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阿里云文档 2025-06-04

配置四层TCP/UDP协议加速

如果您的应用直接以四层TCP/UDP协议连接源站服务器，可以接入四层代理提升应用性能和安全防护。常见的四层TCP/UDP协议场景包括实时对战类游戏、实时音视频互动等。

阿里云文档 2025-03-20

Linux系统中TCP/UDP端口测试方法

本文介绍在Linux系统的ECS实例中，如何测试TCP和UDP端口的连通性。

文章 2024-01-14 来自：开发者社区

【计算机网络】为什么DNS协议采用的是UDP作为传输层协议，而不是TCP？

实际上DNS协议同时采用了UDP和TCP两种传输层协议。他同时占用了UDP和TCP的53端口。那么这个问题就变成了为什么DNS同时使用了UDP和TCP两种传输层协议？首先对于TCP协议来说，在进行请求和响应前后需要进行连接的建立，即TCP需要进行三次握手建立连接，四次挥手释放连接。相对于UDP而言，UDP不用进行连接的建立和释放，在这一步加快了请求响应的时间。再者TCP首部需要20个字节，而UD....

文章 2023-10-15 来自：开发者社区

百度搜索：蓝易云【为什么DNS使用UDP而不是TCP详解！】

DNS（Domain Name System）使用UDP（User Datagram Protocol）而不是TCP（Transmission Control Protocol）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...

百度搜索：蓝易云【为什么DNS使用UDP而不是TCP详解！】

文章 2017-11-01 来自：开发者社区

why DNS use both UDP and TCP

本文出自Simmy的个人blog：西米在线 http://simmyonline.com/archives/72.html   It's common to know that DNS use both protocal UDP and TCP for data transmission,but why and how ?   here's the note &nbs...

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