HTTP protocol is mainly used for: 1. The client establishes a connection with the server; 2. The client makes a request to the server; 3. The server accepts the request and returns the corresponding file as a response according to the request; 4. The client and the server close connect.
The main functions of HTTP protocol:
1. The client establishes a connection with the server;
2 , The client makes a request to the server;
3. The server accepts the request and returns the corresponding file as a response according to the request;
4. The client and server close the connection.
Characteristics of HTTP:
1. HTTP is a stateless protocol, that is, the server does not retain any state during transactions with clients. This greatly reduces the memory load on the server, thereby maintaining a faster response speed.
2. HTTP is an object-oriented protocol. Allows the transfer of data objects of any type. It identifies the content and size of transmitted data through data type and length, and allows compressed transmission of data.
Extended information
The role of http proxy:
1. Break through your own IP access restrictions and visit foreign countries site. For example, Internet users such as Education Network and 169 Network can access foreign websites through proxies.
2. To access internal resources of some units or groups, such as FTP of a university (provided that the proxy address is within the allowed access range of the resource), you can use the free proxy server in the address segment of the education network. Various FTP download and upload services open to the education network, as well as various data query and sharing services.
3. Hide real IP: Internet users can also use this method to hide their IP and avoid attacks.
For more related knowledge, please visitPHP Chinese website! !
The above is the detailed content of What is the HTTP protocol mainly used for?. For more information, please follow other related articles on the PHP Chinese website!