<!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 `actix-settings/src/settings/max_connection_rate.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>max_connection_rate.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" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled><link rel="stylesheet" type="text/css" 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="icon" href="https://actix.rs/favicon.ico"></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="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../../actix_settings/index.html"><div class="logo-container"><img src="https://actix.rs/img/logo.png" alt="logo"></div></a><h2 class="location"></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../../actix_settings/index.html"><div class="logo-container">
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<img src="https://actix.rs/img/logo.png" alt="logo"></a><nav class="sub"><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"><button type="button">?</button></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></div><section id="main-content" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1">1</span>
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</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::fmt</span>;
<span class="kw">use</span> <span class="ident">serde::de</span>;
<span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">AtError</span>, <span class="ident">AtResult</span>, <span class="ident">Parse</span>};
<span class="doccomment">/// The maximum per-worker concurrent TLS connection limit.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// All listeners will stop accepting connections when this limit is reached. It can be used to</span>
<span class="doccomment">/// limit the global TLS CPU usage. By default max connections is set to a 256. Takes a string</span>
<span class="doccomment">/// value: Either "default", or an integer N > 0 e.g. "6".</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>, <span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">Hash</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">MaxConnectionRate</span> {
<span class="doccomment">/// The default connection limit. See struct docs.</span>
<span class="ident">Default</span>,
<span class="doccomment">/// A specific connection limit.</span>
<span class="ident">Manual</span>(<span class="ident">usize</span>),
}
<span class="kw">impl</span> <span class="ident">Parse</span> <span class="kw">for</span> <span class="ident">MaxConnectionRate</span> {
<span class="kw">fn</span> <span class="ident">parse</span>(<span class="ident">string</span>: <span class="kw-2">&</span><span class="ident">str</span>) -> <span class="ident">AtResult</span><span class="op"><</span><span class="self">Self</span><span class="op">></span> {
<span class="kw">match</span> <span class="ident">string</span> {
<span class="string">"default"</span> => <span class="prelude-val">Ok</span>(<span class="ident">MaxConnectionRate::Default</span>),
<span class="ident">string</span> => <span class="kw">match</span> <span class="ident">string</span>.<span class="ident">parse</span>::<span class="op"><</span><span class="ident">usize</span><span class="op">></span>() {
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) => <span class="prelude-val">Ok</span>(<span class="ident">MaxConnectionRate::Manual</span>(<span class="ident">val</span>)),
<span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="prelude-val">Err</span>(<span class="macro">InvalidValue!</span> {
<span class="ident">expected</span>: <span class="string">"an integer > 0"</span>,
<span class="ident">got</span>: <span class="ident">string</span>,
}),
},
}
}
}
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span> <span class="ident">de::Deserialize</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span> <span class="kw">for</span> <span class="ident">MaxConnectionRate</span> {
<span class="kw">fn</span> <span class="ident">deserialize</span><span class="op"><</span><span class="ident">D</span><span class="op">></span>(<span class="ident">deserializer</span>: <span class="ident">D</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>, <span class="ident">D::Error</span><span class="op">></span>
<span class="kw">where</span>
<span class="ident">D</span>: <span class="ident">de::Deserializer</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span>,
{
<span class="kw">struct</span> <span class="ident">MaxConnectionRateVisitor</span>;
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span> <span class="ident">de::Visitor</span><span class="op"><</span><span class="lifetime">'de</span><span class="op">></span> <span class="kw">for</span> <span class="ident">MaxConnectionRateVisitor</span> {
<span class="kw">type</span> <span class="ident">Value</span> <span class="op">=</span> <span class="ident">MaxConnectionRate</span>;
<span class="kw">fn</span> <span class="ident">expecting</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&mut</span> <span class="ident">fmt::Formatter</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>) -> <span class="ident">fmt::Result</span> {
<span class="kw">let</span> <span class="ident">msg</span> <span class="op">=</span> <span class="string">"Either \"default\" or a string containing an integer > 0"</span>;
<span class="ident">f</span>.<span class="ident">write_str</span>(<span class="ident">msg</span>)
}
<span class="kw">fn</span> <span class="ident">visit_str</span><span class="op"><</span><span class="ident">E</span><span class="op">></span>(<span class="self">self</span>, <span class="ident">value</span>: <span class="kw-2">&</span><span class="ident">str</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident"><span class="self">Self</span>::Value</span>, <span class="ident">E</span><span class="op">></span>
<span class="kw">where</span>
<span class="ident">E</span>: <span class="ident">de::Error</span>,
{
<span class="kw">match</span> <span class="ident">MaxConnectionRate::parse</span>(<span class="ident">value</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">max_connection_rate</span>) => <span class="prelude-val">Ok</span>(<span class="ident">max_connection_rate</span>),
<span class="prelude-val">Err</span>(<span class="ident">AtError::InvalidValue</span> { <span class="ident">expected</span>, <span class="ident">got</span>, .. }) => <span class="prelude-val">Err</span>(
<span class="ident">de::Error::invalid_value</span>(<span class="ident">de::Unexpected::Str</span>(<span class="kw-2">&</span><span class="ident">got</span>), <span class="kw-2">&</span><span class="ident">expected</span>),
),
<span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="macro">unreachable!</span>(),
}
}
}
<span class="ident">deserializer</span>.<span class="ident">deserialize_string</span>(<span class="ident">MaxConnectionRateVisitor</span>)
}
}
</code></pre></div>
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