Whether you realize it or not, HTTP is one of the important components that cannot be separated from your activities while on the internet. Starting from browsing various websites, sending files, or watching videos, you can only start with accessing HTTP.
Then actually, what is HTTP? And what about the HTTP example and how does it work? Let’s see more in the following article!
What is HTTP?
Hypertext Transfer Protocol or HTTP abbreviated is an application layer network protocol that is used to assist the process of exchanging data on the internet between computers with one another.
The data can be in the form of files, images, or videos. This protocol uses hypermedia linked by links called hypertext documents that make up the WWW or World Wide Web.
HTTP is a protocol that provides commands in communication between networks, where this is a client computer with a web server. Later, the client computer will make a request by accessing the domain URL and IP address.
Then the request will be managed or executed by the web server according to the code entered.
The HTTP protocol is designed to manage HTML documents and send them to clients, which is why the following protocols are the most widely used compared to other protocols.
In addition, the HTTP protocol is a fairly flexible protocol and until now developers are still developing it by adding new features. That way, HTTP can be the most reliable and fastest protocol in the data transmission process.
Also read: What is a Domain? Understand the Definition, Functions, and Types
History HTTP protocol was first used around 1990 by a British physicist named Tim Berners Lee. At that time, the HTTP protocol used could only carry out data transfers by sending raw data and could not see the type of document, which was version 0.9.
In 1996, the HTTP protocol evolved into the HTTP version 1.0 protocol. Then in 1999 HTTP version 1.1 was issued to accommodate proxy, cache and persistent connections.
HTTP is a client server-based application protocol which in its development is built on the basis of TCP (Transmission Control Protocol).
An HTTP client or also known as a user agent usually initiates a request by establishing a connection to a specific port on the web hosting server. Then the web server responds and saves the resource, this is called the origin server.
Between the user agent and the origin server there may be something that bridges, for example a gateway, tunnel and proxy.
Next, the resource you want to access with HTTP will be identified using a URL ( Uniform Resource Locator ) using the http: or https: URL scheme.
Please read the following.
- What Is Proxy: Definition, Benefits, Types and How It Works
- What Is Gateway, Its Functions, and How It Works on the Network
Difference between HTTP and HTTPS
At first glance, HTTPS and HTTP may look the same, but upon closer inspection, they are actually different. The differences between HTTPS and HTTP are as follows.
1. Data Transmission Security Level
The main difference between HTTPS and HTTP is the level of security. HTTP is a protocol that does not fully guarantee the security of data transmission between server and client, while HTTPS is the opposite. This is because HTTPS uses the SSL or Secure Socket Layer protocol.
Please note, the letter ‘S’ in HTTPS means secure. That’s why you usually see a website has a lock icon to the left of its URL. SSL is very useful for confidential and important data.
HTTPS is widely used on banking sites, e-commerce, registration forms, and other business areas that often experience eavesdropping from third parties. Therefore, SSL certification is needed to ensure the security of data transmitted by clients.
In maintaining its security, HTTPS considers three aspects, namely server authentication, data confidentiality, and data integrity. Server authentication is useful for verifying that a client knowingly requested the data by communicating with the destination server.
The data is confidential and cannot be penetrated by other parties because it has gone through the encryption process.
That way, there is data integrity because it has been validated by the Message Authentication Code or MAC.
2. Port Used
The next difference from HTTPS and HTTP is the port used. HTTP itself by default uses port 80, while HTTPS uses port 443.
Has it ever occurred to you, what is the actual function of HTTP?
Actually, the function of HTTP is to regulate the format and how the data is transmitted. In addition, this protocol also regulates how web servers and browsers manage various incoming orders.
For example, when you enter a URL into the browser. The URL is considered as a command to the web server. Then, the web server will manage the URL you entered to provide data according to your request. The result is a web page that appears via a web browser on a computer screen.
Meanwhile, another function of HTTP is to protect your data from the threat of hackers and data theft. This is evidenced by the existence of the HTTPS protocol which promises more security than HTTP, even though its function is the same.
Please read the following.
- Local Area Network (LAN) Definition, Functions, and Examples
- How to Fix DNS Server Isn’t Responding On Windows 10
How HTTP Works
How HTTP works is inseparable from how web applications work. In short, how HTTP works is as follows, friend.
- The HTTP client establishes a connection, then sends a document request to the web server.
- As long as the HTTP server processes the client request, the HTTP client waits for a response.
- After processing, the web server answers the request with a data status code, then closes the connection.
In essence, the way HTTP works is that the client first requests data to the server, then the server sends a response in the form of an HTML file or other data requested by the client.
Meanwhile, HTTPS works using a sub layer in the form of SSL or TLS, of course it is different from HTTP which has a regular application layer. Therefore, HTTPS is often referred to as a combination of HTTP and SSL/TLS.
Well, now you know what HTTP is, including its history, functions, how it works, and how it differs from HTTPS? Hopefully this review can help you understand the ins and outs of internet protocols, friend!
If you still want to know other interesting information, just read the other IsTalkingTech’s article below!