| <!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/net/uds/stream.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>stream.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><span class="kw">crate</span>::io_source::IoSource; |
| <span class="kw">use crate</span>::{event, sys, Interest, Registry, Token}; |
| |
| <span class="kw">use </span>std::fmt; |
| <span class="kw">use </span>std::io::{<span class="self">self</span>, IoSlice, IoSliceMut, Read, Write}; |
| <span class="kw">use </span>std::net::Shutdown; |
| <span class="kw">use </span>std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd}; |
| <span class="kw">use </span>std::os::unix::net; |
| <span class="kw">use </span>std::path::Path; |
| |
| <span class="doccomment">/// A non-blocking Unix stream socket. |
| </span><span class="kw">pub struct </span>UnixStream { |
| inner: IoSource<net::UnixStream>, |
| } |
| |
| <span class="kw">impl </span>UnixStream { |
| <span class="doccomment">/// Connects to the socket named by `path`. |
| /// |
| /// This may return a `WouldBlock` in which case the socket connection |
| /// cannot be completed immediately. Usually it means the backlog is full. |
| </span><span class="kw">pub fn </span>connect<P: AsRef<Path>>(path: P) -> io::Result<UnixStream> { |
| sys::uds::stream::connect(path.as_ref()).map(UnixStream::from_std) |
| } |
| |
| <span class="doccomment">/// Creates a new `UnixStream` from a standard `net::UnixStream`. |
| /// |
| /// This function is intended to be used to wrap a Unix stream from the |
| /// standard library in the Mio equivalent. The conversion assumes nothing |
| /// about the underlying stream; it is left up to the user to set it in |
| /// non-blocking mode. |
| /// |
| /// # Note |
| /// |
| /// The Unix stream here will not have `connect` called on it, so it |
| /// should already be connected via some other means (be it manually, or |
| /// the standard library). |
| </span><span class="kw">pub fn </span>from_std(stream: net::UnixStream) -> UnixStream { |
| UnixStream { |
| inner: IoSource::new(stream), |
| } |
| } |
| |
| <span class="doccomment">/// Creates an unnamed pair of connected sockets. |
| /// |
| /// Returns two `UnixStream`s which are connected to each other. |
| </span><span class="kw">pub fn </span>pair() -> io::Result<(UnixStream, UnixStream)> { |
| sys::uds::stream::pair().map(|(stream1, stream2)| { |
| (UnixStream::from_std(stream1), UnixStream::from_std(stream2)) |
| }) |
| } |
| |
| <span class="doccomment">/// Returns the socket address of the local half of this connection. |
| </span><span class="kw">pub fn </span>local_addr(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<sys::SocketAddr> { |
| sys::uds::stream::local_addr(<span class="kw-2">&</span><span class="self">self</span>.inner) |
| } |
| |
| <span class="doccomment">/// Returns the socket address of the remote half of this connection. |
| </span><span class="kw">pub fn </span>peer_addr(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<sys::SocketAddr> { |
| sys::uds::stream::peer_addr(<span class="kw-2">&</span><span class="self">self</span>.inner) |
| } |
| |
| <span class="doccomment">/// Returns the value of the `SO_ERROR` option. |
| </span><span class="kw">pub fn </span>take_error(<span class="kw-2">&</span><span class="self">self</span>) -> io::Result<<span class="prelude-ty">Option</span><io::Error>> { |
| <span class="self">self</span>.inner.take_error() |
| } |
| |
| <span class="doccomment">/// Shuts down the read, write, or both halves of this connection. |
| /// |
| /// This function will cause all pending and future I/O calls on the |
| /// specified portions to immediately return with an appropriate value |
| /// (see the documentation of `Shutdown`). |
| </span><span class="kw">pub fn </span>shutdown(<span class="kw-2">&</span><span class="self">self</span>, how: Shutdown) -> io::Result<()> { |
| <span class="self">self</span>.inner.shutdown(how) |
| } |
| |
| <span class="doccomment">/// Execute an I/O operation ensuring that the socket receives more events |
| /// if it hits a [`WouldBlock`] error. |
| /// |
| /// # Notes |
| /// |
| /// This method is required to be called for **all** I/O operations to |
| /// ensure the user will receive events once the socket is ready again after |
| /// returning a [`WouldBlock`] error. |
| /// |
| /// [`WouldBlock`]: io::ErrorKind::WouldBlock |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # use std::error::Error; |
| /// # |
| /// # fn main() -> Result<(), Box<dyn Error>> { |
| /// use std::io; |
| /// use std::os::unix::io::AsRawFd; |
| /// use mio::net::UnixStream; |
| /// |
| /// let (stream1, stream2) = UnixStream::pair()?; |
| /// |
| /// // Wait until the stream is writable... |
| /// |
| /// // Write to the stream using a direct libc call, of course the |
| /// // `io::Write` implementation would be easier to use. |
| /// let buf = b"hello"; |
| /// let n = stream1.try_io(|| { |
| /// let buf_ptr = &buf as *const _ as *const _; |
| /// let res = unsafe { libc::send(stream1.as_raw_fd(), buf_ptr, buf.len(), 0) }; |
| /// if res != -1 { |
| /// Ok(res as usize) |
| /// } else { |
| /// // If EAGAIN or EWOULDBLOCK is set by libc::send, the closure |
| /// // should return `WouldBlock` error. |
| /// Err(io::Error::last_os_error()) |
| /// } |
| /// })?; |
| /// eprintln!("write {} bytes", n); |
| /// |
| /// // Wait until the stream is readable... |
| /// |
| /// // Read from the stream using a direct libc call, of course the |
| /// // `io::Read` implementation would be easier to use. |
| /// let mut buf = [0; 512]; |
| /// let n = stream2.try_io(|| { |
| /// let buf_ptr = &mut buf as *mut _ as *mut _; |
| /// let res = unsafe { libc::recv(stream2.as_raw_fd(), buf_ptr, buf.len(), 0) }; |
| /// if res != -1 { |
| /// Ok(res as usize) |
| /// } else { |
| /// // If EAGAIN or EWOULDBLOCK is set by libc::recv, the closure |
| /// // should return `WouldBlock` error. |
| /// Err(io::Error::last_os_error()) |
| /// } |
| /// })?; |
| /// eprintln!("read {} bytes", n); |
| /// # Ok(()) |
| /// # } |
| /// ``` |
| </span><span class="kw">pub fn </span>try_io<F, T>(<span class="kw-2">&</span><span class="self">self</span>, f: F) -> io::Result<T> |
| <span class="kw">where |
| </span>F: FnOnce() -> io::Result<T>, |
| { |
| <span class="self">self</span>.inner.do_io(|<span class="kw">_</span>| f()) |
| } |
| } |
| |
| <span class="kw">impl </span>Read <span class="kw">for </span>UnixStream { |
| <span class="kw">fn </span>read(<span class="kw-2">&mut </span><span class="self">self</span>, buf: <span class="kw-2">&mut </span>[u8]) -> io::Result<usize> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.read(buf)) |
| } |
| |
| <span class="kw">fn </span>read_vectored(<span class="kw-2">&mut </span><span class="self">self</span>, bufs: <span class="kw-2">&mut </span>[IoSliceMut<<span class="lifetime">'_</span>>]) -> io::Result<usize> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.read_vectored(bufs)) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Read <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>UnixStream { |
| <span class="kw">fn </span>read(<span class="kw-2">&mut </span><span class="self">self</span>, buf: <span class="kw-2">&mut </span>[u8]) -> io::Result<usize> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.read(buf)) |
| } |
| |
| <span class="kw">fn </span>read_vectored(<span class="kw-2">&mut </span><span class="self">self</span>, bufs: <span class="kw-2">&mut </span>[IoSliceMut<<span class="lifetime">'_</span>>]) -> io::Result<usize> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.read_vectored(bufs)) |
| } |
| } |
| |
| <span class="kw">impl </span>Write <span class="kw">for </span>UnixStream { |
| <span class="kw">fn </span>write(<span class="kw-2">&mut </span><span class="self">self</span>, buf: <span class="kw-2">&</span>[u8]) -> io::Result<usize> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.write(buf)) |
| } |
| |
| <span class="kw">fn </span>write_vectored(<span class="kw-2">&mut </span><span class="self">self</span>, bufs: <span class="kw-2">&</span>[IoSlice<<span class="lifetime">'_</span>>]) -> io::Result<usize> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.write_vectored(bufs)) |
| } |
| |
| <span class="kw">fn </span>flush(<span class="kw-2">&mut </span><span class="self">self</span>) -> io::Result<()> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.flush()) |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Write <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>UnixStream { |
| <span class="kw">fn </span>write(<span class="kw-2">&mut </span><span class="self">self</span>, buf: <span class="kw-2">&</span>[u8]) -> io::Result<usize> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.write(buf)) |
| } |
| |
| <span class="kw">fn </span>write_vectored(<span class="kw-2">&mut </span><span class="self">self</span>, bufs: <span class="kw-2">&</span>[IoSlice<<span class="lifetime">'_</span>>]) -> io::Result<usize> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.write_vectored(bufs)) |
| } |
| |
| <span class="kw">fn </span>flush(<span class="kw-2">&mut </span><span class="self">self</span>) -> io::Result<()> { |
| <span class="self">self</span>.inner.do_io(|<span class="kw-2">mut </span>inner| inner.flush()) |
| } |
| } |
| |
| <span class="kw">impl </span>event::Source <span class="kw">for </span>UnixStream { |
| <span class="kw">fn </span>register( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| registry: <span class="kw-2">&</span>Registry, |
| token: Token, |
| interests: Interest, |
| ) -> io::Result<()> { |
| <span class="self">self</span>.inner.register(registry, token, interests) |
| } |
| |
| <span class="kw">fn </span>reregister( |
| <span class="kw-2">&mut </span><span class="self">self</span>, |
| registry: <span class="kw-2">&</span>Registry, |
| token: Token, |
| interests: Interest, |
| ) -> io::Result<()> { |
| <span class="self">self</span>.inner.reregister(registry, token, interests) |
| } |
| |
| <span class="kw">fn </span>deregister(<span class="kw-2">&mut </span><span class="self">self</span>, registry: <span class="kw-2">&</span>Registry) -> io::Result<()> { |
| <span class="self">self</span>.inner.deregister(registry) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>UnixStream { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="self">self</span>.inner.fmt(f) |
| } |
| } |
| |
| <span class="kw">impl </span>IntoRawFd <span class="kw">for </span>UnixStream { |
| <span class="kw">fn </span>into_raw_fd(<span class="self">self</span>) -> RawFd { |
| <span class="self">self</span>.inner.into_inner().into_raw_fd() |
| } |
| } |
| |
| <span class="kw">impl </span>AsRawFd <span class="kw">for </span>UnixStream { |
| <span class="kw">fn </span>as_raw_fd(<span class="kw-2">&</span><span class="self">self</span>) -> RawFd { |
| <span class="self">self</span>.inner.as_raw_fd() |
| } |
| } |
| |
| <span class="kw">impl </span>FromRawFd <span class="kw">for </span>UnixStream { |
| <span class="doccomment">/// Converts a `RawFd` to a `UnixStream`. |
| /// |
| /// # Notes |
| /// |
| /// The caller is responsible for ensuring that the socket is in |
| /// non-blocking mode. |
| </span><span class="kw">unsafe fn </span>from_raw_fd(fd: RawFd) -> UnixStream { |
| UnixStream::from_std(FromRawFd::from_raw_fd(fd)) |
| } |
| } |
| </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> |
