More robust asset paths in examples (#1090)

* More robust asset paths in examples

* Update examples/low-level-rustls/src/main.rs

Co-authored-by: Jonas Platte <jplatte+git@posteo.de>

* format

Co-authored-by: Jonas Platte <jplatte+git@posteo.de>

examples/low-level-rustls/src/main.rs

@@ -11,7 +11,14 @@ use hyper::server::{
     conn::{AddrIncoming, Http},
 };
 use rustls_pemfile::{certs, pkcs8_private_keys};
-use std::{fs::File, io::BufReader, net::SocketAddr, pin::Pin, sync::Arc};
+use std::{
+    fs::File,
+    io::BufReader,
+    net::SocketAddr,
+    path::{Path, PathBuf},
+    pin::Pin,
+    sync::Arc,
+};
 use tokio::net::TcpListener;
 use tokio_rustls::{
     rustls::{Certificate, PrivateKey, ServerConfig},
@@ -30,8 +37,12 @@ async fn main() {
         .init();
 
     let rustls_config = rustls_server_config(
-        "examples/tls-rustls/self_signed_certs/key.pem",
-        "examples/tls-rustls/self_signed_certs/cert.pem",
+        PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+            .join("self_signed_certs")
+            .join("key.pem"),
+        PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+            .join("self_signed_certs")
+            .join("cert.pem"),
     );
 
     let acceptor = TlsAcceptor::from(rustls_config);
@@ -65,7 +76,7 @@ async fn handler(ConnectInfo(addr): ConnectInfo<SocketAddr>) -> String {
     addr.to_string()
 }
 
-fn rustls_server_config(key: &str, cert: &str) -> Arc<ServerConfig> {
+fn rustls_server_config(key: impl AsRef<Path>, cert: impl AsRef<Path>) -> Arc<ServerConfig> {
     let mut key_reader = BufReader::new(File::open(key).unwrap());
     let mut cert_reader = BufReader::new(File::open(cert).unwrap());
 

examples/sse/src/main.rs

@@ -12,7 +12,7 @@ use axum::{
     Router,
 };
 use futures::stream::{self, Stream};
-use std::{convert::Infallible, net::SocketAddr, time::Duration};
+use std::{convert::Infallible, net::SocketAddr, path::PathBuf, time::Duration};
 use tokio_stream::StreamExt as _;
 use tower_http::{services::ServeDir, trace::TraceLayer};
 use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
@@ -27,14 +27,17 @@ async fn main() {
         .with(tracing_subscriber::fmt::layer())
         .init();
 
-    let static_files_service =
-        get_service(ServeDir::new("examples/sse/assets").append_index_html_on_directories(true))
-            .handle_error(|error: std::io::Error| async move {
-                (
-                    StatusCode::INTERNAL_SERVER_ERROR,
-                    format!("Unhandled internal error: {}", error),
-                )
-            });
+    let assets_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("assets");
+
+    let static_files_service = get_service(
+        ServeDir::new(assets_dir).append_index_html_on_directories(true),
+    )
+    .handle_error(|error: std::io::Error| async move {
+        (
+            StatusCode::INTERNAL_SERVER_ERROR,
+            format!("Unhandled internal error: {}", error),
+        )
+    });
 
     // build our application with a route
     let app = Router::new()
@@ -59,7 +62,7 @@ async fn sse_handler(
     // A `Stream` that repeats an event every second
     let stream = stream::repeat_with(|| Event::default().data("hi!"))
         .map(Ok)
-        .throttle(Duration::from_secs(10));
+        .throttle(Duration::from_secs(1));
 
     Sse::new(stream).keep_alive(
         axum::response::sse::KeepAlive::new()

examples/tls-rustls/src/main.rs

@@ -6,7 +6,7 @@
 
 use axum::{routing::get, Router};
 use axum_server::tls_rustls::RustlsConfig;
-use std::net::SocketAddr;
+use std::{net::SocketAddr, path::PathBuf};
 use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
 
 #[tokio::main]
@@ -19,8 +19,12 @@ async fn main() {
         .init();
 
     let config = RustlsConfig::from_pem_file(
-        "examples/tls-rustls/self_signed_certs/cert.pem",
-        "examples/tls-rustls/self_signed_certs/key.pem",
+        PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+            .join("self_signed_certs")
+            .join("cert.pem"),
+        PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+            .join("self_signed_certs")
+            .join("key.pem"),
     )
     .await
     .unwrap();

examples/websockets/src/main.rs

@@ -16,7 +16,7 @@ use axum::{
     routing::{get, get_service},
     Router,
 };
-use std::net::SocketAddr;
+use std::{net::SocketAddr, path::PathBuf};
 use tower_http::{
     services::ServeDir,
     trace::{DefaultMakeSpan, TraceLayer},
@@ -32,7 +32,9 @@ async fn main() {
         ))
         .with(tracing_subscriber::fmt::layer())
         .init();
-    let assets_dir = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("assets");
+
+    let assets_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("assets");
+
     // build our application with some routes
     let app = Router::new()
         .fallback(