowed access.
But Satus is 200, and file was uploaded successfuly. I can see it in “Files” pages.
But I have an error and can not handle success case.
Could you please help me? What am I doing wrong?

2

I have the sane issue when i am using code generated by Backendless for JS.

3

Hi Andrey!
I think answer from this topic will help you:
http://support.backendless.com/t/javascript-file-upload-async-callback-not-working

4

Hi Katya,

This topic did not help me. I am still having the same problem.

Backendless.Files.upload(files, TEST_FOLDER, false, callback);

I have this code in my generated file.

But it does not work.

Any other ideas?

5

Could you please describe your scenario/environment in greater detail? For example, where does localhost:8000 come from? What does your code look like outside of the one line you showed?

6

I started local server with NodeJS for SPA development. So, server is running on localhost and using :8000 port. When I make POST request I am using following url:

“https://api.backendless.com/D77821BA-2D1C-09B3-FFCF-1F4D5C5D1C00/v1/files/:path/:name”

Headers:

    Request URL:https://api.backendless.com/D77821BA-2D1C-09B3-FFCF-1F4D5C5D1C00/v1/files/rooms/ic_add.png Request Method:POST Status Code:200 OK Remote Address:52.1.164.167:443 Response Headersview source Cache-Control:no-cache Cache-Control:: no-store, no-cache, must-revalidate, private Cache-Control:no-cache="set-cookie" Connection:keep-alive Content-Length:104 Content-Type:application/json; charset=utf-8 Date:Sat, 12 Dec 2015 00:17:18 GMT Expires:Thu, 01 Jan 1970 00:00:01 GMT Pragma:: no-cache Server:nginx/1.4.2 Set-Cookie:AWSELB=EFE705250E930025BC0553646066CB6092AE0B3BDDCB39BA30F08C6856C1890BF29F2BA0FE986576420D64280FCA7594019D97405730C3F0FA3D504A643CBD42E7BFF898F5;PATH=/;MAX-AGE=9000 Request Headersview source Accept:application/json, text/plain, */* Accept-Encoding:gzip, deflate Accept-Language:ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4 application-id:D77821BA-2D1C-09B3-FFCF-1F4D5C5D1C00 application-type:REST Cache-Control:no-cache Connection:keep-alive Content-Length:390 Content-Type:multipart/form-data; boundary=----WebKitFormBoundary74wNB1uU98TmPIoG Host:api.backendless.com Origin:http://localhost:8000 Pragma:no-cache Referer:http://localhost:8000/ secret-key:39B4... User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.73 Safari/537.36 Request Payload ------WebKitFormBoundary74wNB1uU98TmPIoG Content-Disposition: form-data; name="file"; filename="ic_add.png" Content-Type: image/png

    ------WebKitFormBoundary74wNB1uU98TmPIoG–

Error in console:

XMLHttpRequest cannot load https://api.backendless.com/D77821BA-2D1C-09B3-FFCF-1F4D5C5D1C00/v1/files/rooms/ic_add.png. No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://localhost:8000’ is therefore not allowed access.

What other information do you need?

7

Thank you for detailed description!
We will investigate this use case on our side.

8

i have the same problem here, 2 months had passed. Any news?

9

Hi Lâm,

Looks like we dropped the ball on this. I apologize. I have scheduled an internal ticket and now this problem is being tracked.

Regards,
Mark

10

thanks Mark

11

I am also having this issue.

12

Hi Phil, All,

The issue has been resolved and would be fixed in next upcoming release.

Regards, Artur.

13

The release is scheduled for tomorrow…

14

Yay!

15

[spoiler=“still waiting for the release…”]

[/spoiler]

16

When you see it on our blog/twitter/facebook, you will know it is there.

17

Hi Andrei, Lâm, Phil

The issue has been resolved and fix is now available in production.

Regards, Artur.