<!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-http/src/keep_alive.rs`."><title>keep_alive.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.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-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-dd39b87e5fcfba68.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="actix_http" data-themes="" data-resource-suffix="" data-rustdoc-version="1.80.0-nightly (bdbbb6c6a 2024-05-26)" data-channel="nightly" data-search-js="search-d52510db62a78183.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-118b08c4c78b968e.js"></script><script defer src="../../static.files/src-script-e66d777a5a92e9b2.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-20a3ad099b048cf2.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-df360f571f6edeae.css"></noscript><link rel="icon" href="https://actix.rs/favicon.ico"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer"></div><main><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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</pre></div><pre class="rust"><code><span class="kw">use </span>std::time::Duration;
<span class="doccomment">/// Connection keep-alive config.
</span><span class="attr">#[derive(Debug, Clone, Copy, PartialEq, Eq)]
</span><span class="kw">pub enum </span>KeepAlive {
<span class="doccomment">/// Keep-alive duration.
///
/// `KeepAlive::Timeout(Duration::ZERO)` is mapped to `KeepAlive::Disabled`.
</span>Timeout(Duration),
<span class="doccomment">/// Rely on OS to shutdown TCP connection.
///
/// Some defaults can be very long, check your OS documentation.
</span>Os,
<span class="doccomment">/// Keep-alive is disabled.
///
/// Connections will be closed immediately.
</span>Disabled,
}
<span class="kw">impl </span>KeepAlive {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>enabled(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
!<span class="macro">matches!</span>(<span class="self">self</span>, <span class="self">Self</span>::Disabled)
}
<span class="attr">#[allow(unused)] </span><span class="comment">// used with `http2` feature flag
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>duration(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Duration> {
<span class="kw">match </span><span class="self">self </span>{
KeepAlive::Timeout(dur) => <span class="prelude-val">Some</span>(<span class="kw-2">*</span>dur),
<span class="kw">_ </span>=> <span class="prelude-val">None</span>,
}
}
<span class="doccomment">/// Map zero duration to disabled.
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>normalize(<span class="self">self</span>) -> KeepAlive {
<span class="kw">match </span><span class="self">self </span>{
KeepAlive::Timeout(Duration::ZERO) => KeepAlive::Disabled,
ka => ka,
}
}
}
<span class="kw">impl </span>Default <span class="kw">for </span>KeepAlive {
<span class="kw">fn </span>default() -> <span class="self">Self </span>{
<span class="self">Self</span>::Timeout(Duration::from_secs(<span class="number">5</span>))
}
}
<span class="kw">impl </span>From<Duration> <span class="kw">for </span>KeepAlive {
<span class="kw">fn </span>from(dur: Duration) -> <span class="self">Self </span>{
KeepAlive::Timeout(dur).normalize()
}
}
<span class="kw">impl </span>From<<span class="prelude-ty">Option</span><Duration>> <span class="kw">for </span>KeepAlive {
<span class="kw">fn </span>from(ka_dur: <span class="prelude-ty">Option</span><Duration>) -> <span class="self">Self </span>{
<span class="kw">match </span>ka_dur {
<span class="prelude-val">Some</span>(dur) => KeepAlive::from(dur),
<span class="prelude-val">None </span>=> KeepAlive::Disabled,
}
.normalize()
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="attr">#[test]
</span><span class="kw">fn </span>from_impls() {
<span class="kw">let </span>test: KeepAlive = Duration::from_secs(<span class="number">1</span>).into();
<span class="macro">assert_eq!</span>(test, KeepAlive::Timeout(Duration::from_secs(<span class="number">1</span>)));
<span class="kw">let </span>test: KeepAlive = Duration::from_secs(<span class="number">0</span>).into();
<span class="macro">assert_eq!</span>(test, KeepAlive::Disabled);
<span class="kw">let </span>test: KeepAlive = <span class="prelude-val">Some</span>(Duration::from_secs(<span class="number">0</span>)).into();
<span class="macro">assert_eq!</span>(test, KeepAlive::Disabled);
<span class="kw">let </span>test: KeepAlive = <span class="prelude-val">None</span>.into();
<span class="macro">assert_eq!</span>(test, KeepAlive::Disabled);
}
}
</code></pre></div></section></main></body></html>