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    <title>UDP 协议详细总结</title>
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    <description><![CDATA[<h1 id="udp协议详细总结">UDP协议详细总结</h1>
<p><strong>用户数据报协议（User Datagram Protocol, UDP）</strong> 是TCP/IP协议簇中传输层的两大核心协议之一，与TCP并列，由IETF在<strong>RFC 768</strong>中正式定义。它是一种<strong>无连接、轻量级、不可靠</strong>的传输层协议，核心设计哲学是极简主义，以最小的协议机制实现端到端的数据报传输，牺牲可靠性换取极致的低延迟与高灵活性，将传输控制的主动权完全交给应用层，是实时性场景的首选传输协议。</p>]]></description>
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