What are the limitations of the HTTP protocol?

The HTTP protocol is a text-based protocol, which is not conducive to computer parsing and processing, and greatly increases the bandwidth of network data. Second, the HTTP protocol is a stateless protocol, which makes it extremely troublesome to process the state in the business scenario of data. Then the HTTP protocol uses the HTML language to format and display the web page, the HTML language is a text-based description language, which has a large amount of data redundancy when the computer transmits, and the update and display of local data are also correspondingly complex.

Finally, the interaction and control ability of rich content in the HTTP protocol is much weaker than that of the direct C S side, which is not conducive to the development and expansion of complex computing services.

The HTTP protocol is used to transfer hypertext from the www server to the local browser. It can make the browser more efficient and make the network transmission less. It not only ensures that the computer transmits the hypertext document correctly and quickly, but also determines which part of the document is being transferred and which part of the content is displayed first (e.g., text before graphics), etc.

HTTP is an application-layer communication protocol between a client's browser or other program and a web server. The web server on the Internet stores all hypertext information, and the client needs to transmit the hypertext information to be accessed through the HTTP protocol.

HTTP contains command and transmission information, which can be used not only for web access, but also for communication between other Internet intranet application systems, so as to realize the integration of various application resources with super access.

The address we type into the address bar of our browser is called a URL (Uniform Resource Locator). Just as every home has an address, every web page has an Internet address.

The main features of the HTTP protocol can be summarized as follows:

Hypertext Transfer Protocol (HTTP) is one of the most widely used network protocols on the Internet. All www files must comply with this standard. HTTP was originally designed to provide a way to publish and receive HTML pages.

The rules, standards, or conventions established for the purpose of exchanging data in a network are called network protocols. It is mainly composed of syntax, semantics, and synchronization (which refers to the detailed description of the order in the event implementation). The communication protocol has hierarchical characteristics, and most of the network organizations are organized in the way of layers or levels, and the upper layer is established on the basis of the next layer, and the purpose of each layer is to provide certain services to its upper layer, and the details of how to realize this service are screened to the previous layer.

The network protocol determines the format of the exchanged data and the associated synchronization issues.

First, in terms of security:

HTTPS is the most secure network transmission protocol in today's network technology. The HTTPS protocol is a network protocol built by SSL+HTTP protocol, which is more secure than HTTP. It can authenticate users and servers to ensure that data is sent to the right customers, and to prevent data theft and alteration during transmission, ensuring data integrity.

But it's not that the https protocol isn't attacked at all, it's just that if someone attacks you, the cost is higher.

After the https protocol is more secure, the evaluation of ** will be relatively high, and the landing page experience of ** can also be more high-quality. Such a user experience works better.

To sum up: HTTPS can increase the user's experience more.

Fourth, summary:

Since there are so many benefits of the https protocol, it is impossible not to have disadvantages. There are no such things or things as extremely good (extremely evil) people in the world.

The disadvantages of the HTTPS protocol over the HTTP protocol are:

1. SSL certificate may cost a certain fee.

The HTTPS protocol requires an SSL certificate, and some of the powerful SSL certificates require a certain cost of calls, and the more powerful the function, the higher the cost. Of course, it's not that there is no free SSL certificate, like the author's blog** is a free certificate used, compared to the paid SSL certificate, the free SSL certificate is not very powerful, but mosquito meat is also protein, isn't it.

Second, the installation of HTTPS requires technology.

3. Summary. The disadvantage of the HTTPS protocol is that you need to be careful in installation, after all, when you buy an SSL certificate, you are a consumer, as long as you want to remember to back up the SSL certificate when you want to install it.

.The HTTPS protocol encrypts the transmitted data to avoid attacks such as sniffing.

Difference Between https and http:

1. HTTPS is an encrypted transmission protocol, and HTTP is a plaintext transmission protocol;

2. SSL certificate is required for HTTPS, but not for HTTP;

5. HTTPS is based on the transport layer, and HTTP is based on the application layer;

6. https shows a green security lock in the browser, but http does not display;

In general, HTTPS is more secure than HTTP, which can effectively protect the privacy information security of users, which is why there are more and more HTTPS now.

Advantages and disadvantages of https and http:

Advantages: HTTPS is more secure than HTTP; More conducive to SEO;

Cons: https comes at a cost; Implementation requires a technical foundation; Not compatible with some plugins;

Speaking of the http protocol. It's used by almost all webs nowadays. HTTP is simple and easy to use.

But the most lethal thing is that you can't make a long connection. Although WebSocket is supported in all major browsers today, the results are generally not very good. There are also many users who use browsers that don't support or have js disabled.

And the reason why we want to mention long connections is the biggest pain of HTTP. It is because if the traffic is very large, it will be a great waste of time and efficiency to pass the same data repeatedly. Imagine refreshing the page every time.

The browser requests the server once. In this case, a lot of the data was unnecessary. It is necessary for all HTTP to support persistent connections.

Deep? The little brother gave you an answer.

1.Support for client-server mode.

2.Simple and fast: When a customer requests a service from the server, they only need to transmit the request method and path. Commonly used request methods include, and post. Each method specifies a different type of contact between the customer and the server.

Due to the simplicity of the HTTP protocol, the program size of the HTTP server is small, so the communication speed is very fast.

3.Flexible: HTTP allows the transfer of any type of data object. The type being transferred is marked by content-type.

4.No connection: No connection means limiting each connection to only one request per connection. Once the server has processed the customer's request and received a response from the customer, it disconnects. In this way, you can save transfer time.

5.Stateless: The HTTP protocol is a stateless protocol.

Stateless means that the protocol does not have the ability to remember transactions. The lack of state means that if the previous information is needed for subsequent processing, it must be retransmitted, which can result in an increased amount of data being transferred per connection. On the other hand, it responds faster when the server does not need previous information.

The main features of the HTTP protocol can be summarized as follows:

1. Support client-server model. Edition.

2 is simple and fast: the right to service.

Transfer documents between the browser and the server.

This is a lot of detail.

In simple words, it is a standard, a standard that all ** web pages must meet, with this standard, all web pages are unified before we can use the browser to see the web page, so we can't see the web page that does not meet this standard, and the browser can't recognize it normally.

HTTP is a plaintext transmission protocol, and the data is transmitted in clear text, which is equivalent to providing the username and password of the login interface to a third party, and will be stolen if the user enters the username and password. Of course, in addition to data security risks, the HTTP protocol also has protocol hijacking, which will cause users to open the site and jump directly to phishing**. http will also be injected by hackers with malicious intent, resulting in various bad information popping up directly.

Major browsers will mark HTTP sites as "insecure**", so why do you require the whole network to upgrade the HTTPS protocol?

HTTP is easy to be hijacked by the network and cause users to be deceived, HTTPS is a relatively secure protocol at present, it is recommended to upgrade HTTPS