| <!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="Source of the Rust file `/root/.cargo/git/checkouts/incubator-teaclave-crates-c8106113f74feefc/ede1f68/mio/src/sys/unix/net.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>net.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../../normalize.css"><link rel="stylesheet" href="../../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../../ayu.css" disabled><link rel="stylesheet" href="../../../../dark.css" disabled><link rel="stylesheet" href="../../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../../storage.js"></script><script defer src="../../../../source-script.js"></script><script defer src="../../../../source-files.js"></script><script defer src="../../../../main.js"></script><noscript><link rel="stylesheet" href="../../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../../mio/index.html"><div class="logo-container"><img class="rust-logo" src="../../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../../mio/index.html"><img class="rust-logo" src="../../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use </span>std::io; |
| <span class="kw">use </span>std::mem::size_of; |
| <span class="kw">use </span>std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6}; |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new_ip_socket(addr: SocketAddr, socket_type: libc::c_int) -> io::Result<libc::c_int> { |
| <span class="kw">let </span>domain = <span class="kw">match </span>addr { |
| SocketAddr::V4(..) => libc::AF_INET, |
| SocketAddr::V6(..) => libc::AF_INET6, |
| }; |
| |
| new_socket(domain, socket_type) |
| } |
| |
| <span class="doccomment">/// Create a new non-blocking socket. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new_socket(domain: libc::c_int, socket_type: libc::c_int) -> io::Result<libc::c_int> { |
| <span class="attribute">#[cfg(any( |
| target_os = <span class="string">"android"</span>, |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"illumos"</span>, |
| target_os = <span class="string">"linux"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| ))] |
| </span><span class="kw">let </span>socket_type = socket_type | libc::SOCK_NONBLOCK | libc::SOCK_CLOEXEC; |
| |
| <span class="kw">let </span>socket = <span class="macro">syscall!</span>(socket(domain, socket_type, <span class="number">0</span>))<span class="question-mark">?</span>; |
| |
| <span class="comment">// Mimick `libstd` and set `SO_NOSIGPIPE` on apple systems. |
| </span><span class="attribute">#[cfg(any( |
| target_os = <span class="string">"ios"</span>, |
| target_os = <span class="string">"macos"</span>, |
| target_os = <span class="string">"tvos"</span>, |
| target_os = <span class="string">"watchos"</span>, |
| ))] |
| </span><span class="kw">if let </span><span class="prelude-val">Err</span>(err) = <span class="macro">syscall!</span>(setsockopt( |
| socket, |
| libc::SOL_SOCKET, |
| libc::SO_NOSIGPIPE, |
| <span class="kw-2">&</span><span class="number">1 </span><span class="kw">as </span><span class="kw-2">*const </span>libc::c_int <span class="kw">as </span><span class="kw-2">*const </span>libc::c_void, |
| size_of::<libc::c_int>() <span class="kw">as </span>libc::socklen_t |
| )) { |
| <span class="kw">let _ </span>= <span class="macro">syscall!</span>(close(socket)); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(err); |
| } |
| |
| <span class="comment">// Darwin doesn't have SOCK_NONBLOCK or SOCK_CLOEXEC. |
| </span><span class="attribute">#[cfg(any( |
| target_os = <span class="string">"ios"</span>, |
| target_os = <span class="string">"macos"</span>, |
| target_os = <span class="string">"tvos"</span>, |
| target_os = <span class="string">"watchos"</span>, |
| ))] |
| </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Err</span>(err) = <span class="macro">syscall!</span>(fcntl(socket, libc::F_SETFL, libc::O_NONBLOCK)) { |
| <span class="kw">let _ </span>= <span class="macro">syscall!</span>(close(socket)); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(err); |
| } |
| <span class="kw">if let </span><span class="prelude-val">Err</span>(err) = <span class="macro">syscall!</span>(fcntl(socket, libc::F_SETFD, libc::FD_CLOEXEC)) { |
| <span class="kw">let _ </span>= <span class="macro">syscall!</span>(close(socket)); |
| <span class="kw">return </span><span class="prelude-val">Err</span>(err); |
| } |
| } |
| |
| <span class="prelude-val">Ok</span>(socket) |
| } |
| |
| <span class="doccomment">/// A type with the same memory layout as `libc::sockaddr`. Used in converting Rust level |
| /// SocketAddr* types into their system representation. The benefit of this specific |
| /// type over using `libc::sockaddr_storage` is that this type is exactly as large as it |
| /// needs to be and not a lot larger. And it can be initialized cleaner from Rust. |
| </span><span class="attribute">#[repr(C)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">union </span>SocketAddrCRepr { |
| v4: libc::sockaddr_in, |
| v6: libc::sockaddr_in6, |
| } |
| |
| <span class="kw">impl </span>SocketAddrCRepr { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>as_ptr(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">*const </span>libc::sockaddr { |
| <span class="self">self </span><span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_ as </span><span class="kw-2">*const </span>libc::sockaddr |
| } |
| } |
| |
| <span class="doccomment">/// Converts a Rust `SocketAddr` into the system representation. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>socket_addr(addr: <span class="kw-2">&</span>SocketAddr) -> (SocketAddrCRepr, libc::socklen_t) { |
| <span class="kw">match </span>addr { |
| SocketAddr::V4(<span class="kw-2">ref </span>addr) => { |
| <span class="comment">// `s_addr` is stored as BE on all machine and the array is in BE order. |
| // So the native endian conversion method is used so that it's never swapped. |
| </span><span class="kw">let </span>sin_addr = libc::in_addr { |
| s_addr: u32::from_ne_bytes(addr.ip().octets()), |
| }; |
| |
| <span class="kw">let </span>sockaddr_in = libc::sockaddr_in { |
| sin_family: libc::AF_INET <span class="kw">as </span>libc::sa_family_t, |
| sin_port: addr.port().to_be(), |
| sin_addr, |
| sin_zero: [<span class="number">0</span>; <span class="number">8</span>], |
| <span class="attribute">#[cfg(any( |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"ios"</span>, |
| target_os = <span class="string">"macos"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"tvos"</span>, |
| target_os = <span class="string">"watchos"</span>, |
| ))] |
| </span>sin_len: <span class="number">0</span>, |
| }; |
| |
| <span class="kw">let </span>sockaddr = SocketAddrCRepr { v4: sockaddr_in }; |
| <span class="kw">let </span>socklen = size_of::<libc::sockaddr_in>() <span class="kw">as </span>libc::socklen_t; |
| (sockaddr, socklen) |
| } |
| SocketAddr::V6(<span class="kw-2">ref </span>addr) => { |
| <span class="kw">let </span>sockaddr_in6 = libc::sockaddr_in6 { |
| sin6_family: libc::AF_INET6 <span class="kw">as </span>libc::sa_family_t, |
| sin6_port: addr.port().to_be(), |
| sin6_addr: libc::in6_addr { |
| s6_addr: addr.ip().octets(), |
| }, |
| sin6_flowinfo: addr.flowinfo(), |
| sin6_scope_id: addr.scope_id(), |
| <span class="attribute">#[cfg(any( |
| target_os = <span class="string">"dragonfly"</span>, |
| target_os = <span class="string">"freebsd"</span>, |
| target_os = <span class="string">"ios"</span>, |
| target_os = <span class="string">"macos"</span>, |
| target_os = <span class="string">"netbsd"</span>, |
| target_os = <span class="string">"openbsd"</span>, |
| target_os = <span class="string">"tvos"</span>, |
| target_os = <span class="string">"watchos"</span>, |
| ))] |
| </span>sin6_len: <span class="number">0</span>, |
| <span class="attribute">#[cfg(target_os = <span class="string">"illumos"</span>)] |
| </span>__sin6_src_id: <span class="number">0</span>, |
| }; |
| |
| <span class="kw">let </span>sockaddr = SocketAddrCRepr { v6: sockaddr_in6 }; |
| <span class="kw">let </span>socklen = size_of::<libc::sockaddr_in6>() <span class="kw">as </span>libc::socklen_t; |
| (sockaddr, socklen) |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Converts a `libc::sockaddr` compatible struct into a native Rust `SocketAddr`. |
| /// |
| /// # Safety |
| /// |
| /// `storage` must have the `ss_family` field correctly initialized. |
| /// `storage` must be initialised to a `sockaddr_in` or `sockaddr_in6`. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">unsafe fn </span>to_socket_addr( |
| storage: <span class="kw-2">*const </span>libc::sockaddr_storage, |
| ) -> io::Result<SocketAddr> { |
| <span class="kw">match </span>(<span class="kw-2">*</span>storage).ss_family <span class="kw">as </span>libc::c_int { |
| libc::AF_INET => { |
| <span class="comment">// Safety: if the ss_family field is AF_INET then storage must be a sockaddr_in. |
| </span><span class="kw">let </span>addr: <span class="kw-2">&</span>libc::sockaddr_in = <span class="kw-2">&*</span>(storage <span class="kw">as </span><span class="kw-2">*const </span>libc::sockaddr_in); |
| <span class="kw">let </span>ip = Ipv4Addr::from(addr.sin_addr.s_addr.to_ne_bytes()); |
| <span class="kw">let </span>port = u16::from_be(addr.sin_port); |
| <span class="prelude-val">Ok</span>(SocketAddr::V4(SocketAddrV4::new(ip, port))) |
| } |
| libc::AF_INET6 => { |
| <span class="comment">// Safety: if the ss_family field is AF_INET6 then storage must be a sockaddr_in6. |
| </span><span class="kw">let </span>addr: <span class="kw-2">&</span>libc::sockaddr_in6 = <span class="kw-2">&*</span>(storage <span class="kw">as </span><span class="kw-2">*const </span>libc::sockaddr_in6); |
| <span class="kw">let </span>ip = Ipv6Addr::from(addr.sin6_addr.s6_addr); |
| <span class="kw">let </span>port = u16::from_be(addr.sin6_port); |
| <span class="prelude-val">Ok</span>(SocketAddr::V6(SocketAddrV6::new( |
| ip, |
| port, |
| addr.sin6_flowinfo, |
| addr.sin6_scope_id, |
| ))) |
| } |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(io::ErrorKind::InvalidInput.into()), |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../../" data-current-crate="mio" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
