Attachment File Upload Problem

Hi,

I’m trying to add an item with an attachment to a list. Adding an item is OK, but adding an attachment is problematic. The code is below;

pnp.sp.lists.getByTitle("MyList").items.add(item).then(response => {
    response.item.attachmentFiles.add("file.txt", "file content 123");
});

The error:

POST http://localhost:8383/MyList')/items(11)/AttachmentFiles/add(FileName='file.txt') 400 (Bad Request)
Fetch API cannot load http://localhost:8383/MyList')/items(11)/AttachmentFiles/add(FileName='file.txt'). 
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8080' is therefore not allowed access. The response had HTTP status code 400. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
Uncaught (in promise) TypeError: Failed to fetch

Headers:

General
    Request URL: http://localhost:8383/_api/web/lists/getByTitle('MyList')/items(11)/AttachmentFiles/add(FileName='file.txt')
    Request Method:POST
    Status Code:400 Bad Request
    Remote Address:127.0.0.1:8383
    Referrer Policy:no-referrer-when-downgrade
Response Headers
    Connection:keep-alive
    Content-Length:1048
    Content-Security-Policy:default-src 'self'
    Content-Type:text/html; charset=utf-8
    Date:Thu, 04 May 2017 07:30:25 GMT
    X-Content-Type-Options:nosniff
    X-Powered-By:Express
Request Headers
    accept:application/json
    Accept-Encoding:gzip, deflate, br
    Accept-Language:en-US,en;q=0.8
    Connection:keep-alive
    Content-Length:14
    content-type:application/json;odata=verbose;charset=utf-8
    Host:localhost:8383
    Origin:http://localhost:8080
    Referer:http://localhost:8080/
    User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.36 Safari/537.36
    x-clientservice-clienttag:PnPCoreJS:2.0.4
    x-requestdigest:0xB1B9800178D92F1E17AAE31002BA4F4608B210FCFFDC51F863494EEDBCD5C541781BC78F35C5103F93E4163D10CF81F64AE92C257DB818F38015C4B2CBE21D0F,04 May 2017 07:30:02 -0000
Request Payload
    file content 123

I think, the proxy server responses lack Access-Control-Allow-Origin header for this type of requests.

How can we solve it?

[ismet]

@koltyakov, sorry, it was my mistake… I had put rawBodyLimitSize into _private.conf.json instead of settings object.

Now, attachment upload is fully functional… And you’re a hero! 😃

[koltyakov]

Thanks for reporting. I’ll figure it out. And come back to you. With current workload, it likely will happen on this weekend.