What is the correct way to add a cookie with axios.post from nodejs ?

Hello,

I am working on a Node.JS -based mobile app (Expo SDK36, React Native 0.61) and I am using axios (0.19.1) to communicate with a private server.

I am trying to make some POST requests which should include an authorization token as a cookie. So far, I have been able to make requests to the server without a cookie in order to authenticate a user through his credentials. The server correctly responds with a cookie in the header representing the user authorization token for any future requests. I am saving that cookie data in a class field this.user_auth_token. No matter how I try however, it seems like I am unable to add a cookie to a future request to the server. In code:

const myServerInstance = axios.create({
    method: "POST",
    baseURL: "http://my-private-server.abc",
    auth: {
        // the server requires basic authentication before accepting any requests
        username: "my-private-username",
        password: "MY_sup3r_S7R0n6_p@$$w0rd"
    },
    headers: {
        "Content-Type": "application/json"
    }
});

/* somewhere else in the node.js app code */
myServerInstance.post("/login", {
    user_name: "SomeUserName",
    user_password: "Encrypted_p@$$w0rd"
}).then( response => {
    // yey, response received, let's get the token from the cookies in the response
    this.user_auth_token = response.headers["set-cookie"][0].match(/token=(.+);/);
}).catch( error => {
    console.log(":sad-face: an error occurred...", error);
});

Until here, everything is good. I get the token, I have it saved in this.user_auth_token, all good. Now, I’ll try to make a request that needs this token in order to be accepted:

// at this point the value of this.user_auth_token is correctly the authorization token
myServerInstance.post("/load-user-profile", {
    headers: {
        "Content-Type": "application/json",
        Cookie: `token=${this.user_auth_token};`
    }
}).then( response => {
    console.log("USER PROFILE RESPONSE DATA", response.data);
}).catch( error => {
    console.log(":sad-face-again: some error", error.message);
    // the error message is a custom error returned from the server:
    // "Request denied, invalid or missing authorization token"
});

I have tried passing the Cookie as many different types of data including:

• { token: this.user_auth_token }
• JSON.stringify({ token: this.user_auth_token })
• “token=”+this.user_auth_token+“;”
• “token=abcdefghijklmnopqrstuvwxyz;” (a hard-coded string)

and many other that I may have forgotten. None of the ways I tried made the token cookie arrive on the server. I have tried using the withCredentials parameter, both true and false don’t seem to change anything.

So, how can I add a cookie to the post request that axios does ? What am I doing wrong ?

I have also seen this thread: https://github.com/axios/axios/issues/943 No replies from there helped…