不像 UDP 有 DatagramPacket 是专门的“UDP 数据报”，TCP 没有专门的“TCP 数据报” 因为 TCP 是面向字节流的，TCP 传输数据的基本单位就是 byte UDP 是面向数据报，UDP 这里需要定义专门的类，表示 UDP 数据报，作为 UDP 传输的基本单位 TCP 这里在进行读数据或者写数据的时候，都是以字节或字节数组作为参...

文章 2023-10-23 来自：开发者社区

UDP,TCP特点对比，DatagramPacket,SocketAddress的使用 ,UDP的API，如何编写一个简单的回显服务器及客户端，详细解释（本文内容较难，建议多次阅读，自己敲一敲）

一、传输层提供协议主要有两个：（两套有不同的API）1.UDP：无连接，不可靠传输，面向数据报，全双工2.TCP：有连接，可靠传输，面向字节流，全双工有/无连接，如同JDBC（看我之前写的里面），先创建一个DataSource,再通过DataSource创建Connection->(TCP编程，也存在这种类似建立连接的过程。客户端和服务器之间，使用“内存”保存对端信息～～，双方都保存这个信....

共有7条

< 1 >

跳转至： GO

更新时间 2024-10-12 09:18:35

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

云服务器 ECS客户端相关内容

云服务器 ECS更多客户端相关

云服务器 ECS您可能感兴趣

产品推荐

{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":6,"count":6}]},"card":[{"des":"云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。","link1":"https://ecs-buy.aliyun.com/wizard#/prepay/cn-hangzhou","link":"https://www.aliyun.com/product/ecs","icon":"https://img.alicdn.com/tfs/TB1afahQpXXXXaAapXXXXXXXXXX-114-114.png","btn2":"了解价格","tip":"ECS精选产品特惠低至0.55折，<a href=\"https://www.aliyun.com/daily-act/ecs/activity_selection\" target=\"_blank\">立即查看</a>     高配云服务器免费试用，<a href=\"https://www.aliyun.com/daily-act/ecs/free\" target=\"_blank\">立即查看</a>","btn1":"立即开通","link2":"https://www.aliyun.com/price/product?spm=5176.8789780.1092586.1.2e8e57a8lGNDpl#/ecs/detail","title":"云服务器 ECS"}],"search":[{"txt":"云服务器精选特惠，低至0.45折","link":"https://www.aliyun.com/daily-act/ecs/activity_selection"},{"txt":"GPU算力开启AI时代","link":"https://www.aliyun.com/daily-act/ecs/s6_sales"},{"txt":"ECS免费试用最高12个月","link":"https://www.aliyun.com/daily-act/ecs/free"},{"txt":"ECS云服务器学习路径","link":"https://help.aliyun.com/learn/learningpath/ecs.html"},{"txt":"ECS云服务器入门","link":"https://help.aliyun.com/document_detail/25422.html"},{"txt":"ECS云服务器选型推荐","link":"https://help.aliyun.com/document_detail/58291.html"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"link":"https://www.aliyun.com/product/ecs","icon":"ecs","title":"云服务器ECS","des":"云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。","btn1":"产品详情页","btn2":"ECS控制台","btn3":"新用户免费试用","link3":"https://free.aliyun.com/?goodsId=10000011871,10000011876","link1":"https://www.aliyun.com/product/ecs","link2":"https://ecs.console.aliyun.com/#/home","infoGroup":[{"infoName":"最新活动","infoContent":{"firstContentName":"99计划延1年，优惠续享","firstContentLink":"https://www.aliyun.com/daily-act/ecs/99program","lastContentName":"","lastContentLink":""}},{"infoName":"产品入门","infoContent":{"firstContentName":"ECS选型推荐","firstContentLink":"https://help.aliyun.com/document_detail/58291.html","lastContentName":"ECS学习路径","lastContentLink":"https://help.aliyun.com/learn/learningpath/ecs.html"}},{"infoName":"热门产品","infoContent":{"firstContentName":"低价e实例，新老同享","firstContentLink":"https://www.aliyun.com/daily-act/ecs/activity_selection?spm=5176.28478213.J_4267641240.1.708832b4zorJSg","lastContentLink":"https://www.aliyun.com/daily-act/ecs/ecs-intel-9th","lastContentName":"第九代企业级产品"}},{"infoName":"最佳实践","infoContent":{"firstContentLink":"https://www.aliyun.com/benefit/scene/ainew","firstContentName":"助力AI，GPU算力1折起 ","lastContentLink":"https://help.aliyun.com/zh/ecs/user-guide/migrate-servers","lastContentName":"服务器迁移指引"}}],"contentLink":"https://www.aliyun.com/product/ecs"}]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":6,"count":6}]},"card":[{"des":"云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。","link1":"https://ecs-buy.aliyun.com/wizard#/prepay/cn-hangzhou","link":"https://www.aliyun.com/product/ecs","icon":"https://img.alicdn.com/tfs/TB1afahQpXXXXaAapXXXXXXXXXX-114-114.png","btn2":"了解价格","tip":"ECS精选产品特惠低至0.55折，<a href=\"https://www.aliyun.com/daily-act/ecs/activity_selection\" target=\"_blank\">立即查看</a>     高配云服务器免费试用，<a href=\"https://www.aliyun.com/daily-act/ecs/free\" target=\"_blank\">立即查看</a>","btn1":"立即开通","link2":"https://www.aliyun.com/price/product?spm=5176.8789780.1092586.1.2e8e57a8lGNDpl#/ecs/detail","title":"云服务器 ECS"}],"search":[{"txt":"云服务器精选特惠，低至0.45折","link":"https://www.aliyun.com/daily-act/ecs/activity_selection"},{"txt":"GPU算力开启AI时代","link":"https://www.aliyun.com/daily-act/ecs/s6_sales"},{"txt":"ECS免费试用最高12个月","link":"https://www.aliyun.com/daily-act/ecs/free"},{"txt":"ECS云服务器学习路径","link":"https://help.aliyun.com/learn/learningpath/ecs.html"},{"txt":"ECS云服务器入门","link":"https://help.aliyun.com/document_detail/25422.html"},{"txt":"ECS云服务器选型推荐","link":"https://help.aliyun.com/document_detail/58291.html"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"link":"https://www.aliyun.com/product/ecs","icon":"ecs","title":"云服务器ECS","des":"云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。","btn1":"产品详情页","btn2":"ECS控制台","btn3":"新用户免费试用","link3":"https://free.aliyun.com/?goodsId=10000011871,10000011876","link1":"https://www.aliyun.com/product/ecs","link2":"https://ecs.console.aliyun.com/#/home","infoGroup":[{"infoName":"最新活动","infoContent":{"firstContentName":"99计划延1年，优惠续享","firstContentLink":"https://www.aliyun.com/daily-act/ecs/99program","lastContentName":"","lastContentLink":""}},{"infoName":"产品入门","infoContent":{"firstContentName":"ECS选型推荐","firstContentLink":"https://help.aliyun.com/document_detail/58291.html","lastContentName":"ECS学习路径","lastContentLink":"https://help.aliyun.com/learn/learningpath/ecs.html"}},{"infoName":"热门产品","infoContent":{"firstContentName":"低价e实例，新老同享","firstContentLink":"https://www.aliyun.com/daily-act/ecs/activity_selection?spm=5176.28478213.J_4267641240.1.708832b4zorJSg","lastContentLink":"https://www.aliyun.com/daily-act/ecs/ecs-intel-9th","lastContentName":"第九代企业级产品"}},{"infoName":"最佳实践","infoContent":{"firstContentLink":"https://www.aliyun.com/benefit/scene/ainew","firstContentName":"助力AI，GPU算力1折起 ","lastContentLink":"https://help.aliyun.com/zh/ecs/user-guide/migrate-servers","lastContentName":"服务器迁移指引"}}],"contentLink":"https://www.aliyun.com/product/ecs"}]}}

云服务器ECS

云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。

产品详情页

ECS控制台

新用户免费试用

Hermes Agent，打造自进化智能体

Hermes Agent 是由 Nous Research 打造的开源自主智能体框架，它拥有持久化记忆，能随着使用时间的增长不断变强。具备完整的自我学习闭环：自主创建技能、在使用中改进技能、跨会话召回记忆，真正做到"越用越聪明"。

了解更多