search
HomeCommon ProblemWhat does UDP protocol mean?
What does UDP protocol mean?Aug 08, 2023 pm 03:43 PM
udp

UDP is a connectionless transport layer protocol that provides a way to send data packets to the network, but it does not guarantee the reliability, sequence and integrity of the data packets, nor does it provide Congestion control and flow control functions. Characteristics of UDP: 1. No connectivity, no need to establish a connection before sending data, data packets can be sent directly to the target host; 2. High efficiency, the header overhead is small, only 8 bytes; 3. Unreliability, It does not provide the reliability of data packets. After the data packet is sent, it will not be resent even if it is lost, nor does it guarantee the order of the data packets, etc.

What does UDP protocol mean?

#The operating environment of this article: Windows 10 system, Dell G3 computer.

UDP (User Datagram Protocol) is a connectionless transport layer protocol. It is a simple and unreliable data transmission protocol based on the IP protocol. UDP provides a way to send data packets to the network, but it does not guarantee the reliability, sequence, and integrity of data packets, nor does it provide functions such as congestion control and flow control.

The characteristics of UDP protocol are as follows:

No connectivity: UDP does not need to establish a connection before sending data, and the data packet can be sent directly to target host, reducing the overhead of establishing and disconnecting connections, and improving transmission efficiency.

Efficiency: UDP’s header overhead is small, only 8 bytes, which is smaller than TCP’s 20-byte header overhead. Therefore, UDP is more efficient when transferring large amounts of data.

Unreliability: UDP does not provide reliability of data packets. After the data packet is sent, it will not be resent even if it is lost, and the order of the data packets is not guaranteed. This makes UDP more suitable in application scenarios where real-time requirements are high and losing some data packets will not affect the overall transmission effect.

Suitable for broadcast and multicast: UDP supports sending data packets to multiple destination addresses, suitable for broadcast and multicast scenarios, such as real-time transmission of video and audio.

Quickness: Because UDP does not need to wait for a connection to be established, the data packet can be sent to the target host immediately, so UDP has a low delay and is suitable for applications with high real-time requirements.

UDP protocol is mainly used in the following scenarios:

Applications with high real-time requirements: UDP is suitable for applications with high real-time requirements , such as real-time transmission of audio and video. Although UDP does not guarantee the reliability and sequence of data packets, in real-time applications, some lost data packets will not have a major impact on the overall transmission effect.

DNS (Domain Name System): UDP is often used for DNS queries because DNS queries usually require only short request and response messages and need to be completed quickly.

DHCP (Dynamic Host Configuration Protocol): UDP is also commonly used for communication between DHCP servers and clients. DHCP is used to dynamically allocate IP addresses and other network configurations.

Games and streaming media: UDP is suitable for online games and streaming media applications, such as live video broadcast, real-time interaction of online games, etc. In these applications, real-time and low latency are key, while reliability can be guaranteed through other mechanisms at the application layer.

Although UDP provides a simple and efficient data transmission method, due to its unreliability, it is more commonly used for some applications that require higher data reliability, such as file transfer and email. TCP protocol to ensure reliable transmission of data.

The above is the detailed content of What does UDP protocol mean?. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
udp端口号有哪些udp端口号有哪些Feb 23, 2023 pm 02:00 PM

UDP常用端口号有53、69、161、2049、68、520。UDP使用端口号为不同应用保留各自数据传输通道:1、网络文件系统(NFS),端口号为2049;2、简单网络管理协义(SNMP),端口号为161;3、域名系统(DNS),端口号为53;4、简单文件传输系统(TFTP),端口号为69;5、动态主机配置协议(DHCP),端口号为68;6、路由信息协议,端口号为520等。

如何使用PHP和UDP协议实现异步通信如何使用PHP和UDP协议实现异步通信Jul 30, 2023 pm 07:31 PM

如何使用PHP和UDP协议实现异步通信在现代的互联网应用中,异步通信已成为了一种非常重要的方式。通过使用异步通信,可以在不阻塞主线程的情况下,实现并发处理用户请求,提高系统的性能和响应速度。而PHP作为一种流行的后端编程语言,如何使用UDP协议实现异步通信呢?本文将介绍如何在PHP中使用UDP协议实现简单的异步通信,并附上具体的代码示例。一、UDP协议简介U

Java网络编程如何使用UDP进行无连接通信?Java网络编程如何使用UDP进行无连接通信?Apr 15, 2024 pm 12:51 PM

UDP(用户数据报协议)是一种轻量级的无连接网络协议,常用于时间敏感的应用程序。它允许应用程序在无需建立TCP连接的情况下发送和接收数据。示例Java代码可用于创建UDP服务器和客户端,服务器监听传入数据报并响应,客户端发送消息并接收响应。该代码可用于构建聊天应用程序或数据收集系统等实战案例。

如何分析UDP协议如何分析UDP协议May 12, 2023 pm 02:49 PM

一、套接字(socket)套接字socket:ip地址+port端口号。在TCP/IP协议中,它唯一标识网络通讯中的一个进程。套接字用来描述网络连接的一对一关系。TCP/IP协议规定,网络数据流应采用大端字节序,即(内存)低地址高字节(数据)。二、UDP_SOCKET相关UDP协议----用户数据报协议(面向非连接)---SOCK_DGRAMh表示host,n表示network,l表示32位长整数,s表示16位短整数。IPv4地址格式定义在netinet/in.h中,IPv4地址:sockadd

udp提供面向什么的传输服务udp提供面向什么的传输服务Feb 27, 2023 am 10:20 AM

udp提供面向“无连接”的传输服务。UDP中文名是用户数据报协议,是OSI参考模型中一种无连接的传输层协议,提供面向事务的简单不可靠信息传送服务;UDP为应用程序提供了一种无需建立连接就可以发送封装的IP数据包的方法。

为什么DNS使用UDP而不是TCP详解!为什么DNS使用UDP而不是TCP详解!Mar 01, 2024 pm 08:16 PM

DNS(DomainNameSystem)使用UDP(UserDatagramProtocol)而不是TCP(TransmissionControlProtocol)的主要原因是出于性能和效率的考虑。下面详细解释为什么DNS选择使用UDP协议:小型请求和快速响应:DNS查询通常是小型请求,仅需要几个字节的数据传输。UDP是无连接的协议,它不需要在通信之前建立连接,而是将数据包发送到目标地址并等待响应。这使得UDP比TCP更适合快速响应的场景。低延迟:DNS查询通常需要低延迟来提供快速的域名解析服

UDP协议是什么意思UDP协议是什么意思Aug 08, 2023 pm 03:43 PM

UDP是一种无连接的传输层协议,提供了一种将数据包发送到网络上的方式,但并不保证数据包的可靠性、顺序性和完整性,也不提供拥塞控制和流量控制等功能。UDP的特点:1、无连接性,不需要在发送数据之前建立连接,数据包可以直接发送到目标主机;2、高效性,头部开销较小,只有8字节;3、不可靠性,不提供数据包的可靠性,数据包发送后,即使丢失也不会重新发送,也不保证数据包的顺序等等。

Java怎么实现基于UDP协议的网络通信UDP编程Java怎么实现基于UDP协议的网络通信UDP编程May 17, 2023 pm 01:13 PM

UDP编程通信基本介绍类DatagramSocket和DatagramPacket【数据包/数据报】实现了基于UDP协议网络程序。UDP数据报通过数据报套接字DatagramSocket发送和接收,系统不保证UDP数据报一定能安全送到目的地,也不确信什么时候可以抵达。DatagramPacket对象封装了UDP数据报,在数据报中包含了发送端的IP地址和端口号以及接收端的IP地址和端口号。UDP协议中每个数据报都给出了完整的地址信息,因此无须建立发送方和接收方的连接。基本流程核心的两个类/对象Da

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),