WIP

side-watcher/Cargo.toml

@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+simple-websockets = "0.1.6"

side-watcher/src/main.rs

@@ -1,3 +1,33 @@
+use std::collections::HashMap;
+
+use simple_websockets::{Event, Responder};
+
 fn main() {
-    println!("Hello, world!");
+    let event_hub = simple_websockets::launch(8080).expect("failed to listen on port 8080");
+    let mut clients: HashMap<u64, Responder> = HashMap::new();
+    println!("Listening for websocket connection...");
+    loop {
+        match event_hub.poll_event() {
+            Event::Connect(client_id, responder) => {
+                println!("A client connected with id #{}", client_id);
+                // add their Responder to our `clients` map:
+                clients.insert(client_id, responder);
+            }
+            Event::Disconnect(client_id) => {
+                println!("Client #{} disconnected.", client_id);
+                // remove the disconnected client from the clients map:
+                clients.remove(&client_id);
+            }
+            Event::Message(client_id, message) => {
+                println!(
+                    "Received a message from client #{}: {:?}",
+                    client_id, message
+                );
+                // retrieve this client's `Responder`:
+                let responder = clients.get(&client_id).unwrap();
+                // echo the message back:
+                responder.send(format!("Echo {}", message));
+            }
+        }
+    }
 }