add debug server

src/debug_server.rs

@@ -1 +1,29 @@
-pub async fn debug_server() {}
+use hyper::service::{make_service_fn, service_fn};
+use hyper::{Body, Response, Server};
+use std::convert::Infallible;
+use std::net::SocketAddr;
+use std::sync::Arc;
+use tokio::sync::Mutex;
+
+use crate::ports::PortHandler;
+
+pub async fn debug_server(addr: SocketAddr, port_handler: Arc<Mutex<PortHandler>>) {
+    let server = Server::bind(&addr).serve(make_service_fn(move |_conn| {
+        let port_handler = port_handler.clone();
+        async move {
+            Ok::<_, Infallible>(service_fn(move |_req| {
+                let port_handler = port_handler.clone();
+                async move {
+                    Ok::<_, Infallible>(Response::new(Body::from(
+                        port_handler.lock().await.status_string(),
+                    )))
+                }
+            }))
+        }
+    }));
+
+    // Run this server for... forever!
+    if let Err(e) = server.await {
+        eprintln!("server error: {}", e);
+    }
+}