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dioxus-mirror
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                <ol class="chapter"><li class="chapter-item expanded affix "><a href="../index.html">Introduction</a></li><li class="chapter-item expanded "><a href="../getting_started/index.html"><strong aria-hidden="true">1.</strong> Getting Started</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../getting_started/desktop.html"><strong aria-hidden="true">1.1.</strong> Desktop</a></li><li class="chapter-item expanded "><a href="../getting_started/web.html"><strong aria-hidden="true">1.2.</strong> Web</a></li><li class="chapter-item expanded "><a href="../getting_started/ssr.html" class="active"><strong aria-hidden="true">1.3.</strong> Server-Side Rendering</a></li><li class="chapter-item expanded "><a href="../getting_started/fullstack.html"><strong aria-hidden="true">1.4.</strong> Fullstack</a></li><li class="chapter-item expanded "><a href="../getting_started/liveview.html"><strong aria-hidden="true">1.5.</strong> Liveview</a></li><li class="chapter-item expanded "><a href="../getting_started/tui.html"><strong aria-hidden="true">1.6.</strong> Terminal UI</a></li><li class="chapter-item expanded "><a href="../getting_started/mobile.html"><strong aria-hidden="true">1.7.</strong> Mobile</a></li><li class="chapter-item expanded "><a href="../getting_started/hot_reload.html"><strong aria-hidden="true">1.8.</strong> Hot Reloading</a></li></ol></li><li class="chapter-item expanded "><a href="../describing_ui/index.html"><strong aria-hidden="true">2.</strong> Describing the UI</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../describing_ui/special_attributes.html"><strong aria-hidden="true">2.1.</strong> Special Attributes</a></li><li class="chapter-item expanded "><a href="../describing_ui/components.html"><strong aria-hidden="true">2.2.</strong> Components</a></li><li class="chapter-item expanded "><a href="../describing_ui/component_props.html"><strong aria-hidden="true">2.3.</strong> Props</a></li><li class="chapter-item expanded "><a href="../describing_ui/component_children.html"><strong aria-hidden="true">2.4.</strong> Component Children</a></li></ol></li><li class="chapter-item expanded "><a href="../interactivity/index.html"><strong aria-hidden="true">3.</strong> Interactivity</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../interactivity/event_handlers.html"><strong aria-hidden="true">3.1.</strong> Event Listeners</a></li><li class="chapter-item expanded "><a href="../interactivity/hooks.html"><strong aria-hidden="true">3.2.</strong> Hooks &amp; 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                        <h1 id="server-side-rendering"><a class="header" href="#server-side-rendering">Server-Side Rendering</a></h1>
<p>For lower-level control over the rendering process, you can use the <code>dioxus-ssr</code> crate directly. This can be useful when integrating with a web framework that <code>dioxus-server</code> does not support, or pre-rendering pages.</p>
<h2 id="setup"><a class="header" href="#setup">Setup</a></h2>
<p>For this guide, we're going to show how to use Dioxus SSR with <a href="https://docs.rs/axum/latest/axum/">Axum</a>.</p>
<p>Make sure you have Rust and Cargo installed, and then create a new project:</p>
<pre><code class="language-shell">cargo new --bin demo
cd demo
</code></pre>
<p>Add Dioxus and the ssr renderer as dependencies:</p>
<pre><code class="language-shell">cargo add dioxus
cargo add dioxus-ssr
</code></pre>
<p>Next, add all the Axum dependencies. This will be different if you're using a different Web Framework</p>
<pre><code>cargo add tokio --features full
cargo add axum
</code></pre>
<p>Your dependencies should look roughly like this:</p>
<pre><code class="language-toml">[dependencies]
axum = &quot;0.4.5&quot;
dioxus = { version = &quot;*&quot; }
dioxus-ssr = { version = &quot;*&quot; }
tokio = { version = &quot;1.15.0&quot;, features = [&quot;full&quot;] }
</code></pre>
<p>Now, set up your Axum app to respond on an endpoint.</p>
<pre><pre class="playground"><code class="language-rust edition2018">#![allow(non_snake_case)]
use axum::{response::Html, routing::get, Router};
// import the prelude to get access to the `rsx!` macro and the `Scope` and `Element` types
use dioxus::prelude::*;

#[tokio::main]
async fn main() {
    let addr = std::net::SocketAddr::from(([127, 0, 0, 1], 3000));
    println!(&quot;listening on http://{}&quot;, addr);

    axum::Server::bind(&amp;addr)
        .serve(
            Router::new()
                .route(&quot;/&quot;, get(app_endpoint))
                .into_make_service(),
        )
        .await
        .unwrap();
}

</code></pre></pre>
<p>And then add our endpoint. We can either render <code>rsx!</code> directly:</p>
<pre><pre class="playground"><code class="language-rust edition2018">
<span class="boring">#![allow(unused)]
</span><span class="boring">fn main() {
</span>async fn app_endpoint() -&gt; Html&lt;String&gt; {
    // render the rsx! macro to HTML
    Html(dioxus_ssr::render_lazy(rsx! {
        div { &quot;hello world!&quot; }
    }))
}
<span class="boring">}
</span></code></pre></pre>
<p>Or we can render VirtualDoms.</p>
<pre><pre class="playground"><code class="language-rust edition2018">
<span class="boring">#![allow(unused)]
</span><span class="boring">fn main() {
</span>async fn second_app_endpoint() -&gt; Html&lt;String&gt; {
    // create a component that renders a div with the text &quot;hello world&quot;
    fn app(cx: Scope) -&gt; Element {
        cx.render(rsx!(div { &quot;hello world&quot; }))
    }
    // create a VirtualDom with the app component
    let mut app = VirtualDom::new(app);
    // rebuild the VirtualDom before rendering
    let _ = app.rebuild();

    // render the VirtualDom to HTML
    Html(dioxus_ssr::render(&amp;app))
}
<span class="boring">}
</span></code></pre></pre>
<p>And then add our app component:</p>
<pre><pre class="playground"><code class="language-rust edition2018">
<span class="boring">#![allow(unused)]
</span><span class="boring">fn main() {
</span>// define a component that renders a div with the text &quot;Hello, world!&quot;
fn App(cx: Scope) -&gt; Element {
    cx.render(rsx! {
        div {
            &quot;Hello, world!&quot;
        }
    })
}
<span class="boring">}
</span></code></pre></pre>
<p>And that's it!</p>
<h2 id="multithreaded-support"><a class="header" href="#multithreaded-support">Multithreaded Support</a></h2>
<p>The Dioxus VirtualDom, sadly, is not currently <code>Send</code>. Internally, we use quite a bit of interior mutability which is not thread-safe.
When working with web frameworks that require <code>Send</code>, it is possible to render a VirtualDom immediately to a String – but you cannot hold the VirtualDom across an await point. For retained-state SSR (essentially LiveView), you'll need to spawn a VirtualDom on its own thread and communicate with it via channels or create a pool of VirtualDoms.
You might notice that you cannot hold the VirtualDom across an await point. Because Dioxus is currently not ThreadSafe, it <em>must</em> remain on the thread it started. We are working on loosening this requirement.</p>

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