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<!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-ws/src/session.rs`."><title>session.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-9ee3a5e31a2afa3e.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="actix_ws" data-themes="" data-resource-suffix="" data-rustdoc-version="1.75.0-nightly (fee5518cd 2023-11-05)" data-channel="nightly" data-search-js="search-8fbf244ebcf71464.js" data-settings-js="settings-74424d7eec62a23e.js" ><script src="../../static.files/storage-fec3eaa3851e447d.js"></script><script defer src="../../static.files/src-script-3280b574d94e47b4.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-9dd44ab47b99a0fb.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-5d8b3c7633ad77ba.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"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../actix_ws/index.html"><img src="https://actix.rs/img/logo.png" alt="actix_ws"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" 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="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><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::sync::{
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atomic::{AtomicBool, Ordering},
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Arc,
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};
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<span class="kw">use </span>actix_http::ws::{CloseReason, Message};
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<span class="kw">use </span>actix_web::web::Bytes;
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<span class="kw">use </span>bytestring::ByteString;
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<span class="kw">use </span>tokio::sync::mpsc::Sender;
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<span class="doccomment">/// A handle into the websocket session.
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///
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/// This type can be used to send messages into the websocket.
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</span><span class="attr">#[derive(Clone)]
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</span><span class="kw">pub struct </span>Session {
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inner: <span class="prelude-ty">Option</span><Sender<Message>>,
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closed: Arc<AtomicBool>,
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}
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<span class="doccomment">/// The error representing a closed websocket session
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</span><span class="attr">#[derive(Debug)]
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</span><span class="kw">pub struct </span>Closed;
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<span class="kw">impl </span>std::fmt::Display <span class="kw">for </span>Closed {
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<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>std::fmt::Formatter<<span class="lifetime">'_</span>>) -> std::fmt::Result {
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<span class="macro">write!</span>(f, <span class="string">"Session is closed"</span>)
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}
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}
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<span class="kw">impl </span>std::error::Error <span class="kw">for </span>Closed {}
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<span class="kw">impl </span>Session {
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<span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>new(inner: Sender<Message>) -> <span class="self">Self </span>{
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Session {
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inner: <span class="prelude-val">Some</span>(inner),
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closed: Arc::new(AtomicBool::new(<span class="bool-val">false</span>)),
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}
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}
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<span class="kw">fn </span>pre_check(<span class="kw-2">&mut </span><span class="self">self</span>) {
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<span class="kw">if </span><span class="self">self</span>.closed.load(Ordering::Relaxed) {
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<span class="self">self</span>.inner.take();
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}
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}
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<span class="doccomment">/// Send text into the websocket
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///
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/// ```rust,ignore
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/// if session.text("Some text").await.is_err() {
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/// // session closed
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/// }
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/// ```
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</span><span class="kw">pub async fn </span>text(<span class="kw-2">&mut </span><span class="self">self</span>, msg: <span class="kw">impl </span>Into<ByteString>) -> <span class="prelude-ty">Result</span><(), Closed> {
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<span class="self">self</span>.pre_check();
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<span class="kw">if let </span><span class="prelude-val">Some</span>(inner) = <span class="self">self</span>.inner.as_mut() {
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inner
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.send(Message::Text(msg.into()))
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.<span class="kw">await
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</span>.map_err(|<span class="kw">_</span>| Closed)
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} <span class="kw">else </span>{
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<span class="prelude-val">Err</span>(Closed)
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}
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}
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<span class="doccomment">/// Send raw bytes into the websocket
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///
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/// ```rust,ignore
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/// if session.binary(b"some bytes").await.is_err() {
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/// // session closed
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/// }
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/// ```
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</span><span class="kw">pub async fn </span>binary(<span class="kw-2">&mut </span><span class="self">self</span>, msg: <span class="kw">impl </span>Into<Bytes>) -> <span class="prelude-ty">Result</span><(), Closed> {
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<span class="self">self</span>.pre_check();
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<span class="kw">if let </span><span class="prelude-val">Some</span>(inner) = <span class="self">self</span>.inner.as_mut() {
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inner
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.send(Message::Binary(msg.into()))
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.<span class="kw">await
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</span>.map_err(|<span class="kw">_</span>| Closed)
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} <span class="kw">else </span>{
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<span class="prelude-val">Err</span>(Closed)
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||
}
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}
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||
|
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<span class="doccomment">/// Ping the client
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///
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/// For many applications, it will be important to send regular pings to keep track of if the
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/// client has disconnected
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///
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||
/// ```rust,ignore
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/// if session.ping(b"").await.is_err() {
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/// // session is closed
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/// }
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/// ```
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</span><span class="kw">pub async fn </span>ping(<span class="kw-2">&mut </span><span class="self">self</span>, msg: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><(), Closed> {
|
||
<span class="self">self</span>.pre_check();
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(inner) = <span class="self">self</span>.inner.as_mut() {
|
||
inner
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||
.send(Message::Ping(Bytes::copy_from_slice(msg)))
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||
.<span class="kw">await
|
||
</span>.map_err(|<span class="kw">_</span>| Closed)
|
||
} <span class="kw">else </span>{
|
||
<span class="prelude-val">Err</span>(Closed)
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Pong the client
|
||
///
|
||
/// ```rust,ignore
|
||
/// match msg {
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||
/// Message::Ping(bytes) => {
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||
/// let _ = session.pong(&bytes).await;
|
||
/// }
|
||
/// _ => (),
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||
/// }
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||
</span><span class="kw">pub async fn </span>pong(<span class="kw-2">&mut </span><span class="self">self</span>, msg: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><(), Closed> {
|
||
<span class="self">self</span>.pre_check();
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(inner) = <span class="self">self</span>.inner.as_mut() {
|
||
inner
|
||
.send(Message::Pong(Bytes::copy_from_slice(msg)))
|
||
.<span class="kw">await
|
||
</span>.map_err(|<span class="kw">_</span>| Closed)
|
||
} <span class="kw">else </span>{
|
||
<span class="prelude-val">Err</span>(Closed)
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Send a close message, and consume the session
|
||
///
|
||
/// All clones will return `Err(Closed)` if used after this call
|
||
///
|
||
/// ```rust,ignore
|
||
/// session.close(None).await
|
||
/// ```
|
||
</span><span class="kw">pub async fn </span>close(<span class="kw-2">mut </span><span class="self">self</span>, reason: <span class="prelude-ty">Option</span><CloseReason>) -> <span class="prelude-ty">Result</span><(), Closed> {
|
||
<span class="self">self</span>.pre_check();
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>(inner) = <span class="self">self</span>.inner.take() {
|
||
<span class="self">self</span>.closed.store(<span class="bool-val">true</span>, Ordering::Relaxed);
|
||
inner.send(Message::Close(reason)).<span class="kw">await</span>.map_err(|<span class="kw">_</span>| Closed)
|
||
} <span class="kw">else </span>{
|
||
<span class="prelude-val">Err</span>(Closed)
|
||
}
|
||
}
|
||
}
|
||
</code></pre></div></section></main></body></html> |