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Cross-Origin Resource Sharing (CORS) restrictions typically surface when browser-based clients initiate HTTP requests to backend APIs. The browser enforces security policies that differentiate between standard requests and preflighted (complex) requests, the latter triggering an OPTIONS call before the actual payload transmission. Many traditio ...

1. Installing the NLog Packages Add the following NuGet packages to your project: NLog NLog.Web.AspNetCore These can be installed via the Package Manager Console or the .NET CLI. 2. Configuring NLog Create an NLog.config XML file in the project root. Set its Build Action to Content and Copy to Output Directory to Copy if newer. Below is a sam ...

This article provides an overview of IActionFilter in ASP.NET Core Web API, focusing on its execution order, attribute usage, and registration methods. The environment used is VS2019 with ASP.NET Core 3.1. Execution Order of IActionFilter The filter is called after the controller's constructor is executed. The OnActionExecuting method of IAct ...

XMLHttpRequest Overview XMLHttpRequest provides a JavaScript API for making HTTP requests directly from the browser. It enables dynamic page updates without full page reloads, allowing applications to exchange data with servers in the background. Request Lifecycle Sending GET Requests // Create a new XHR instance const request = new XMLHttpRequ ...

To build a WebSocket server using SuperSocket in an ASP.NET Core Web API project, install the SuperSocket.WebSocket.Server NuGet package (referred to here as SuperWebSocket). This guide demonstrates how to embed and manage a WebSocket server within a .NET 5+ Web API application using version 2.0.0-beta.10 of the library. The approach assumes fa ...

Ocelot is a popular API gateway solution for .NET developers. In this guide, I'll walk you through a basic implementation to get you started with Ocelot.Before beginning, ensure you have .NET Core installed. For this example, I'm using .NET Core 3.1 with Ocelot package version 16.0.1. Start by creating a new Web API project and installing the O ...

This series provides a concise guide on using JWT (JSON Web Tokens) to create tokens for authentication in an ASP.NET Core Web API. 1. Create a ASP.NET Core Web API Project We'll be using Visual Studio 2019 with .NET Core 3.1. 2. Add JWT Services 2.1 Install the NuGet Package Install System.IdentityModel.Tokens.Jwt via NuGet Package Manager. 2. ...

Project Initialization To begin, launch Visual Studio and create a new project using the "ASP.NET Core Web Application" template. After naming the solution and selecting a location, choose the API template targeting .NET Core (specifically version 3.1). For simplicity in local testing, you may uncheck the "Configure for HTTPS" option found in t ...