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HTTP Articles
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How Does the Access-Control-Allow-Origin Header Work?
The Access-Control-Allow-Origin header is a fundamental component of Cross-Origin Resource Sharing (CORS) that enables web browsers to safely allow websites from one origin to request resources from another origin. An origin consists of three components: protocol (scheme), hostname, and port. For example, https://www.tutorialspoint.com:443 represents a complete origin, not just the hostname. How CORS Works CORS uses HTTP headers to inform browsers which origins are permitted to access resources from a server. Here's how the process works: Origin A (e.g., https://www.tutorialspoint.com) wants to request resources from Origin B (e.g., http://api.example.com) The browser blocks ...
Read MoreDifference between HTML and HTTP
HTML and HTTP are foundational technologies of the web that work together but serve different purposes. HTML (HyperText Markup Language) is a markup language used to create and structure web pages, while HTTP (HyperText Transfer Protocol) is a communication protocol that transfers web content between servers and browsers. What is HTML? HTML (HyperText Markup Language) is a markup language used to create the structure and content of web pages. It uses tags to define elements like headings, paragraphs, links, images, and forms that make up a webpage's content and layout. HTML Syntax HTML documents are structured ...
Read MoreDifference between REST API and SOAP API
Web services enable communication and data exchange between different machines over a network. The two most common approaches for building web services are REST (Representational State Transfer) and SOAP (Simple Object Access Protocol). REST is an architectural style, while SOAP is a formal protocol with strict standards. REST API REST (Representational State Transfer) is an architectural style that uses standard HTTP methods (GET, POST, PUT, DELETE) to interact with resources. REST APIs can exchange data in multiple formats including JSON, XML, HTML, and plain text. REST is lightweight, stateless, and widely used in modern web and mobile applications. ...
Read MoreDifference between Servlet and JSP
Both Servlets and JSP are used in web development. The Servlets handle the logic (processing our requests and interacting with databases), and JSPs handle the presentation (displaying dynamic content on the web page). By separating the logic and presentation, our web applications become more manageable and scalable. In brief, we can think of Servlets as Java programs that run on a web server. They work as the middle layer between a request from an HTTP client (like a browser) and databases or applications on the server. When we send a request to a server, the Servlet processes that request, and ...
Read MoreDifference between Apache Tomcat Server and Apache Web Server
Apache Software Foundation is the company that owns the Apache Tomcat Server and Apache Web Server. Apache Tomcat Server works as a container for Java Servlet and Apache Web Server is an HTTP server. Many users get confused between both of these servers. In this article, we will discuss the difference between Apache Tomcat Server and Apache Web Server. What is Apache Tomcat Server? Apache Tomcat is a server which works as a container for Java Servlets. Apache Tomcat Server was developed in 1998 and now it has become one of the best JavaScript web hosting solutions. It is also ...
Read MoreHow to Check Which Apache Modules are Enabled/Loaded in Ubuntu 16.04
Apache is an open supply program on hand without cost. It runs on 67% of all web servers. It is speedy, risk-free, and comfortable. It may be extremely custom-made to satisfy the wants of many one-of-a-kind environments via utilizing extensions and modules.To install apache, use the following commands-$ sudo apt-get update $ sudo apt-get install apache2 apache2ctlapcahe2ctl is a front end to the Apache HyperText switch Protocol (HTTP) server. It is designed to aid an administrator to control the functioning of the Apache HTTP daemon. To get the more information about apache2 modules, use the following command – $ man ...
Read MoreExplain the working of HTTPS
The basic protocol used to transmit data between a web browser and a website is HTTP, while HTTPS is the secure version of HTTP. To strengthen the security of data transport, HTTPS is encrypted. This is crucial when customers register into a bank account, email account, or health insurance provider and transfer sensitive data. HTTPS should be used on all websites, especially those that demand login information. Websites that do not employ HTTPS are marked differently than those which employ HTTPS. If you want to know whether a website is secure, look for a padlock in the URL bar. Google ...
Read MoreHow to Configure Nginx as Reverse Proxy for WebSocket
The WebSocket is a protocol which provides a way of creating web applications that supports real-time bi-directional communication between both clients and servers. WebSocket makes it much easier to develop these types of applications. Most modern browsers support WebSocket including Firefox, Internet Explorer, Chrome, Safari, and Opera, and more and more server application frameworks are now supporting WebSocket as well.For a production environment, where multiple WebSocket servers are needed for getting a good performance and high availability of the website or application, a load balancing layer which understands the WebSocket protocol is required, NGINX supports the use of WebSocket from ...
Read MoreHow to create HTTPS Server with Node.js?
As the consumption of the cyberspace and cloud-dependent applications proliferates, the gravity of safeguarding online data and transactions becomes more apparent. One of the most commonly employed methodologies for securing online communications is HTTPS, which provides an assurance that the information conveyed between the server and clients is ciphered and cannot be effortlessly intercepted by malevolent third parties. In this manuscript, we will probe into the process of building an HTTPS server with Node.js, an influential and adaptable platform for developing server-side applications using JavaScript. We will go over the fundamentals of SSL certificates, the essential components of an HTTPS ...
Read MoreDifference between Put and Patch Request
HTTP is an application layer protocol created to transport data between networked devices. In HTTP, a number of methods are accessible. These methods represent the CRUD (create, read, update, delete) operations, in that order. Some HTTP methods share a lot of the same traits. Therefore, before implementing these comparable HTTP methods in an HTTP system, we should thoroughly study them. For instance, there are similarities between the features of the PUT and PATCH methods that may cause confusion. Both are used to update a resource at a particular location. The following are some of the differences between them. What is ...
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