Today almost everyone uses the Internet. Whenever you would have opened a browser to search for something through the Internet, you would have seen some words, HTTP and HTTPS in the address bar of the browser. Looking at these words, the question must have arisen in your mind that what is HTTP or what is HTTPS? What is the difference between HTTP and HTTPS?

If you want to know what is HTTP, then read this post carefully. In this post, we will explain in detail about HTTP and HTTPS.

Whenever you open a website in your browser, the first part of the URL is HTTP or HTTPS. So we can say that whatever we are seeing on the website is reaching us through HTTP.

You must have seen that not Secure with HTTP and Green Lock Symbol and Secure is written with HTTPS , today in this post we will also talk about why HTTPS is secure. Here you also get confused by seeing that why the addresses of different websites are not on different formats. To get the answer of all these questions let’s start and know what is HTTP?

What is HTTP

HTTP is a type of Internet Protocol whose full name is Hypertext Transfer Protocol . It is a protocol that accesses data on the World Wide Web. It is a computer communication protocol used for communication on the web around the world.

A protocol is a set of rules that actually operate the client/server between your web browser and the web page. As the name suggests, this HTTP is a text transfer protocol, so whatever we see on any website, we are able to see it through Http only.

As I mentioned earlier, HTTP is written before the address of a website (eg http://www.abc.com). When transferring any type of data such as text, audio, video, image etc. between a browser and a server, they have to follow certain rules and these rules are set by the HTTP protocol. Through the protocol, it is determined how the format and transmission of the data to be transferred will be and the response of the browser and the server to various commands.

How does HTTP work?

As I already mentioned that HTTP is a communication protocol. It makes communication between client and server. When a client requests a website server, HTTP accepts that request and establishes communication between the client and the server through TCP. Then HTTP sends a request to the server, all the files are stored in the server. From here HTTP pulls the requested information and passes it to the client.

HTTP Error Code

HTTP error code is the response sent by the client to the server’s request. For example, when your client (your web browser) tries to connect to the server. These responses include Redirect, Server Error, Client error etc. HTTP error codes are not related to the web page, instead, they are the responses received from the server on how to process the request.

7 Most Common HTTP Error Codes

1. 401 Unauthorized

401 unauthorized is the first error code on our list. 401 error indicates that the server has received an unauthorized request. When this error occurs, the system displays a message stating that the page cannot be loaded due to invalid credentials for various reasons.

2. 404 not found

404 not found is a common HTTP error code on the Internet. This HTTP response will be generated when the page the user is looking for is not found on the server. There can be many reasons behind 404 error. Maybe because the webmaster didn’t create the page or the URL you entered is wrong (because it’s a client error).

3. 500 internal server error

500 internal server error is a common error, it arises when there is a problem with your server. There are many different reasons for this, including WordPress plugins, PHP, databases, etc.

4. 502 Bad Gateway

Unlike other HTTP error codes, 502 is different. When a server on the Internet receives an invalid response from another server, a bad gateway error occurs. When the server takes longer than expected to complete the request, a 502 HTTP status code will appear on the screen.

5. 301 Moved Permanently

HTTP 301 Error moving a specific web page to another URL permanently. This is not an error in itself, but it does convey important information. This can be at the page level where you can point to another similar post (or even the homepage) or domain at that page level. In simple words, any webpage is called Permanently Redirect 301 Redirect to any other URL.

6. Discovery 302

It is similar to HTTP Status code 301 but used for temporary redirection. This response tells Google that the page has been temporarily redirected and will revert to the original URL at some point. If done correctly, it will redirect the user to another URL in a few seconds.

7. 410 went

This 410 Gone error is similar to 404 error. Think of it as Permanently 404. When webmasters decide to permanently delete a post or page or to restore it on another site, they can use this code.
The 410 response informs Google that the requested resource has been permanently removed from the Internet and will not reappear. In this way, you can easily crawl or index web pages from Google.

Why isn’t HTTP Secure?

If you are seeing the “Not Secure” warning, it is because the web page or website you are visiting is not providing a secure connection. If you are using these websites for any transaction etc. then you should avoid these websites.

Refrain from logging in here, providing personal information or providing payment information. Browsing such unsecured sites can put you at risk. Not secure warning indicates the lack of security for connection to that page. It is alerting you that the information sent and received with that page is unsafe.

It can potentially be stolen, read, or modified by attackers, hackers, and entities through access to the Internet infrastructure, such as Internet Service Providers (ISPs) and governments.

HTTPS Kya Hai | What is HTTPS

The full name of HTTPS is Hyper text transfer protocol secure. This is the Secured version of HTTP. The HTTPS protocol uses SSL (Secured socket layer) and TLS (Transport layer security) protocols for encrypted transmission and identity authentication. It mainly uses Digital Certificate, Encryption Algorithm, Asymmetric Key and other technologies to complete the Internet data transmission security to achieve Internet transmission security.

It communicates data in an encrypted form unlike HTTP. The relation of HTTPS is only between the client and the server, the data cannot be read by any other person between them. To receive HTTPS, both the client and the server have to verify their identity so that it can be proved that the identity of the person who is communicating is real or not.

HTTPS is used in security-sensitive communication on the World Wide Web such as transactions, payments. It has three main goals:-

Data confidentiality: To ensure that the data will not be viewed by any third party during transmission. Like the delivery of a package by a courier, all packages are packed, and others may not know what is inside. Data integrity:
Checking from time to time whether the data has been tampered with by any third party. Data Authentication: Here the client and the server have to verify their own identity. Just like when we mail a package, even though it is a packaged package that has not been changed, it must be ensured that the package will not be sent to the wrong place, and Data Authentication is used to ensure that that it has been sent to the right place.

How does HTTPS work?

HTTPS also works in the same way as HTTP, the only difference here is that through HTTPS all the data is encrypted and transferred from server to client. It works on the concept of cryptography. Cryptography is an encryption method through which plain text is converted into an unreadable format. Because of this, apart from the authorized user, no third party, hackers etc. can read the information.

What is the difference between HTTP and HTTPS?

The main differences between HTTPS and HTTP are as follows:
1. The full form of Http is Hypertext Transfer Protocol. Whereas the full form of https is Hypertext Transfer Protocol Secure.

2. Http URLs start with http:// while https URLs start with https://.

3. HTTPS works on SSL certificate for which certification authority is required to apply. Whereas no certificate is required for HTTP.

4. HTTP is a hypertext transmission protocol, where information is transferred in plain text, and https is a secure SSL encrypted transmission protocol.

5. HTTP and https use completely different connection methods and use different ports. HTTP uses 80 ports and HTTPS uses 443 ports.

6. HTTP connection is very simple and stateless; The HTTPS protocol is a network protocol designed for encrypted transmission and identity authentication by the SSL + HTTP protocol, which is more secure than the HTTP protocol.