Cors

Modern web pages use more outside scripts and assets than ever before. By default, JavaScript follows the same-origin policy and can only make calls to URLs on the same domain as the running script. So, how can we get our JavaScript-powered pages to use outside scripts? CORS is the answer. …

So you have built your website built and you want to get it out to the world. But you have a backend language that you can’t just deploy on GitHub. Today we are going to be going through the steps of deploying on render with WSL and PSQL. Before we…

What’s causing the error? The browser is sending a preflight request with the “OPTIONS” HTTP request method. This method is used to request the communication options permitted by the server. If you get a “CORS Missing Allow Header” error, it means the allowed header values indicated by the “access-control-allow-headers” header of the response are…

CORS (Cross-origin resource sharing) Cors is a header-based protection mechanism exercised to prevent unwanted requests from accessing the resources on the internet. It checks the origin of the request, headers passed in the request, and methods of the requests, if the headers, methods, and origin are allowed by the server…

“ERR_BLOCKED_BY_RESPONSE.NotSameOrigin” usually occurs in your web browser when a resource that your webpage is trying to access has a different origin (or domain) than the page itself. This is a security feature built into web browsers to prevent cross-site scripting attacks. When a web page attempts to make a request…

If you decided to work with BackBlaze’s B2 Cloud Storage, but run into some CORS issues, this article is for you! BackBlaze has a great and very affordable cloud storage solution. Their API is very robust, and can handle a lot of situations. Their service is super affordable, and is…

The error message “Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource” usually occurs when you are making an AJAX request from a different domain or port than the one where the web application is hosted. This security measure is in place to prevent malicious scripts from…

S3 Encryption Objects should be encrypted and not accessible by anyone. Amazon S3 exposes two endpoints (HTTP and HTTPS). HTTP is recommended for in-flight encryption. Server Side Encryption S3 (SSE-S3) Keys handled and managed by Amazon S3 AES-256 encryption type Must set header: “x-amz-server-side-encryption”:”AES256” Example Object is unencrypted at first When uploading…

If you’re a web developer, chances are you’ve come across the pesky CORS error. But fear not! This article is here to help fellow developers understand and master the CORS policy. I’ll break it down for you in simple terms so you can tackle this error with ease. …