rename package to dioxus-fullstack
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Evan Almloff committed
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//! Dioxus utilities for the [Warp](https://docs.rs/warp/latest/warp/index.html) server framework.
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//!
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//! # Example
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//! ```rust
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//! #![allow(non_snake_case)]
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//! use dioxus::prelude::*;
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//! use dioxus_fullstack::prelude::*;
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//!
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//! fn main() {
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//! #[cfg(feature = "web")]
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//! dioxus_web::launch_cfg(app, dioxus_web::Config::new().hydrate(true));
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//! #[cfg(feature = "ssr")]
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//! {
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//! GetServerData::register().unwrap();
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//! tokio::runtime::Runtime::new()
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//! .unwrap()
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//! .block_on(async move {
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//! let routes = serve_dioxus_application("", ServeConfigBuilder::new(app, ()));
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//! warp::serve(routes).run(([127, 0, 0, 1], 8080)).await;
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//! });
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//! }
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//! }
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//!
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//! fn app(cx: Scope) -> Element {
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//! let text = use_state(cx, || "...".to_string());
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//!
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//! cx.render(rsx! {
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//! button {
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//! onclick: move |_| {
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//! to_owned![text];
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//! async move {
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//! if let Ok(data) = get_server_data().await {
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//! text.set(data);
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//! }
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//! }
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//! },
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//! "Run a server function"
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//! }
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//! "Server said: {text}"
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//! })
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//! }
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//!
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//! #[server(GetServerData)]
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//! async fn get_server_data() -> Result<String, ServerFnError> {
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//! Ok("Hello from the server!".to_string())
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//! }
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//!
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//! ```
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use crate::{
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prelude::*, render::SSRState, serve_config::ServeConfig, server_fn::DioxusServerFnRegistry,
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};
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use dioxus_core::VirtualDom;
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use server_fn::{Encoding, Payload, ServerFunctionRegistry};
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use std::error::Error;
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use std::sync::Arc;
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use tokio::task::spawn_blocking;
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use warp::path::FullPath;
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use warp::{
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filters::BoxedFilter,
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http::{Response, StatusCode},
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hyper::body::Bytes,
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path, Filter, Reply,
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};
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/// Registers server functions with a custom handler function. This allows you to pass custom context to your server functions by generating a [`DioxusServerContext`] from the request.
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///
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/// # Example
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/// ```rust
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/// use warp::{body, header, hyper::HeaderMap, path, post, Filter};
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///
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/// #[tokio::main]
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/// async fn main() {
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/// let routes = register_server_fns_with_handler("", |full_route, func| {
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/// path(full_route)
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/// .and(post())
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/// .and(header::headers_cloned())
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/// .and(body::bytes())
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/// .and_then(move |headers: HeaderMap, body| {
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/// let func = func.clone();
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/// async move {
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/// // Add the headers to the server function context
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/// server_fn_handler((headers.clone(),), func, headers, body).await
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/// }
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/// })
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/// });
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/// warp::serve(routes).run(([127, 0, 0, 1], 8080)).await;
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/// }
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/// ```
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pub fn register_server_fns_with_handler<H, F, R>(
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server_fn_route: &'static str,
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mut handler: H,
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) -> BoxedFilter<(R,)>
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where
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H: FnMut(String, ServerFunction) -> F,
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F: Filter<Extract = (R,), Error = warp::Rejection> + Send + Sync + 'static,
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F::Extract: Send,
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R: Reply + 'static,
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{
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let mut filter: Option<BoxedFilter<F::Extract>> = None;
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for server_fn_path in DioxusServerFnRegistry::paths_registered() {
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let func = DioxusServerFnRegistry::get(server_fn_path).unwrap();
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let full_route = format!("{server_fn_route}/{server_fn_path}")
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.trim_start_matches('/')
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.to_string();
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let route = handler(full_route, func.clone()).boxed();
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if let Some(boxed_filter) = filter.take() {
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filter = Some(boxed_filter.or(route).unify().boxed());
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} else {
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filter = Some(route);
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}
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}
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filter.expect("No server functions found")
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}
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/// Registers server functions with the default handler. This handler function will pass an empty [`DioxusServerContext`] to your server functions.
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///
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/// # Example
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/// ```rust
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/// use dioxus_fullstack::prelude::*;
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///
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/// #[tokio::main]
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/// async fn main() {
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/// let routes = register_server_fns("");
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/// warp::serve(routes).run(([127, 0, 0, 1], 8080)).await;
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/// }
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/// ```
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pub fn register_server_fns(server_fn_route: &'static str) -> BoxedFilter<(impl Reply,)> {
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register_server_fns_with_handler(server_fn_route, |full_route, func| {
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path(full_route.clone())
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.and(warp::post().or(warp::get()).unify())
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.and(request_parts())
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.and(warp::body::bytes())
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.and_then(move |parts, bytes| {
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let func = func.clone();
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async move {
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server_fn_handler(DioxusServerContext::default(), func, parts, bytes).await
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}
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})
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})
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}
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/// Serves the Dioxus application. This will serve a complete server side rendered application.
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/// This will serve static assets, server render the application, register server functions, and intigrate with hot reloading.
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///
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/// # Example
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/// ```rust
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/// #![allow(non_snake_case)]
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/// use dioxus::prelude::*;
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/// use dioxus_fullstack::prelude::*;
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///
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/// #[tokio::main]
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/// async fn main() {
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/// let routes = serve_dioxus_application("", ServeConfigBuilder::new(app, ()));
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/// warp::serve(routes).run(([127, 0, 0, 1], 8080)).await;
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/// }
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///
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/// fn app(cx: Scope) -> Element {
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/// todo!()
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/// }
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/// ```
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pub fn serve_dioxus_application<P: Clone + serde::Serialize + Send + Sync + 'static>(
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server_fn_route: &'static str,
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cfg: impl Into<ServeConfig<P>>,
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) -> BoxedFilter<(impl Reply,)> {
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let cfg = cfg.into();
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// Serve the dist folder and the index.html file
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let serve_dir = warp::fs::dir(cfg.assets_path);
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connect_hot_reload()
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.or(register_server_fns(server_fn_route))
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.or(warp::path::end().and(render_ssr(cfg)))
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.or(serve_dir)
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.boxed()
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}
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/// Server render the application.
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pub fn render_ssr<P: Clone + serde::Serialize + Send + Sync + 'static>(
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cfg: ServeConfig<P>,
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) -> impl Filter<Extract = (impl Reply,), Error = warp::Rejection> + Clone {
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warp::get()
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.and(request_parts())
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.and(with_ssr_state())
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.map(move |parts, renderer: SSRState| {
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let parts = Arc::new(parts);
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let server_context = DioxusServerContext::new(parts);
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let mut vdom = VirtualDom::new_with_props(cfg.app, cfg.props.clone())
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.with_root_context(server_context.clone());
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let _ = vdom.rebuild();
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let html = renderer.render_vdom(&vdom, &cfg);
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let mut res = Response::builder();
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*res.headers_mut().expect("empty request should be valid") =
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server_context.take_responce_headers();
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res.header("Content-Type", "text/html")
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.body(Bytes::from(html))
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.unwrap()
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})
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}
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/// An extractor for the request parts (used in [DioxusServerContext]). This will extract the method, uri, query, and headers from the request.
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pub fn request_parts(
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) -> impl Filter<Extract = (RequestParts,), Error = warp::reject::Rejection> + Clone {
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warp::method()
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.and(warp::filters::path::full())
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.and(
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warp::filters::query::raw()
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.or(warp::any().map(String::new))
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.unify(),
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)
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.and(warp::header::headers_cloned())
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.and_then(move |method, path: FullPath, query, headers| async move {
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http::uri::Builder::new()
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.path_and_query(format!("{}?{}", path.as_str(), query))
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.build()
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.map_err(|err| {
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warp::reject::custom(FailedToReadBody(format!("Failed to build uri: {}", err)))
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})
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.map(|uri| RequestParts {
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method,
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uri,
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headers,
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..Default::default()
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})
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})
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}
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fn with_ssr_state() -> impl Filter<Extract = (SSRState,), Error = std::convert::Infallible> + Clone
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{
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let state = SSRState::default();
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warp::any().map(move || state.clone())
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}
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#[derive(Debug)]
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struct FailedToReadBody(String);
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impl warp::reject::Reject for FailedToReadBody {}
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#[derive(Debug)]
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struct RecieveFailed(String);
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impl warp::reject::Reject for RecieveFailed {}
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/// A default handler for server functions. It will deserialize the request body, call the server function, and serialize the response.
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pub async fn server_fn_handler(
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server_context: impl Into<DioxusServerContext>,
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function: ServerFunction,
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parts: RequestParts,
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body: Bytes,
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) -> Result<Box<dyn warp::Reply>, warp::Rejection> {
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let mut server_context = server_context.into();
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let parts = Arc::new(parts);
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server_context.parts = parts.clone();
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// Because the future returned by `server_fn_handler` is `Send`, and the future returned by this function must be send, we need to spawn a new runtime
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let (resp_tx, resp_rx) = tokio::sync::oneshot::channel();
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spawn_blocking({
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move || {
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tokio::runtime::Runtime::new()
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.expect("couldn't spawn runtime")
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.block_on(async move {
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let query = parts
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.uri
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.query()
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.unwrap_or_default()
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.as_bytes()
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.to_vec()
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.into();
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let data = match &function.encoding {
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Encoding::Url | Encoding::Cbor => &body,
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Encoding::GetJSON | Encoding::GetCBOR => &query,
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};
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let resp = match (function.trait_obj)(server_context.clone(), data).await {
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Ok(serialized) => {
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// if this is Accept: application/json then send a serialized JSON response
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let accept_header = parts
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.headers
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.get("Accept")
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.as_ref()
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.and_then(|value| value.to_str().ok());
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let mut res = Response::builder();
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*res.headers_mut().expect("empty request should be valid") =
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server_context.take_responce_headers();
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if accept_header == Some("application/json")
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|| accept_header
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== Some(
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"application/\
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x-www-form-urlencoded",
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)
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|| accept_header == Some("application/cbor")
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{
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res = res.status(StatusCode::OK);
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}
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let resp = match serialized {
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Payload::Binary(data) => res
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.header("Content-Type", "application/cbor")
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.body(Bytes::from(data)),
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Payload::Url(data) => res
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.header(
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"Content-Type",
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"application/\
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x-www-form-urlencoded",
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)
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.body(Bytes::from(data)),
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Payload::Json(data) => res
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.header("Content-Type", "application/json")
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.body(Bytes::from(data)),
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};
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Box::new(resp.unwrap())
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}
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Err(e) => report_err(e),
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};
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if resp_tx.send(resp).is_err() {
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eprintln!("Error sending response");
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}
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})
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}
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});
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resp_rx.await.map_err(|err| {
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warp::reject::custom(RecieveFailed(format!("Failed to recieve response {err}")))
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})
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}
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fn report_err<E: Error>(e: E) -> Box<dyn warp::Reply> {
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Box::new(
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Response::builder()
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.status(StatusCode::INTERNAL_SERVER_ERROR)
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.body(format!("Error: {}", e))
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.unwrap(),
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) as Box<dyn warp::Reply>
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}
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/// Register the web RSX hot reloading endpoint. This will enable hot reloading for your application in debug mode when you call [`dioxus_hot_reload::hot_reload_init`].
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///
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/// # Example
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/// ```rust
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/// #![allow(non_snake_case)]
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/// use dioxus_fullstack::prelude::*;
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///
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/// #[tokio::main]
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/// async fn main() {
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/// let routes = connect_hot_reload();
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/// warp::serve(routes).run(([127, 0, 0, 1], 8080)).await;
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/// }
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/// ```
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pub fn connect_hot_reload() -> impl Filter<Extract = (impl Reply,), Error = warp::Rejection> + Clone
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{
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#[cfg(not(all(debug_assertions, feature = "hot-reload", feature = "ssr")))]
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{
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warp::path!("_dioxus" / "hot_reload")
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.and(warp::ws())
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.map(warp::reply)
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.map(|reply| warp::reply::with_status(reply, warp::http::StatusCode::NOT_FOUND));
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}
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#[cfg(all(debug_assertions, feature = "hot-reload", feature = "ssr"))]
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{
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use crate::hot_reload::HotReloadState;
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use futures_util::sink::SinkExt;
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use futures_util::StreamExt;
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use warp::ws::Message;
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let hot_reload = warp::path!("_dioxus" / "hot_reload")
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.and(warp::any().then(|| crate::hot_reload::spawn_hot_reload()))
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.and(warp::ws())
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.map(move |state: &'static HotReloadState, ws: warp::ws::Ws| {
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#[cfg(all(debug_assertions, feature = "hot-reload", feature = "ssr"))]
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ws.on_upgrade(move |mut websocket| {
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async move {
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println!("🔥 Hot Reload WebSocket connected");
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{
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// update any rsx calls that changed before the websocket connected.
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{
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println!("🔮 Finding updates since last compile...");
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let templates_read = state.templates.read().await;
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for template in &*templates_read {
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if websocket
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.send(Message::text(
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serde_json::to_string(&template).unwrap(),
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))
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.await
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.is_err()
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{
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return;
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}
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}
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}
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println!("finished");
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}
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let mut rx = tokio_stream::wrappers::WatchStream::from_changes(
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state.message_receiver.clone(),
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);
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while let Some(change) = rx.next().await {
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if let Some(template) = change {
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let template = { serde_json::to_string(&template).unwrap() };
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if websocket.send(Message::text(template)).await.is_err() {
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break;
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};
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}
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}
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}
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})
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});
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let disconnect =
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warp::path!("_dioxus" / "disconnect")
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.and(warp::ws())
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.map(move |ws: warp::ws::Ws| {
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println!("disconnect");
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#[cfg(all(debug_assertions, feature = "hot-reload", feature = "ssr"))]
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ws.on_upgrade(move |mut websocket| async move {
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struct DisconnectOnDrop(Option<warp::ws::WebSocket>);
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impl Drop for DisconnectOnDrop {
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fn drop(&mut self) {
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let _ = self.0.take().unwrap().close();
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}
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}
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let _ = websocket.send(Message::text("connected")).await;
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let mut ws = DisconnectOnDrop(Some(websocket));
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loop {
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if ws.0.as_mut().unwrap().next().await.is_none() {
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break;
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}
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}
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})
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});
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disconnect.or(hot_reload)
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}
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}
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