how to fix socket.io connection issue .

Question

I created a chat application using node js and socket.io . My application worked fine on local host but after deploying only the http request and endpoints are working . I cant connect to my socket connection . Is there any way to make it right without using azure pubsub ?

Answer 1

@Juman Das It sounds like you’re facing a common issue with Socket.IO when deploying to a production environment. Lets see if we can troubleshoot this together:

Check Server Configuration:

• Ensure your server is correctly configured to handle WebSocket connections. Sometimes, proxies or firewalls might block WebSocket traffic.
  • Verify that your server is reachable at the given URL. You can test this with a simple curl command:

        curl 
  

1. Update Client-Side Code:

• Instead of hardcoding the server URL in your client-side code, try using a relative path:

const

• This will automatically connect to the host serving the page, which can help avoid issues with mismatched URLs.

Enable CORS:

  - If your client and server are on different domains, you might need to configure CORS (Cross-Origin Resource Sharing) on your server:
  
  ```javascript
  const
  ```
  
  **Check for Errors**:
  
     - Use the `connect_error` event on the client side to get more information about why the connection is failing:
     
     ```javascript
     socket.
     ```
     
        - Similarly, on the server side, you can listen for `connection_error` events:
        
        ```javascript
        io.
        ```
        

1. Sticky Sessions:
   • If you’re using a load balancer, make sure sticky sessions are enabled. This ensures that all requests from a particular client are sent to the same server instance.
   Check Transport Methods:
   • Sometimes specifying the transport methods can help:

         const
   

These steps should help you diagnose and fix the connection issue with your Socket.IO application.