4/8/2023 0 Comments Http client server![]() Make sure you have Node.JS installed and node and npm are available in your path. We will also be using ES6+ to write our service in. We will be implementing all the things we learnt above. Let's begin coding a REST Service in Node. Data: (also called body or message) contains info you want to send to the server.Įnough with the details – show me the code.content-type: type of resource sent by server. status: the status of request or HTTP code. user-agent: data about client, operating system and vendor accept-language: language understandable by the client host: the IP of client (or from where request originated) Headers: The additional details provided for communication between client and server (remember, REST is stateless).DELETE: Delete existing resource from the server. PATCH or PUT: Update existing resource on the server. Method: Earlier, I wrote that you can either request data or modify it, but how will the server know what kind of operation the client wants to perform? REST implements multiple 'methods' for different types of request, the following are most popular:.For a refresher, it is the URL where the REST Server is listening. Endpoint: I have already told you about this.Let's look deeper into how a request is formed. Anatomy of REST:Īlright, so now we know that data can be requested by the client and the server will respond appropriately. There will be a server listening on that endpoint for requests like the one we made. The returned data is in JSON (JavaScript Object Notation) and can be accessed directly. I will be using Postman to show you the request and response: postman: setting up request Words are boring, let me give you a demonstration. ![]() We connect to that endpoint and send in some data about us (remember, REST is stateless, no data about the request is stored) and the server responds with the correct response. In programming terms, there is an endpoint (a URL) that the server is waiting to get a request. In very broad terms, you ask the server for a certain data or ask it to save some data, and the server responds to the requests. Other alternatives to this are: GraphQL, JSON-Pure and oData. We will talk about this in great detail below. REST API: this defines the endpoint and methods allowed to access/submit data to the server.There are many popular libraries that make creation of these servers a breeze, like ExpressJS for NodeJS and Django for Python. ![]() Others examples are code libraries like axios, superagent and got or some dedicated apps like Postman (or an online version, postwoman!), or a command line tool like cURL!. But, this was succeeded by FetchAPI, a modern, promise based approach to requests. The browser, for a long time, used an in-built function called XMLHttpRequest for all REST requests. You are using one right now! Yes, the browser can act as an uncontrolled REST client (the website handles the browser requests).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |