Currently the HTTP protocol is one of the best known and used worldwide. It is used by many websites that help make each user’s navigation much safer.
This is how most people still do not know that their data is exposed every time they go to the Internet and browse different websites not secure. That’s why that 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 connection a more secure .
According to all this, here we are going to explain a little more about what this model is about and what are its main functions and features .
Index:
The HTTP protocol is currently considered one of the most important in the web world, it has been designed to transmit HTML (HyperText Markup Lenguage) but today it is used to transmit any type of documents, either videos, audios, PDF, images , among others or to create web applications .
Therefore, it can be defined as a World Wide Web information transmission protocol , which is what allows you to establish a code so that the computer applicant. The one that contains the information can create a communication in the same language when transmitting any information through the network.
In this case, this model does not create any type of record of previous visits, but every time a new one begins. Where the http is established through criteria for 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 previous ones . Therefore, each of them describes the use of HTTP version numbers . This is how the client informs the server of the request and the version it uses for the server to use the same or a previous one that is compatible. In this way, here we present each of these versions.
Version 0.1
It was launched in 1991 and which supports a single GET command . Also, does not specify the version number that is being used , nor does support POST or headers and the client cannot share much information with the server. It is currently obsolete .
HTTP / 1.0
This was created in 1996, it presented several improvements compared to 0.1, which is how it allowed to specify its version in the communication and is currently still in use, especially for proxy servers . This is how it allows the request of GET, POST and HEAD .
HTTP / 1.1
One of the most used currently and was created in 1999 . It has connections activated by default and works correctly with the proxys . In addition, it gives clients the ability to send multiple requests to the server over a single connection.
HTTP / 1.2
It became one of the first drafts of 1995 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 eliminated and is included in a large measure to PEP , all this ended up being created in 2000 .
HTTP / 2
For 2012, the first drafts of what was the new version of this model began to appear. But, this would not modify the application semantics , that is, that all the basic concepts did not present any type of change, where the improvements were focused on packaging data and transport . However, all this would be officially launched for the year 2015.
HTTP / 2.4.39
This has been the latest version released by this model, this is how on April 2, 2019 this edition was released which presents MPM loads at runtime and which can be configured through LoadModule .
It has better support for reading and writing , a configuration of the level of LogLevel by module or directory, allows a reduction of 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?
This hypertext transfer protocol , works mainly for what is the transport of text files, graphic representations, video, images, sounds among other types of files from World Wide Web . It is usually activated immediately after each user opens their web browser , this is an application that is made with the TCP / IP protocol .
In this way, here are the main features:
They have no connection
The client every time starts a browser sends a request where the consumer isolates itself from the server and awaits a response. In this case the server reads the request and replenishes the connection to the consumer in order to send a reply.
Independent of the media
Any prototype data can be sent by http provided and when the sender and receiver are aware of how to handle the content of the background. Therefore, the most common is that the consumer next to the receiver details the information using the correct MIME .
No status
By not having any type of connection, this causes the protocol to also not have a state. In this case the assistant and the consumer know only during a momentary attention, then they relegate each other. Because of this, neither the browser nor the consumer can stall 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 engine , They act as consumers where the web assistant as the recipient of the process.
Client
In this case the client sends a request to the receiver, either URL and protocol translation, followed by a very similar message to MIME that will command such request, customer investigation and body content through a TCP / IP connection.
Server
Here the wizard recognizes a status line, which includes the version of the message formalism and a success or error symbol , all this is followed by a message to MIME > that commands the information of the assistant.
HTTPS: How does it improve the previous generation of transfer protocols for hypertext?
HTTP or HTTPS have a very clear difference that is visible to everyone, and it is that particular “S” at the end . But what can this additional letter mean that sets them apart. In this case it is indicating that it is the secure version of HTTP , where the “S” specifically refers to having an additional protocol that works in conjunction with the HTTP called Secure Sockets Layer .
All this allows to execute a encrypted information transmission on the Internet , which makes it much more secure, since hides personal data leaving only the server visible and the port.
Therefore, HTTPS is one that prevents third parties from accessing the websites that we access from the computer, in the same way protects personal data, such as card codes, users, passwords , among others. This model is primarily responsible for conducting e-commerce or e-commerce transactions .
More and more is still incorporated by more websites in order to provide greater security to each of the users. This is how the biggest platforms like Google, Facebook, Twitter , among others have already integrated them into their systems.
What are the request methods of the hypertext transfer protocol?
This model defines a series of request methods that can be used to improve your experience. In addition, it has a flexibility that allows to be added by adding new methods in order to add new features and functions . This is how this has been increasing as new versions come out, where each one indicates an action that is desired 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 that use this request should only recover data and should not generate any other effect during their participation.
HEAD
Generally, it requests a response identical to that corresponding to a GET request, but in that response the body is not returned. That way, it is used to retrieve the header methods of the responses without having to transport all the information.
PUT
It is mainly used to upload, upload or upload a file or file. It is considered today as one of the most efficient paths because it allows you to write a file on an established socket connection with the server.
POST
In this case it is used to send data that is processed by the identifier resource. All this data is included in the request body and can become a creation of a new resource or resource updates.
DELETE
Allows to delete the specified resources .
TRACE
TRACE is responsible for asking the server to enter in each of the responses all the data received by the message in the request . This method is mainly used for debugging purposes and diagnosis since the client can see what reaches the server and in the same way see everything that is added to the messages intermediate.
OPTIONS
It is responsible for returning the HTTP methods that the server supports for a specific URL . It is usually used to check the functionality of a web server.
CONNECT
It is mainly used to determine if you have access to a host under special conditions.
PATCH
As for its operation it is the same as PUT, therefore, it is used to partially update one or more parts of the resources and is also oriented for proxy use.