http protocol belongs to the application layer. The http protocol specifies what messages a client may send to the server and what responses it may receive. The application layer is also called an application entity, which consists of several specific application service elements and one or more common application service elements.
What layer does http belong to?
http is the transmission protocol, and the HTTP protocol belongs to the application layer. An application that communicates with other computers, which corresponds to the communication service of the application. [Recommended tutorial: HTTP video tutorial]
The communication protocol adopts a 4-layer hierarchical structure. Each layer calls the network provided by the next layer to complete its own needs. . These 4 layers are:
1. Application layer: The layer for communication between applications, such as Simple Email Transfer (SMTP), File Transfer Protocol (FTP), Network Remote Access Protocol (Telnet), Hypertext Transport Protocol (HTTP), Extensible Communication and Presentation Protocol (XMPP), etc.
2. Transport layer: In this layer, it provides data transmission services between nodes, such as Transmission Control Protocol (TCP), User Datagram Protocol (UDP), etc. TCP and UDP are added to the data packet Transmit data and pass it to the next layer, which is responsible for transmitting the data and ensuring that the data has been delivered and received.
3. Interconnection network layer: Responsible for providing basic data packet transmission functions so that each data packet can reach the destination host (but does not check whether it is received correctly), such as Internet Protocol (IP).
4. Network interface layer: Management of actual network media, defining how to use actual networks (such as Ethernet, SerialLine, etc.) to transmit data.
The above is the detailed content of Which layer does the http protocol belong to?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Chinese version
Chinese version, very easy to use

SublimeText3 Mac version
God-level code editing software (SublimeText3)

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

Dreamweaver Mac version
Visual web development tools

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool