Create http post in browser with credentials true

Ionic Framework ionic-v3
1

I try to create an http post like this:

getData()
{
let headers = new Headers({"Content-Type":"application/json; charset=UTF-8",
                              "Accept":"application/json",
                              "Access-Control-Allow-Origin" : "*",
                              'Allow-Control-Allow-Origin': '*'
                              });

return this.http.post(url, body,  { withCredentials: true,
        headers: headers
    })
    .map(res => res.json())
    .toPromise();
}

And got this error:

XMLHttpRequest cannot load http://example.org/getData. Response to preflight request doesn’t pass access control check: The value of the ‘Access-Control-Allow-Origin’ header in the response must not be the wildcard ‘*’ when the request’s credentials mode is ‘include’. Origin ‘http://localhost:8100’ is therefore not allowed access. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

Another requests are working with these two chrome extensions: Moesif Origin & CORS Changer or Allow-Control-Allow-Origin: *. But when is set withCredentials true i get error.

I try to add proxy in to ionic.config.json file like this:

“proxies”: [
{
“path”: “/”,
“proxyUrl”: “http://example.org”
}
]

but nothing happened, then i changed the wildcards to http://localhost:8100/ and/or the site address, but it’s didn’t work too. The server allow everything, the problem is the chrome preflight. I read the forums for two days, and I out of ideas, please help.Preformatted text

2

Please edit your post and use the </> button above the post input field to format your code or error message or wrap it in ``` (“code fences”) manually. This will make sure your text is readable and if it recognizes the programming language it also automatically adds code syntax highlighting. Thanks.

3

What is your url, is it /getData, did you resolve it?
Was you able to forward also the credential header?