What does the client mean and what does it do

In the computer world, the party that provides the service is called the server, and the other party that receives the service is called the client. The most common example we come across is the printing service provided by the print server in the local area network: the computer that provides the print service, we can say that it is the print server; The other party that uses the print server to provide print services is called the client.

However, who is the client and who is the servo is not absolute, for example, if the servo that originally provided the service wants to use the service provided by another machine, the role played by the client will be changed.

And this relationship on the Internet becomes the relationship between the user and the user. Users can access the Internet through a modem or other device, type ** into the browser, and request to ** through the HTTP communication protocol. **After receiving a request from the user, the data of the web page that the user wants to view is transmitted to the user, and this action is called response.

** provides web page data services, the user accepts ** the data services provided; Therefore, the user is the client here, and the ** that responds to the user's request is called the servo side.

However, the relationship between the client and the servo is not necessarily based on two separate machines, and there is also such a master-slave relationship in the same machine. For example, if we browse the web page provided by the server on which the web page is provided, we can act as both the server and the client on the same machine.

It is a relative noun, for example, if you surf the Internet in an Internet café, then your machine is the client, and the machine of the Internet café owner is the client.

A client is a program that corresponds to a server and provides local services to customers.

Except for some applications that only run locally, they are generally installed on common clients and need to run in conjunction with the server. After the development of the Internet, the more commonly used users include web browsers used on the World Wide Web, e-mail clients for sending and sending e-mails, and client software for instant messaging.

For this kind of application, there need to be a corresponding server and service program in the network to provide corresponding services, such as database services, e-mail services, etc., so that a specific communication connection needs to be established on the client and server side to ensure the normal operation of the application.