Socket.IO – Error Handling

Errors Handling

We have worked on local servers until now, which will almost never give us errors related to connections, timeouts, etc. However, in real life production environments, handling such errors are of utmost importance. Therefore, we will now discuss how we can handle connection errors on the client side.

The client API provides us with following built in events โˆ’

  • Connect โˆ’ When the client successfully connects.
  • Connecting โˆ’ When the client is in the process of connecting.
  • Disconnect โˆ’ When the client is disconnected.
  • Connect_failed โˆ’ When the connection to the server fails.
  • Error โˆ’ An error event is sent from the server.
  • Message โˆ’ When the server sends a message using the send function.
  • Reconnect โˆ’ When reconnection to the server is successful.
  • Reconnecting โˆ’ When the client is in the process of connecting.
  • Reconnect_failed โˆ’ When the reconnection attempt fails.

To handle errors, we can handle these events using the out-socket object that we created on our client.

For example โ€“ If we have a connection that fails, we can use the following code to connect to the server again โˆ’

socket.on('connect_failed', function() {
   document.write("Sorry, there seems to be an issue with the connection!");
})

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