![]() Start by using common API explorers such as Microsoft’s Graph Explorer or the Swagger Pet Store to check that you’re constructing requests correctly and that you understand how to use authentication tokens to work with restricted APIs. You can pick from the common HTTP query directives, including the common POST and GET queries used in RESTful APIs. ![]() ![]() To test an API, open a blank Network Console from F12, and then click Create a Request to open the HTTP query builder. The Network Console works similarly, giving you a scratch pad to quickly try out API URLs. You’ve probably used tools such as Postman for this, but they’re outside the browser and best suited for developing and testing APIs from scratch. The real advantage of the Edge DevTools Network Console is the ability to use it as a quick way to try out HTTP APIs without writing any code. Knowing that the HTTP server that’s acting as a façade to your API is working isn’t the same as knowing that the API is returning the values you expect. If you’re working with REST APIs and using a browser for debugging, you know that there’s a lot more to an API than a 200 OK message, especially if you’re working through a REST proxy or an API broker. Using the Network Console with REST APIsĪt first sight it’s a way to record and analyze HTTP requests, capture recent activity, and drill down into server responses beyond the normal HTTP response codes. However, the most interesting new feature allows you to both edit and replay network events in the new Network Console. The latest stable release, Edge 85, contains several new tools in its experiments, including a much-needed CSS Grid debugger. In the Settings screen choose Experiments and then select the new features you want to use. To turn them on, launch the DevTools pane with F12, then in the top right of the tools pane or window (I prefer the option of a pop-out window rather than a pane, as I can drag the window to a separate monitor) click the Settings icon. The experimental developer tooling is well worth an exploration, as it contains many useful tools that haven’t quite got the production-level polish but can still help you solve significant issues in your code. Each release of the stable and developer versions of the browser adds new tools, in the release F12 console and behind its experimental flags. Microsoft’s switch to Chromium in the new Edge browser has given it the opportunity to extend its built-in developer tools, building on its own history of developer tools in both Trident and EdgeHTML and the work being done in the Chromium open source project. The Chromium evolution of Edge’s developer tools Postman is probably the most popular and most familiar tool out there, but it’s separate from both our development environments and our browsers, making it hard to be sure that we’re designing and testing HTTP calls in the context of our applications. If everything we use is HTTP under the hood, how do we build testing and development tools that can work with those APIs?Īlthough the Open API Initiative and other approaches go a long way to codifying how we describe and implement HTTP-based APIs, we’re usually left cobbling together a mix of different tools to build and test our API calls. HTTP is a simplification, yes, but it’s also an obfuscation. Yes, that’s oversimplifying, but in practice very few occasions demand something completely new. Instead we can take advantage of the GET and POST functions in HTTP and work with RESTful APIs. After all, why develop a new protocol when you can add a custom payload to HTTP? There’s no need to create a new layer in the networking stack when there’s already one that’s extensible, flexible, and secure. ![]() Much of the code we write these days depends on the web.
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