cors

No ‘Access-Control-Allow-Origin’ – Node / Apache Port Issue

Try adding the following middleware to your NodeJS/Express app (I have added some comments for your convenience): // Add headers before the routes are defined app.use(function (req, res, next) { // Website you wish to allow to connect res.setHeader(‘Access-Control-Allow-Origin’, ‘http://localhost:8888’); // Request methods you wish to allow res.setHeader(‘Access-Control-Allow-Methods’, ‘GET, POST, OPTIONS, PUT, PATCH, DELETE’); // … Read more

How to handle CORS using JAX-RS with Jersey

Note: Make sure to read the UPDATE at the bottom. The original answer includes a “lazy” implementation of the CORS filter With Jersey, to handle CORS, you can just use a ContainerResponseFilter. The ContainerResponseFilter for Jersey 1.x and 2.x are a bit different. Since you haven’t mentioned which version you’re using, I’ll post both. Make … Read more

Trying to use fetch and pass in mode: no-cors

mode: ‘no-cors’ won’t magically make things work. In fact it makes things worse, because one effect it has is to tell browsers, “Block my frontend JavaScript code from seeing contents of the response body and headers under all circumstances.” Of course you never want that. What happens with cross-origin requests from frontend JavaScript is that … Read more

CORS: Cannot use wildcard in Access-Control-Allow-Origin when credentials flag is true

This is a part of security, you cannot do that. If you want to allow credentials then your Access-Control-Allow-Origin must not use *. You will have to specify the exact protocol + domain + port. For reference see these questions : Access-Control-Allow-Origin wildcard subdomains, ports and protocols Cross Origin Resource Sharing with Credentials Besides * … Read more

How to get a cross-origin resource sharing (CORS) post request working

I solved my own problem when using google distance matrix API by setting my request header with Jquery ajax. take a look below. var settings = { ‘cache’: false, ‘dataType’: “jsonp”, “async”: true, “crossDomain”: true, “url”: “https://maps.googleapis.com/maps/api/distancematrix/json?units=metric&origins=place_id:”+me.originPlaceId+”&destinations=place_id:”+me.destinationPlaceId+”&region=ng&units=metric&key=mykey”, “method”: “GET”, “headers”: { “accept”: “application/json”, “Access-Control-Allow-Origin”:”*” } } $.ajax(settings).done(function (response) { console.log(response); }); Note what i added … Read more

Origin is not allowed by Access-Control-Allow-Origin

I wrote an article on this issue a while back, Cross Domain AJAX. The easiest way to handle this if you have control of the responding server is to add a response header for: Access-Control-Allow-Origin: * This will allow cross-domain Ajax. In PHP, you’ll want to modify the response like so: <?php header(‘Access-Control-Allow-Origin: *’); ?> … Read more

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