HTTP Protocol: What is it, what is it for and what do its initials mean in computing and web pages?

Currently the HTTP protocol It is one of the best known and used worldwide. It is used by many websites that help make the navigation of each of the users much safer.

This is how most people are still unaware that their data is exposed every time they access the Internet and browse different web pages not sure That is why every time we visit sites like Gmail, Facebook, Twitter, Google, Youtube, among others, these portals use protocols HTTP for encrypt user data and make your a more secure connection.

According to all this, here we are going to explain a little more about what this model is about and what they are. its functions and characteristics main.

What is an HTTP protocol and what is its role in web browsing?

The HTTP protocol is currently considered one of the most important in the web world, it has been designed to transmit HTML (HyperText Markup Language) but today it is used to transmit any kind of documents, whether videos, audios, PDF, imagesamong others or for create web applications.

Therefore, it can be defined as a world wide web information transmission protocolwhich is the one that allows to establish a code for the requesting computer. The one that contains the information can create communication in the same language when transmitting any information through the network.

In this case, this model does not creates any record of previous visits, but each time a new one begins. Where he http is established through criteria of computer syntax and semantics, so that the establishment of communication between the different elements that make up the web can be generated.

What are the versions of the HTTP protocol and how do they differ?

This model has gone through different versions since its launch, where many of them are compatible with all of the above. Therefore, each of them describes the use of HTTP version numbers. That is how the client informs the server of the request and the version it uses so that the server uses the same or an older one that is compatible. In this way, here we present each of these versions.

Version 0.1

It was released in 1991 and which supports a single GET command. Also, does not specify the version number being usedeither supports POST or headers and the client cannot share much information with the server. The same is found currently obsolete.

HTTP/1.0

Is was created in 1996, it presented several improvements compared to 0.1, this being how it already allowed specify your version in the communication and is still in use today, especially for proxy servers. This is how it allows the request of GET, POST and HEAD.

HTTP/1.1

One of the most used today was created in 1999. It presents connections activated by default and they work correctly with the proxies. In addition, it gives the possibility clients sending multiple requests to the server for a single connection.

HTTP/1.2

It became one of the first 1995 drafts of the PEP document. Where the PEP was destined to become one of the main ranges of HTTP/1.2. But, this reference would end up being removed and is largely included measure to PEPall this ended up being created in the year 2000.

HTTP/2

By the year 2012 the first drafts of what was the new version of this model. But this would not modify application semanticsthat is to say, that all the basic concepts did not present any type of change, where the improvements were focused on package data and transport. However, all of this would be officially released for the year 2015.

HTTP/2.4.39

This has been the last version released for this model, this is how on April 2, 2019 this edition was released which presents MPM loads at runtime and which can be configured via LoadModule.

It has better support for reading and writinga setting of the level of LogLevel by module or directory, allows a reduced memory usage although it has many more features than 2.0, among many other tools that 2.4.39 offers to improve the user experience.

Description of HTTP What are its main characteristics?

East hypertext transfer protocolworks mainly for what is the transport of text files, graphic representations, video, images, sounds among other types of files world Wide Web. It is usually activated immediately after each user open your web browserthis is an application that is made with the TCP/IP protocol.

In this way, here we present what its main characteristics are:

They have no connection

The client every time start a browser sends a request where the consumer is isolated from the server and wait for a response. In this case the server reads the request and reset the consumer connection in order to send a reply.

independent of the media

Any data prototype can be sent over http as long as when the sender and receiver be aware of how to handle the content of the record. Therefore, the most common is that the consumer next to the receiver details the information using the correct mime.

no state

By not having any type of connection, this causes the protocol to not have A state. In this case the assistant and the consumer know each other only during a momentary attention, subsequently they are relegated to each other. Because of this, neither the browser nor the consumer they can stagnate information between the different services on the web pages.

HTTP architecture

This represents a request and response form in the architecture based on both the consumer and the server, where web browsers, robots and any other search enginesthey act as consumers where the web assistant as the receiver of the process.

Client

In this case the client sends you a request to the receiver, either URL and protocol translation, followed by this a very similar message is sent to me that will command said request, client research and a body content by means of a TCP/IP connection.

Server

Here the wizard recognizes a status line, where it includes the formalism version of the message and a symbol of success or failureall this is followed by a message to mime that commands the wizard information.

HTTPS: How is it better than the previous generation of hypertext transfer protocols?

HTTP or HTTPS have a very clear difference and it is visible to all, and it is that particular “S” at the end. But what can this additional letter mean that differentiates them. In this case it is indicating that it is the secure version of HTTPwhere the “S” refers specifically to the fact that it has an additional protocol that works in conjunction with the HTTP called Secure Sockets Layer.

All this allows to execute a transmission of encrypted information on the Internetwhich makes it much safer, since hide personal data leaving only visible the server and the port.

Therefore, the HTTPS is the one that prevents third parties from accessing the websites that we access from the computer, in the same way protect personal data, What card codes, users, passwords, among others. This model is mainly responsible for performing electronic commerce or e-commerce transactions.

More and more continues to be incorporated by more websites in order to provide greater security to each of the users. This is how the largest platforms like Google, Facebook, Twitteramong others, have already integrated them into their systems.

What are the request methods of the hypertext transfer protocol?

This model defines a request method string that can be used to enhance your experience. In addition, it has a flexibility that allows you to go adding new methods so add new features and functions. This is how this has been increasing as new versions come out, where each one of them indicates an action that you want to be carried out.

That is why here we present the main request methods:

GET

GET allows you to request a representation of the specified resource. Therefore, requests using this request should only Recover data and must not generate any other effect during their participation.

HEAD

Usually ask for a response identical to the one that would correspond to a GET request, but in said response the body is not returned. Thus, it is used for retrieve header methods of the answers without having to carry all the information.

PUT

It is mainly used for upload, upload or perform an upload of a file or file. It is considered today as one of the most efficient paths since it allows writing a file in a socket connection established with the server.

POST

In this case it is used for send data that is processed by the identifier resource. All of this data is included in the request body and can become a creation of a new resource or updates to resources.

DELETE

It allows delete resources specified.

TRACE

TRACE is responsible for requesting the server to enter in each of the responses all the data received by the server. message on request. This method is mainly used with debugging purposes and diagnosis since the client can see what arrives at the server and in the same way see everything that is added to the intermediate messages.

OPTIONS

is responsible for returning HTTP methods that the server supports for a Url address in specifies. It is typically used to check the functionality of a web server.

CONNECT

It is primarily used to determine if you have access to a host under special conditions.

PATCH

In terms of its operation, it is the same as PUT, therefore it is used for partially update one or more parts of the resources and it is also oriented for proxy use.