The User Datagram Protocol (UDP) is a basic method for sending small packages of data across the internet quickly, without first establishing a connection or checking whether the data arrived safely. It matters because it's faster than other methods and works well for applications like video streaming and online gaming where speed is more important than perfect accuracy.
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Wikidata facts
- Instance of
- computer network protocol
- Part of
- Internet protocol suite
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- uses
- IPv4
- publication date
- 1980-00-00
- described by source
- Cloudflare
- Commons category
- User Datagram Protocol
- Stack Exchange tag
- stackoverflow.com/tags/udp
- OSI Model layer location
- transport layer
- has characteristic
- connectionless communication
Sources (8)
via Wikidata · CC0
Article · 中文
用户数据报协议(英語:User Datagram Protocol,縮寫:UDP;又稱用户資料包协议)是一个简单的面向資料包的通信协议,位于OSI模型的传输层。该协议由在1980年设计且在RFC 768中被规范。典型网络上的众多使用UDP协议的关键应用在一定程度上是相似的。 在TCP/IP模型中,UDP为网络层以上和应用层以下提供了一个简单的接口。UDP只提供資料的不可靠传递,它一旦把应用程序发给网络层的資料发送出去,就不保留資料备份(所以UDP有时候也被认为是不可靠的資料包协议)。UDP在IP資料包的头部仅仅加入了复用和資料校验字段。 UDP适用于不需要或在程序中执行错误检查和纠正的应用,它避免了协议栈中此类处理的。对时间有较高要求的应用程序通常使用UDP,因为丢弃資料包比等待或重传导致延迟更可取。
Abstract from DBpedia / Wikipedia · CC BY-SA
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