Merge pull request #248287 from vicancy/vicancy-patch-3

Update socketio-migrate-from-self-hosted.md

Author: prmerger-automator[bot]

articles/azure-web-pubsub/socketio-migrate-from-self-hosted.md

@@ -36,24 +36,19 @@ Locate `index.js` in the server-side code.
     ```javascript
     const { useAzureSocketIO } = require("@azure/web-pubsub-socket.io");
     ```
-
-3. Add configuration so that the server can connect with your Web PubSub for Socket.IO resource.
+    
+3. Locate in your server-side code where Socket.IO server is created and wrap it with `useAzureSocketIO()`:
     ```javascript
-    const wpsOptions = {
+    const io = require("socket.io")();
+    useAzureSocketIO(io, {
         hub: "eio_hub", // The hub name can be any valid string.
         connectionString: process.argv[2]
-    };
-    ```
-	
-4. Locate in your server-side code where Socket.IO server is created and append `.useAzureSocketIO(wpsOptions)`:
-    ```javascript
-    const io = require("socket.io")();
-    useAzureSocketIO(io, wpsOptions);
+    });
     ```
->[!IMPORTANT]
-> `useAzureSocketIO` is an asynchronous method. Here we `await`. So you need to wrap it and related code in an asynchronous function.
+    >[!IMPORTANT]
+    > `useAzureSocketIO` is an asynchronous method and it does initialization steps to connect to Web PubSub. You can `await useAzureSocketIO(...)` or use `useAzureSocketIO(...).then(...)` to make sure your app server starts to serve requests after the initialization succeeds.
 
-5. If you use the following server APIs, add `async` before using them as they're asynchronous with Web PubSub for Socket.IO.
+4. If you use the following server APIs, add `async` before using them as they're asynchronous with Web PubSub for Socket.IO.
 - [server.socketsJoin](https://socket.io/docs/v4/server-api/#serversocketsjoinrooms)
 - [server.socketsLeave](https://socket.io/docs/v4/server-api/#serversocketsleaverooms)
 - [socket.join](https://socket.io/docs/v4/server-api/#socketjoinroom)