#POSTMAN WEBSOCKET HOW TO#
#POSTMAN WEBSOCKET CODE#

We need to create a new Node.js module for the sample project before installing the Fastify framework. We will explore all features that you need to build real-time, Fastify-based apps in this tutorial.įirst, let’s create a new Fastify project to get started. We are going to build several example projects with the Fastify-WebSocket plugin. Fastify-WebSocket tutorial: Creating a basic WebSocket endpoint The Fastify-WebSocket library comes with an inbuilt TypeScript definitions file, so you don’t need third-party TypeScript definitions for your TypeScript-based Fastify-WebSocket projects. We can use this feature to validate WebSocket connections before the WebSocket handshake occurs. The Fastify Hooks API helps listen to specific events in the Fastify HTTP routing lifecycle. Controlling WebSocket connections via Hooks

The Fastify-WebSocket plugin lets developers subscribe to these client events by exposing the underlying Node.js ws library objects. WebSocket client events - like connection initialization, receiving messages, and connection termination - are always helpful in real-time web application development. Subscribing to WebSocket client event handlers within endpoints Therefore, you can handle WebSocket events within any Fastify GET endpoint handler. Rather, it uses the same Fastify server instance by default. The Fastify-WebSocket plugin doesn’t initiate another HTTP server instance to initiate WebSocket connections. Handling WebSocket messages within RESTful handlers This plugin uses the Node.js ws library as the underlying WebSocket server implementation and comes with four excellent features, which I’ll detail below. The Fastify-WebSocket plugin lets developers extend Fastify RESTful backends with WebSocket protocol features.

#POSTMAN WEBSOCKET CODE#

Quick guide to organizing Fastify-WebSocket code.

Fastify-WebSocket tutorial: Building a simple chat app with fastify-websocket.

Handling HTTP responses and WebSockets in the same route.

Validating WebSocket connection initializations with Hooks.

Fastify-WebSocket tutorial: Creating multiple WebSocket endpoints using the same server.

Testing our basic WebSocket endpoint with Postman.

Fastify-WebSocket tutorial: Creating a basic WebSocket endpoint.

#POSTMAN WEBSOCKET HOW TO#

In this tutorial, I will explain how to enable real-time communication channels in your Fastify-based, RESTful web APIs with the fastify-websocket plugin. It helps that popular Node.js web frameworks like Express.js, Fastify, and NestJS offer WebSockets integration via official or third-party plugins. Most development teams choose the HTTP-based RESTful pattern, but some development teams use WebSockets with RESTful endpoints on the same Node.js server to implement real-time, bidirectional communication channels. We can also use various communication mechanisms to implement our Node.js web backends according to our development requirements.

Web developers often choose Node.js for writing web backends because of its simple development environment, rich library ecosystem, asynchronous single-threaded nature, and supportive developer community. Shalitha Suranga Follow Programmer | Author of Neutralino.js | Technical Writer Using WebSockets with Fastify

Postman websocket