Why Isn\'t My Browser Setting Cookies from Cross-Origin Responses?

Browser Refuses to Honor Set-Cookie Header from Cross-Origin Response

Problem:

An application struggles to set and retain an HTTP cookie sent from the backend to the front end.

Specifics:

• The backend correctly sends the cookie in the response header.
• The front end uses Axios to send requests, but the cookie is not being set locally.
• The API router has the necessary headers and CORS settings to allow cookies.

Resolution:

The error lies in the placement of withCredentials in the Axios request configuration. withCredentials is a property of the request, not a request header. To resolve the issue, it should be moved from the headers object to the top-level configuration object.

Corrected Code:

const axiosAuth = axios.create({
  validateStatus: (status: number) => {
    return status >= 200 && status < 300;
  },
  headers: {
    Accept: `application/json`,
    'Content-Type': 'application/json',
  },
  withCredentials: true,
});

By using withCredentials: true in the configuration object, Axios will automatically handle the cross-origin cookie setting and retrieval.

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