Websocket Invalid Handshake Response 403


I am trying to troubleshoot my script in Gatling. It’s utilizing the websocket.

When I run the script with 1 user. Everything is fine. But when I run with multiple users, I am getting io.netty.handler.codec.websocketx.WevSocketClientHandshakeException: Invalid habdshake response getStatus: 403

I am also seeing in KOs which adds mystery on the issue.

Hoping someone can help me with this.

I’d say that you’re using an auth token that’s only valid once.