The computers are unable to understand human languages. So, it is very important to create programming languages to control commands in order to direct the computer to work accordingly. Any software does any kind of work automatically and perfectly without having people to do the task repeatedly through the programming languages which are of huge importance. The full form being Hypertext Transfer Protocol, HTTP is the kind of text which is specially coded with the help of one such standard coding language called HTML. The full form of HTML is Hypertext Mark-up Language.
There are various versions of HTTP but the original one was invented by Tim Berners Lee and his team at CERN. The full form of CERN is of the French origin- Conseil Européen pour la Recherche Nucléaire, also known as European Council for Nuclear Research. It was invented and developed in 1991. It is an IP based communication protocol. The full form of IP is Internet Protocol. It is basically the protocol for sending information from one device to another with the help of the Internet. Each computer has at least one IP address which is different from all the other computers on the Internet.
HTTP
The word ‘hypertext’ itself means a kind of software system which allows direct access of the information in the form of text and associated graphic material to the user from one device to another. This transfer is done with the help of protocol which means an entrenched set of rules used to allow the connected devices to communicate with each other without any differences in their internal processes transmitted through the same network.
Versions of HTTPs
There are six versions of HTTP till date-
- HTTP version 0.9
- HTTP version 1.0
- HTTP version 1.1
- HTTP version 2.0
- HTTP version 3.0
- HTTP/2
HTTPs
Being the very first version of HTTP, HTTP version 0.9 was introduced in 1991. RFC 1945 was introduced in 1996 into the HTTP version 1.0. The full form of RFC is Request for Comments. It is a memorandum written by various groups of engineers and computer scientists in the form of an epistle describing the various methods, behaviour and research related to the working of the internet and its parts.
RFC 2068 was introduced into HTTP version 1.1 in January 1997. RFC 2616 was introduced in June 1999 into HTTP version 1.1 for various improvements and updates. RFC 7540 was introduced into the http version 2.0 on May 14, 2015. Based on the same RFC 7540 draft, Google developed HTTP into the HTTP version 3.0 and renamed it as a Hypertext Transfer Protocol QUIC which is a transport layer network protocol. The full form of QUIC is Quick UDP internet connections. It was designed by Jim Roskind at Google. The full form of UDP is User Datagram Protocol which is a Communications protocol used to initiate low-latency and loss-tolerating connections between the applications on the Internet.
Being the latest version of HTTP, HTTP/2 was introduced in May 2015.
Role of HTTP
The establishment of communication is provided between a web browser and web server by the HTTP which is a set of rules for transferring information from one device to another. The information usually includes any kind of text images for other multimedia file shared on the WWW. The full form of WWW is the World Wide Web.
HTTP prompts an appeal to receive or transmit files over the Internet. For example, if you want to open any website, we first open a web browser and type the URL of that particular website. The full form being Uniform Resource Locator, this URL is then sent to DNS. The full form being Domain Name Server, the DNS first checks the records for the particular URL typed in their database and then it returns the IP address to the web browser related to that URL.
Features of HTTP
The connection between a new server and client is only during the current request and response period. When a client raises a request, only then the server processes it. Compatibility between the server and client helps exchange contents with each other. After the exchange of the data, there is no connection between the server and the client. On the basis of client and server requirements, HTTP is a request and response protocol. The protocol is devoid of connection since after the connection is closed neither the server nor the client remembers anything about each other. Being a stateless protocol, HTTP allows both the client and the server to communicate without expecting anything in return from each other.
Conclusion
The use of HTTP not only reduces the usage of memory but also the usage of CPU as because of less simultaneous connections. Although it requires high power for the establishment of communication and transfer of data, yet the network congestion is less. It applies less security because of no use of any encryption method. Until the client receives complete information from server, he or she does not close the connection. Thus, the server needs to wait for data completion and cannot help other clients during that time period.