{"id":104981,"date":"2021-12-17T09:00:44","date_gmt":"2021-12-17T03:30:44","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=104981"},"modified":"2021-12-17T12:16:41","modified_gmt":"2021-12-17T06:46:41","slug":"nodejs-web-module","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/nodejs-web-module\/","title":{"rendered":"Node.js Web Module"},"content":{"rendered":"

In this article, we will be discussing about Node.js web Module, web server, how to create a web server, how to create a web client in detail with code and examples.<\/p>\n

Web server and its working:<\/h3>\n

Web servers are programs that deal with http requests. The http requests sent by the client are handled by the web server and it then gives a response to the clients. A web server generally provides the html, stylesheets, and images.<\/p>\n

Web Server Architecture:<\/h3>\n

1. Client:<\/h4>\n

Browsers and other applications that make http requests to the server are known as clients.<\/p>\n

2. Server:<\/h4>\n

This layer takes the requests made by the client and sends them a response.<\/p>\n

3. Business:<\/h4>\n

This layer contains all the logics and functions required in the application, it also interacts with the data layer using databases.<\/p>\n

4. Data:<\/h4>\n

This layer contains the data required by the application. The data is generally stored in the databases.<\/p>\n

Create a Web server:<\/h3>\n

We will be creating a nodejs server using http which is a builtin module of node js.<\/p>\n

Code for creating a web server:<\/strong><\/p>\n

const http = require('http');\r\nhttp.createServer(function (request, response) {\r\n    response.write(\"Welcome to DataFlair\");\r\n    response.end();\r\n}).listen(3000);\r\nconsole.log('Server is running on port 3000');<\/pre>\n
Output:<\/strong><\/p>\n
\"nodejs<\/a><\/p>\n
Making a request to node server:<\/h3>\n
Open your browser and go to localhost:3000 you will see like the below image:<\/p>\n
\"nodejs<\/a><\/p>\n
Output at terminal:<\/strong><\/p>\n
Server is running on port 3000<\/div>\n
Creating web client:<\/h3>\n
Till now, we have seen creating a web server. Now we will see how to create a web client, here we will be creating the web client using the built in http module. In order to make a request from the web client to our web server we will be running the below code from a different terminal and make sure that your web server is running before making a request from your web client.<\/p>\n
Code for creating a web Client:<\/h3>\n
const http = require('http');\r\nconst options = {\r\n    host: 'localhost',\r\n    port: '3000',\r\n    path: '\/'\r\n};\r\nconst callback = function (response) {\r\n    var body = '';\r\n    response.on('data', function (data) {\r\n        body += data;\r\n    });\r\n    response.on('end', function () {\r\n        console.log(body);\r\n    });\r\n}\r\nvar req = http.request(options, callback);\r\nreq.end();\r\n<\/pre>\n
Output<\/strong><\/p>\n
\"nodejs<\/a><\/p>\n
Conclusion:<\/h3>\n
In this article, we have seen Nodejs web modules in detail. Hope you liked it.<\/p>\n","protected":false},"excerpt":{"rendered":"
In this article, we will be discussing about Node.js web Module, web server, how to create a web server, how to create a web client in detail with code and examples. Web server and...<\/p>\n","protected":false},"author":5,"featured_media":105018,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25259],"tags":[25985],"class_list":["post-104981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-node-js-tutorials","tag-node-js-web-module"],"yoast_head":"\nNode.js Web Module - DataFlair<\/title>\n<meta name=\"description\" content=\"Learn about Node.js web module. See Nodejs web server, its architecture & working. 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