WebSocket Handshake - Unexpected response code 200 - AngularJs and Spring Boot

I had a similiar problem, I was testing my websocket connection using an chrome plugin (Simple WebSocket Client) and was trying to connect to ws://localhost:8080/handler/ which is defined in my code as registry.addEndpoint("/handler").setAllowedOrigins("*").withSockJS(); but unexpected error 200 was occuring. I've fixed this by appending /websocket to my client request string on the chrome extension, so what you could try is to change in your JS file the following line:

var ws = $websocket.$new('ws://localhost:8080/socket');

to

 var ws = $websocket.$new('ws://localhost:8080/socket/websocket');

I dont know the reason why this fixed it in my case i just randomly stumbled upon it, if some1 could clarify it more it would be really nice :)

Can you try this WebsocketConfiguration configuration:

@Overridepublic void registerStompEndpoints(StompEndpointRegistry stompEndpointRegistry){    stompEndpointRegistry.addEndpoint("/socket").setAllowedOrigins("*");          stompEndpointRegistry.addEndpoint("/socket").setAllowedOrigins("*").withSockJS();}

so you have both websocket and SockJS configurations?

You need to use a sockJS client if you configure it to use sockJS on your websocket endpoint.