为请求设置标题时，NodeJS http服务器响应标题为空

Question

So I'm sending a request via ajax and I'm setting the headers there and I can log and see that the headers are indeed being set

$.ajax({
    headers: {
        Authorization: localStorage.getItem('t')
    },
    type: 'GET',
    dataType: 'json',
    url: `/updatebackground?b=${bg}`,
    success: function(data) {
        console.log('yay');
    },
    complete: function() {
        console.log(this.headers)
    }
});

But when I try to log the headers in node they come back as blank

http.createServer(async (req, res) => {
    console.log(JSON.stringify(res._headers));
});

logs "{}" I'm unsure as to why this happens and any help would be appreciated

Answer 1

Apparenly it works with req.headers.authorization Doesn't really make sense as to why it's lowercase but eh whatever. I'll keep this here for anyone else with the same issue.

Answer 2

On the server, you're trying to access the headers on the response object, not the request object. Since the client set the headers on the request the desired headers would be on the request, or req .

If you change that server-side code to:

http.createServer(async (req, res) => {
    console.log(req.headers);
});

You will see the request headers

Answer 3

This is because you are logging the res headers and not the req headers.

the proper code for logging the request headers is:

http.createServer(async (req, res) => {
    console.log(JSON.stringify(req.headers));
});

res._headers is for setting the headers for the response that is sent by the server to client as the request's answer.