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href='../../../std/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span> <span id="2"> 2</span> <span id="3"> 3</span> <span id="4"> 4</span> <span id="5"> 5</span> <span id="6"> 6</span> <span id="7"> 7</span> <span id="8"> 8</span> <span id="9"> 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id="128">128</span> </pre><pre class="rust "> <span class="comment">// Copyright 2015 The Rust Project Developers. See the COPYRIGHT</span> <span class="comment">// file at the top-level directory of this distribution and at</span> <span class="comment">// http://rust-lang.org/COPYRIGHT.</span> <span class="comment">//</span> <span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span> <span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span> <span class="comment">// option. This file may not be copied, modified, or distributed</span> <span class="comment">// except according to those terms.</span> <span class="doccomment">//! Networking primitives for TCP/UDP communication.</span> <span class="doccomment">//!</span> <span class="doccomment">//! This module provides networking functionality for the Transmission Control and User</span> <span class="doccomment">//! Datagram Protocols, as well as types for IP and socket addresses.</span> <span class="doccomment">//!</span> <span class="doccomment">//! # Organization</span> <span class="doccomment">//!</span> <span class="doccomment">//! * [`TcpListener`] and [`TcpStream`] provide functionality for communication over TCP</span> <span class="doccomment">//! * [`UdpSocket`] provides functionality for communication over UDP</span> <span class="doccomment">//! * [`IpAddr`] represents IP addresses of either IPv4 or IPv6; [`Ipv4Addr`] and</span> <span class="doccomment">//! [`Ipv6Addr`] are respectively IPv4 and IPv6 addresses</span> <span class="doccomment">//! * [`SocketAddr`] represents socket addresses of either IPv4 or IPv6; [`SocketAddrV4`]</span> <span class="doccomment">//! and [`SocketAddrV6`] are respectively IPv4 and IPv6 socket addresses</span> <span class="doccomment">//! * [`ToSocketAddrs`] is a trait that used for generic address resolution when interacting</span> <span class="doccomment">//! with networking objects like [`TcpListener`], [`TcpStream`] or [`UdpSocket`]</span> <span class="doccomment">//! * Other types are return or parameter types for various methods in this module</span> <span class="doccomment">//!</span> <span class="doccomment">//! [`IpAddr`]: ../../std/net/enum.IpAddr.html</span> <span class="doccomment">//! [`Ipv4Addr`]: ../../std/net/struct.Ipv4Addr.html</span> <span class="doccomment">//! [`Ipv6Addr`]: ../../std/net/struct.Ipv6Addr.html</span> <span class="doccomment">//! [`SocketAddr`]: ../../std/net/enum.SocketAddr.html</span> <span class="doccomment">//! [`SocketAddrV4`]: ../../std/net/struct.SocketAddrV4.html</span> <span class="doccomment">//! [`SocketAddrV6`]: ../../std/net/struct.SocketAddrV6.html</span> <span class="doccomment">//! [`TcpListener`]: ../../std/net/struct.TcpListener.html</span> <span class="doccomment">//! [`TcpStream`]: ../../std/net/struct.TcpStream.html</span> <span class="doccomment">//! [`ToSocketAddrs`]: ../../std/net/trait.ToSocketAddrs.html</span> <span class="doccomment">//! [`UdpSocket`]: ../../std/net/struct.UdpSocket.html</span> <span class="attribute">#![<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="kw">use</span> <span class="ident">io</span>::{<span class="self">self</span>, <span class="ident">Error</span>, <span class="ident">ErrorKind</span>}; <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">ip</span>::{<span class="ident">IpAddr</span>, <span class="ident">Ipv4Addr</span>, <span class="ident">Ipv6Addr</span>, <span class="ident">Ipv6MulticastScope</span>}; <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">addr</span>::{<span class="ident">SocketAddr</span>, <span class="ident">SocketAddrV4</span>, <span class="ident">SocketAddrV6</span>, <span class="ident">ToSocketAddrs</span>}; <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">tcp</span>::{<span class="ident">TcpStream</span>, <span class="ident">TcpListener</span>, <span class="ident">Incoming</span>}; <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">udp</span>::<span class="ident">UdpSocket</span>; <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">parser</span>::<span class="ident">AddrParseError</span>; <span class="kw">mod</span> <span class="ident">ip</span>; <span class="kw">mod</span> <span class="ident">addr</span>; <span class="kw">mod</span> <span class="ident">tcp</span>; <span class="kw">mod</span> <span class="ident">udp</span>; <span class="kw">mod</span> <span class="ident">parser</span>; <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> <span class="kw">mod</span> <span class="ident">test</span>; <span class="doccomment">/// Possible values which can be passed to the [`shutdown`] method of</span> <span class="doccomment">/// [`TcpStream`].</span> <span class="doccomment">///</span> <span class="doccomment">/// [`shutdown`]: struct.TcpStream.html#method.shutdown</span> <span class="doccomment">/// [`TcpStream`]: struct.TcpStream.html</span> <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Copy</span>, <span class="ident">Clone</span>, <span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">Debug</span>)]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">Shutdown</span> { <span class="doccomment">/// The reading portion of the [`TcpStream`] should be shut down.</span> <span class="doccomment">///</span> <span class="doccomment">/// All currently blocked and future [reads] will return [`Ok(0)`].</span> <span class="doccomment">///</span> <span class="doccomment">/// [`TcpStream`]: ../../std/net/struct.TcpStream.html</span> <span class="doccomment">/// [reads]: ../../std/io/trait.Read.html</span> <span class="doccomment">/// [`Ok(0)`]: ../../std/result/enum.Result.html#variant.Ok</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="ident">Read</span>, <span class="doccomment">/// The writing portion of the [`TcpStream`] should be shut down.</span> <span class="doccomment">///</span> <span class="doccomment">/// All currently blocked and future [writes] will return an error.</span> <span class="doccomment">///</span> <span class="doccomment">/// [`TcpStream`]: ../../std/net/struct.TcpStream.html</span> <span class="doccomment">/// [writes]: ../../std/io/trait.Write.html</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="ident">Write</span>, <span class="doccomment">/// Both the reading and the writing portions of the [`TcpStream`] should be shut down.</span> <span class="doccomment">///</span> <span class="doccomment">/// See [`Shutdown::Read`] and [`Shutdown::Write`] for more information.</span> <span class="doccomment">///</span> <span class="doccomment">/// [`TcpStream`]: ../../std/net/struct.TcpStream.html</span> <span class="doccomment">/// [`Shutdown::Read`]: #variant.Read</span> <span class="doccomment">/// [`Shutdown::Write`]: #variant.Write</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span> <span class="ident">Both</span>, } <span class="attribute">#[<span class="ident">doc</span>(<span class="ident">hidden</span>)]</span> <span class="kw">trait</span> <span class="ident">NetInt</span> { <span class="kw">fn</span> <span class="ident">from_be</span>(<span class="ident">i</span>: <span class="self">Self</span>) <span class="op">-></span> <span class="self">Self</span>; <span class="kw">fn</span> <span class="ident">to_be</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="self">Self</span>; } <span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">doit</span> { ($(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span>:<span class="ident">ident</span>)<span class="kw-2">*</span>) <span class="op">=></span> ($(<span class="kw">impl</span> <span class="ident">NetInt</span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span> { <span class="kw">fn</span> <span class="ident">from_be</span>(<span class="ident">i</span>: <span class="self">Self</span>) <span class="op">-></span> <span class="self">Self</span> { <span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span><span class="op">></span>::<span class="ident">from_be</span>(<span class="ident">i</span>) } <span class="kw">fn</span> <span class="ident">to_be</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="self">Self</span> { <span class="op"><</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">t</span><span class="op">></span>::<span class="ident">to_be</span>(<span class="kw-2">*</span><span class="self">self</span>) } })<span class="kw-2">*</span>) } <span class="macro">doit</span><span class="macro">!</span> { <span class="ident">i8</span> <span class="ident">i16</span> <span class="ident">i32</span> <span class="ident">i64</span> <span class="ident">isize</span> <span class="ident">u8</span> <span class="ident">u16</span> <span class="ident">u32</span> <span class="ident">u64</span> <span class="ident">usize</span> } <span class="kw">fn</span> <span class="ident">hton</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">NetInt</span><span class="op">></span>(<span class="ident">i</span>: <span class="ident">I</span>) <span class="op">-></span> <span class="ident">I</span> { <span class="ident">i</span>.<span class="ident">to_be</span>() } <span class="kw">fn</span> <span class="ident">ntoh</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">NetInt</span><span class="op">></span>(<span class="ident">i</span>: <span class="ident">I</span>) <span class="op">-></span> <span class="ident">I</span> { <span class="ident">I</span>::<span class="ident">from_be</span>(<span class="ident">i</span>) } <span class="kw">fn</span> <span class="ident">each_addr</span><span class="op"><</span><span class="ident">A</span>: <span class="ident">ToSocketAddrs</span>, <span class="ident">F</span>, <span class="ident">T</span><span class="op">></span>(<span class="ident">addr</span>: <span class="ident">A</span>, <span class="kw-2">mut</span> <span class="ident">f</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnMut</span>(<span class="kw-2">&</span><span class="ident">SocketAddr</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">last_err</span> <span class="op">=</span> <span class="prelude-val">None</span>; <span class="kw">for</span> <span class="ident">addr</span> <span class="kw">in</span> <span class="ident">addr</span>.<span class="ident">to_socket_addrs</span>()<span class="question-mark">?</span> { <span class="kw">match</span> <span class="ident">f</span>(<span class="kw-2">&</span><span class="ident">addr</span>) { <span class="prelude-val">Ok</span>(<span class="ident">l</span>) <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">l</span>), <span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="ident">last_err</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">e</span>), } } <span class="prelude-val">Err</span>(<span class="ident">last_err</span>.<span class="ident">unwrap_or_else</span>(<span class="op">||</span> { <span class="ident">Error</span>::<span class="ident">new</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>, <span class="string">"could not resolve to any addresses"</span>) })) } </pre> </section><section id="search" class="content hidden"></section><section class="footer"></section><aside id="help" class="hidden"><div><h1 class="hidden">Help</h1><div class="shortcuts"><h2>Keyboard Shortcuts</h2><dl><dt><kbd>?</kbd></dt><dd>Show this help dialog</dd><dt><kbd>S</kbd></dt><dd>Focus the search field</dd><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd><dt><kbd>↹</kbd></dt><dd>Switch tab</dd><dt><kbd>⏎</kbd></dt><dd>Go to active search result</dd><dt><kbd>+</kbd></dt><dd>Expand all sections</dd><dt><kbd>-</kbd></dt><dd>Collapse all sections</dd></dl></div><div class="infos"><h2>Search Tricks</h2><p>Prefix searches with a type followed by a colon (e.g. <code>fn:</code>) to restrict the search to a given type.</p><p>Accepted types are: <code>fn</code>, <code>mod</code>, <code>struct</code>, <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, and <code>const</code>.</p><p>Search functions by type signature (e.g. <code>vec -> usize</code> or <code>* -> vec</code>)</p><p>Search multiple things at once by splitting your query with comma (e.g. <code>str,u8</code> or <code>String,struct:Vec,test</code>)</p></div></div></aside><script>window.rootPath = "../../../";window.currentCrate = "std";</script><script src="../../../aliases.js"></script><script src="../../../main.js"></script><script defer src="../../../search-index.js"></script></body></html>