The HTTP OPTIONS request method is commonly used to ask a Web server which HTTP methods the server allows; servers typically respond with just a set of headers that includes the Allow header, whose value lists the allowed methods. The OPTIONS method is also a key part of the CORS protocol.
I have an ASP.NET web API that is being called by three different SPA. I am using windows authentication for the web API. I initially tried to configure CORS in the Web.config like this:
I'm using Spring Boot to make a simple rest service. To consume it in Angular 2, I've got CORS problem when retrieving token on OAuth /token endpoint.
The error message in Chrome is below.
error message:
zone.js:101 OPTIONS…
I am developing a web application. It is using Basic authentication. It must process OPTIONS requests. These are web browser preflight requests as well as feature-support requests from WebDAV clients.
As far as I understand OPTIONS request must be…
The Authorization Header is not sent with an HTTP OPTIONS Request. I would like disable this authentication only when the request is OPTIONS and leave it on for other requests. Here is the relevant piece of config code I have at the moment. cannot…
I noticed that my Angular is creating OPTIONS request also before each POST request.
I'm using custom API Service for HTTP request handling.
app.service('ApiService', function ($http) {
/**
* Process remote POST request to give URL with given…
I am making CORS calls. Now, every api call has a OPTIONS preflight call. Is it possible to cache the OPTIONS preflight call?
I see that Cache-Control header can be used to cache actual GET response. https://www.fastly.com/blog/caching-cors
But how…
I noticed that the Mozilla HTTP response codes documentation states that
The methods PUT, DELETE, and OPTIONS can never result in a 200 OK
response.
However it doesn't make clear what response should actually be used. My best guess would be 204:…
I am working on a project which is using embedded Jetty (unfortunately I just "inherited" the server side of the project and am not very familiar with the use of Jetty and its configuration).
An odd case just popped up - I'll do my best to…
I have started designing an API and have decided to have a go at making it conform to REST/HATEOAS. What should the entry point for the API be?
It seems like a common one is GET / but from what I've read it might make more sense logically to use…
If a HTTP resource is not able to handle a request with the given HTTP method, it should send an Allow header to list the allowed HTTP methods. Another possibility to get a response with an Allow header is to send a request with the OPTIONS…
I'm loading my script on a domain and sending some data with POST and the use of Ext.Ajax.request() to that same domain.
Somehow the dev-tools show me, that there is a failed OPTIONS request.
Request URL :…
I use backbone.js' s model. When i save the model, it sends HTTP OPTIONS method to server-side on firefox, but sends HTTP POST method with safari.
I know it is not an issue about backbone.js, it is about CORS. I will just check if method, GET, POST,…
Are HTTP OPTIONS requests appropriate to determine a user's authorization?
I have seen HTTP OPTIONS requests used for preflight to check if a request is valid, but is it okay to use it to determine what access a user has to a specific resource?
Use…
I have CORS working with the following:
[System.Web.Http.HttpPut]
[System.Web.Http.AcceptVerbs("OPTIONS")]
[System.Web.Http.Route("api/exercise")]
public HttpResponseMessage UpdateExercise(Exercise exercise) {
try {
…
I'm building a site that uses w3c CORS to make oAuth-signed HTTP requests to a remote server. Mozilla has a great document explaining how to make and receive CORS requests, and there's good support in firefox, chrome, and safari.
Does anyone…
