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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="`recv(fd, buf, flags)`—Reads data from a socket."><title>recv_uninit in rustix::net - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.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" crossorigin href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-42caa33d.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="rustix" data-themes="" data-resource-suffix="" data-rustdoc-version="1.84.0 (9fc6b4312 2025-01-07)" data-channel="1.84.0" data-search-js="search-92e6798f.js" data-settings-js="settings-0f613d39.js" ><script src="../../static.files/storage-59e33391.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-893ab5e7.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../rustix/index.html">rustix</a><span class="version">0.38.37</span></h2></div><div class="sidebar-elems"><div id="rustdoc-modnav"><h2><a href="index.html">In rustix::<wbr>net</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="../index.html">rustix</a>::<wbr><a href="index.html">net</a></span><h1>Function <span class="fn">recv_uninit</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/rustix/net/send_recv/mod.rs.html#81-93">Source</a> </span></div><pre class="rust item-decl"><code>pub fn recv_uninit<Fd: <a class="trait" href="../fd/trait.AsFd.html" title="trait rustix::fd::AsFd">AsFd</a>>(
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fd: Fd,
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buf: &mut [<a class="union" href="https://doc.rust-lang.org/1.84.0/core/mem/maybe_uninit/union.MaybeUninit.html" title="union core::mem::maybe_uninit::MaybeUninit">MaybeUninit</a><<a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.u8.html">u8</a>>],
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flags: <a class="struct" href="struct.RecvFlags.html" title="struct rustix::net::RecvFlags">RecvFlags</a>,
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) -> <a class="type" href="../io/type.Result.html" title="type rustix::io::Result">Result</a><(&mut [<a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.u8.html">u8</a>], &mut [<a class="union" href="https://doc.rust-lang.org/1.84.0/core/mem/maybe_uninit/union.MaybeUninit.html" title="union core::mem::maybe_uninit::MaybeUninit">MaybeUninit</a><<a class="primitive" href="https://doc.rust-lang.org/1.84.0/std/primitive.u8.html">u8</a>>])></code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p><code>recv(fd, buf, flags)</code>—Reads data from a socket.</p>
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<p>This is equivalent to <a href="fn.recv.html" title="fn rustix::net::recv"><code>recv</code></a>, except that it can read into uninitialized
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memory. It returns the slice that was initialized by this function and the
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slice that remains uninitialized.</p>
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<p>Because this interface returns the length via the returned slice, it’s
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unsable to return the untruncated length that would be returned when the
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<code>RecvFlags::TRUNC</code> flag is used. If you need the untruncated length, use
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<a href="fn.recv.html" title="fn rustix::net::recv"><code>recv</code></a>.</p>
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</div></details></section></div></main></body></html> |