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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Uniform interface to send and receive UDP packets with advanced features useful for QUIC"><title>noq_udp - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="noq_udp" data-themes="" data-resource-suffix="" data-rustdoc-version="1.92.0-nightly (b6f0945e4 2025-10-08)" data-channel="nightly" data-search-js="search-8d3311b9.js" data-stringdex-js="stringdex-828709d0.js" data-settings-js="settings-c38705f0.js" ><script src="../static.files/storage-e2aeef58.js"></script><script defer src="../crates.js"></script><script defer src="../static.files/main-ce535bd0.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc mod crate"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">Crate noq_udp</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../noq_udp/index.html">noq_udp</a><span class="version">1.0.0</span></h2></div><div class="sidebar-elems"><ul class="block"><li><a id="all-types" href="all.html">All Items</a></li></ul><section id="rustdoc-toc"><h3><a href="#structs">Crate Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#enums" title="Enums">Enums</a></li><li><a href="#constants" title="Constants">Constants</a></li></ul></section><div id="rustdoc-modnav"></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><h1>Crate <span>noq_udp</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/noq_udp/lib.rs.html#1-302">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Uniform interface to send and receive UDP packets with advanced features useful for QUIC</p>
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<p>This crate exposes kernel UDP stack features available on most modern systems which are required
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for an efficient and conformant QUIC implementation. As of this writing, these are not available
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in std or major async runtimes, and their niche character and complexity are a barrier to adding
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them. Hence, a dedicated crate.</p>
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<p>Exposed features include:</p>
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<ul>
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<li>Segmentation offload for bulk send and receive operations, reducing CPU load.</li>
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<li>Reporting the exact destination address of received packets and specifying explicit source
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addresses for sent packets, allowing responses to be sent from the address that the peer
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expects when there are multiple possibilities. This is common when bound to a wildcard address
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in IPv6 due to <a href="https://www.rfc-editor.org/rfc/rfc8981.html">RFC 8981</a> temporary addresses.</li>
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<li><a href="https://www.rfc-editor.org/rfc/rfc3168.html">Explicit Congestion Notification</a>, which is required by QUIC to prevent packet loss and reduce
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latency on congested links when supported by the network path.</li>
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<li>Disabled IP-layer fragmentation, which allows the true physical MTU to be detected and reduces
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risk of QUIC packet loss.</li>
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</ul>
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<p>Some features are unavailable in some environments. This can be due to an outdated operating
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system or drivers. Some operating systems may not implement desired features at all, or may not
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yet be supported by the crate. When support is unavailable, functionality will gracefully
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degrade.</p>
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</div></details><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a class="struct" href="struct.RecvMeta.html" title="struct noq_udp::RecvMeta">Recv<wbr>Meta</a></dt><dd>Metadata for a single buffer filled with bytes received from the network</dd><dt><a class="struct" href="struct.Transmit.html" title="struct noq_udp::Transmit">Transmit</a></dt><dd>An outgoing packet</dd><dt><a class="struct" href="struct.UdpSockRef.html" title="struct noq_udp::UdpSockRef">UdpSock<wbr>Ref</a></dt><dd>A borrowed UDP socket</dd><dt><a class="struct" href="struct.UdpSocketState.html" title="struct noq_udp::UdpSocketState">UdpSocket<wbr>State</a></dt><dd>Tokio-compatible UDP socket with some useful specializations.</dd></dl><h2 id="enums" class="section-header">Enums<a href="#enums" class="anchor">§</a></h2><dl class="item-table"><dt><a class="enum" href="enum.EcnCodepoint.html" title="enum noq_udp::EcnCodepoint">EcnCodepoint</a></dt><dd>Explicit congestion notification codepoint</dd></dl><h2 id="constants" class="section-header">Constants<a href="#constants" class="anchor">§</a></h2><dl class="item-table"><dt><a class="constant" href="constant.BATCH_SIZE.html" title="constant noq_udp::BATCH_SIZE">BATCH_<wbr>SIZE</a></dt><dd>Number of UDP packets to send/receive at a time</dd></dl></section></div></main></body></html> |