Spring Websockets STOMP - get client IP address

Question

Is there any way to obtain STOMP client IP address? I am intercepting inbound channel but I cannot see any way to check the ip address.

Any help appreciated.

Answer 1

You could set the client IP as a WebSocket session attribute during the handshake with a HandshakeInterceptor:

public class IpHandshakeInterceptor implements HandshakeInterceptor {

    public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response,
            WebSocketHandler wsHandler, Map attributes) throws Exception {

        // Set ip attribute to WebSocket session
        attributes.put("ip", request.getRemoteAddress());

        return true;
    }

    public void afterHandshake(ServerHttpRequest request, ServerHttpResponse response,
            WebSocketHandler wsHandler, Exception exception) {          
    }
}

Configure your endpoint with the handshake interceptor:

@Override
protected void configureStompEndpoints(StompEndpointRegistry registry) {
    registry.addEndpoint("/ws").addInterceptors(new IpHandshakeInterceptor()).withSockJS();
}

And get the attribute in your handler method with a header accessor:

@MessageMapping("/destination")
public void handlerMethod(SimpMessageHeaderAccessor ha) {
    String ip = (String) ha.getSessionAttributes().get("ip");
    ...
}