Merge pull request #2 from ChristopherBiscardi/brp-client-example-ureq

simplify client for more likely use case

Cargo.toml

@@ -385,6 +385,7 @@ smol-macros = "0.1"
 smol-hyper = "0.1"
 anyhow = "1"
 macro_rules_attribute = "0.2"
+ureq = {version = "2.10.1", features=["json"]}
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
 wasm-bindgen = { version = "0.2" }

examples/remote/client.rs

@@ -1,20 +1,9 @@
 //! A simple command line client that allows issuing queries to a remote Bevy
 //! app via the BRP.
 
-use std::process;
-
 use anyhow::Result as AnyhowResult;
 use argh::FromArgs;
 use bevy::remote::{DEFAULT_ADDR, DEFAULT_PORT};
-use http_body_util::BodyExt as _;
-use hyper::client::conn::http1;
-use hyper::header::HOST;
-use hyper::Request;
-use macro_rules_attribute::apply;
-use serde_json::Value;
-use smol::{net::TcpStream, Executor};
-use smol_hyper::rt::FuturesIo;
-use smol_macros::main;
 
 /// Struct containing the command-line arguments that can be passed to this example.
 /// The components are passed by their full type names positionally, while `host`
@@ -43,85 +32,28 @@ struct Args {
 }
 
 /// The application entry point.
-#[apply(main!)]
-async fn main(executor: &Executor<'_>) -> AnyhowResult<()> {
+fn main() -> AnyhowResult<()> {
     // Parse the arguments.
     let args: Args = argh::from_env();
 
     // Create the URL. We're going to need it to issue the HTTP request.
     let host_part = format!("{}:{}", args.host, args.port);
-    let url = format!("https://{}/", host_part)
-        .parse::<hyper::Uri>()
-        .unwrap();
+    let url = format!("http://{}/", host_part);
 
-    // Create our `smol` TCP stream.
-    let stream = TcpStream::connect(host_part).await.unwrap();
-
-    // Create a HTTP 1.x connection.
-    let (mut sender, connection) = http1::handshake::<_, String>(FuturesIo::new(stream))
-        .await
-        .unwrap();
-
-    let brp_request = format!(
-        r#"
-        {{
+    let res = ureq::post(&url)
+        .send_json(ureq::json!({
             "jsonrpc": "2.0",
             "id": 1,
             "method": "bevy/query",
-            "params": {{
-                "data": {{
-                    "components": [{}]
-                }}
-            }}
-        }}
-        "#,
-        args.components
-            .into_iter()
-            .map(|comp| format!("\"{comp}\""))
-            .reduce(|a, b| format!("{a}, {b}"))
-            .unwrap_or_else(String::new)
-    );
-
-    // Connect.
-    executor
-        .spawn(async move {
-            if let Err(error) = connection.await {
-                die(&format!("Failed to connect: {}", error));
+            "params": {
+                "data": {
+                    "components": args.components
                 }
-        })
-        .detach();
+            }
+        }))?
+        .into_json::<serde_json::Value>()?;
 
-    // We're connected, so build the HTTP request.
-    let authority = url.authority().unwrap();
-    let http_request = Request::builder()
-        .uri(&url)
-        .header(HOST, authority.as_str())
-        .body(brp_request)
-        .unwrap();
-
-    let response = match sender.send_request(http_request).await {
-        Ok(response) => response,
-        Err(error) => die(&format!("Failed to send request: {}", error)),
-    };
-
-    let body = match response.collect().await {
-        Ok(body) => body.to_bytes(),
-        Err(error) => die(&format!("Failed to receive data: {}", error)),
-    };
-
-    let response: Value = match serde_json::from_slice(&body) {
-        Ok(response) => response,
-        Err(error) => die(&format!("Failed to parse response as JSON: {}", error)),
-    };
-
-    // Just print the JSON to stdout.
-    println!("{}", serde_json::to_string_pretty(&response).unwrap());
+    println!("{:#}", res);
 
     Ok(())
 }
-
-/// Exits with an error message.
-fn die(message: &str) -> ! {
-    eprintln!("{}", message);
-    process::exit(1);
-}