I am trying to get all the request headers that I have set after an ajax call is made. My authorization and a few other headers vary for each call and it is a pain to keep track of all of them. In the $( document ).ajaxComplete(), the xhr and the settings do not seem to have the request headers. There are the whole response headers though. Is there a way wherein I can get all the request headers after I pass the request (in the ajaxcomplete)?
Related
When we send non-simple request to another domain, the preflight request is being send first by the browser. Is it possible to somehow read the body or headers of preflight request responses in javascript?
For example:
fetch('example.com', { method: "DELETE" }).then(handler)
Will trigger a preflight request and if it succeeds, the "handler" function will be able to read a response for our main request. But is there any way to access the preflight request's response?
After looking through the fetch specification, my understanding of the request access is the preflight request will be returned if it had an error, otherwise, the main request will be returned (error or not) and the preflight will go inaccessible. However, I wasn't able to test this, and the specification wasn't the clearest for understanding the behavior of the function.
Edit:
I did some testing with https://test-cors.org, and found that I was wrong. Whenever the CORS request fails, all that you can get is the error object. If the request succeeds, all you get is the final response. The automated preflight request is completely hidden from JS, so as #Titus said in a comment, the only way to get the preflight response is to manually configure and send an OPTIONS request.
I want to access request headers (NOT response headers) after a request to the server, how do I do it?
I'm currently using angular, but open to Javascript solutions. The response only gives response headers.
I am using angular 2 for the front end and jersey for the back end. Whenever I am calling any API through angular, It sends a preflight request (OPTIONS request) and then sends the original request.
As we have no control over custom headers for OPTIONS request. We have our filters in the back end which checks the request headers and if it does not contain our certain headers parameters then it rejects the request. So OPTION request gets rejected.
So, Is there any way to stop these preflight requests? Or Is there any way to handle these requests in the backend side?
Please set this "Access-Control-Allow-Origin: *" in header from server side
Here's my situation: I make an ajax post to a server endpoint, and it sends me back some JSON data in response. This JSON response also includes the Set-cookie header.
Does the cookie get set automatically when it's in a response to an ajax request, or do I have to read it out of the headers and do it manually?
(As opposed to the headers being present on the response to a form submit, where I know the browser will be handling the response and its headers on its own, no JS necessarily involved.)
Yes, it gets set automatically. An AJAX request is just an HTTP request. You can send Cookie headers, and receive Set-Cookie Headers normally.
I don't want to know how to make cross XHR request, i want to know how to make cross xhr request with XHR header (X-Requested-With: XMLHttpRequest ) <-- I want this header to get sent with request to server, when i try with traditional way of http.setRequestHeader("","")
where var http = new XMLHttpRequest();
it doesn't work. Wondering, what is the way to do that?
p.s: ALL request will be POST based
Adding additional headers triggers a preflight OPTIONS request which must get a response with suitable CORS headers before the browser will make the POST request.
You need to configure the server to respond to the OPTIONS request and say that the non-standard header is allowed.