CrashCourse on basic ws

server.js

@@ -1,8 +1,16 @@
-import {WebSocketServer} from 'ws'
+import {WebSocketServer, WebSocket} from 'ws'
 
 const wss = new WebSocketServer({port: 8081})
 
-// conmnection event 
+// connection event
+
+/**
+ * Connection types
+ * 0: connecting
+ * 1: open (the only state where you can safely .send())
+ * 2: Closing
+ * 3: closed
+ */
 
 wss.on('connection', (s, r)=>{
     const ip = r.socket.remoteAddress
@@ -11,8 +19,19 @@ wss.on('connection', (s, r)=>{
         const message = rawData.toString()
         console.log({rawData})
 
-        wss.clients.forEach((c)=>{
-            if(c.readyState === 1) c.send(`Server Broadcast: ${message}`)
+        wss.clients.forEach((client)=>{
+            // can use readyState to be === 1 or WebSocket.OPEN they mean the same thing
+            if(client.readyState === WebSocket.OPEN) client.send(`Server Broadcast: ${message}`)
         })
     })
-})
+
+    s.on("error", ()=>{
+        console.error(`Error: ${err.message}: ${ip}`)
+    })
+
+    s.on('close', ()=>{
+        console.log('Client Disconnected')
+    })
+})
+
+console.log("Server Running on 8081")