如果CORS预检失败，将发送真实请求吗？

Question

If a CORS preflight failed, will the real request be sent?

1. The browser didn't send a real request at all?
2. The browser still send the real request, but the response was intercepted?

Answer 1

预检请求用于请求服务器发送带有CORS的实际请求，如果预检请求未通过，则服务器发送错误并且实际请求被阻止。