如何在节点环境中模拟浏览器按钮单击？

Question

I am building an android app which is supposed to connect to a server of mine, such that the server performs OAuth2 authentication at a third-party website. In this website there is a button which submits a form via a POST request when clicked. Clicking the button is part of the authentication process.

The problem is that the third-party website's server enforces the same-origin request policy, so a simple AJAX request with application/x-www-form-urlencoded won't do the job - it will get denied due to CORS. As it stands, the only workaround is to somehow click on that button.

How do I do this in nodejs, where there is no window, DOM, etc...?

Answer 1

The CORS mechanism is specifically intended to regulate interactions between a browser and a server. The server sets the rules for how other origins are allowed to interact with it, but ultimately it relies on the browser to enforce these rules - and the browser actually provides the garantee that it will.

Server to server interactions on the other hand aren't subject to CORS, so you can freely interact with other origins directly from your server regardless.

https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS