获取CORS节点http代理以响应200个选项

Question

I am trying to get a web page running on :9000 to make a request to a reverse proxy running in node on :8080 to accept requests as if it was on the same domain. I have learned that a different port == a different domain, thus OPTIONS requests are sent. My server comes back with 401 unauthorized, and angular's http client gets the response with no data, no code with a console error "invalid http status code 401 unauthorized".

I just want the reverse proxy to act as if it was on the same domain and say "OK" to these options requests.

Answer 1

It is the responsibility of the reverse proxy to respond to the OPTIONS request with the expected CORS headers. Can you provide more details on the node reverse proxy. Is it express based ?

These are the headers you need to respond with (your use case may vary but this is what I needed in a recent project):

res.setHeader('Access-Control-Allow-Origin', 'whatever.com:9000');
res.setHeader('Access-Control-Allow-Headers', 'Content-Type');
res.setHeader('Access-Control-Allow-Credentials', true); // you probably dont want this one unless there is auth/cookies involved
res.setHeader('Access-Control-Allow-Methods', 'GET,PATCH,POST,PUT,DELETE');