spring-websocket

I am currently working on a project that requires the client requesting a big job and sending it to the server. Then the server divides up the job and responds with an array of urls for the client to make a GET call on and stream back the data. I am the greenhorn on the project and I am currently using Spring websockets to improve efficiency. Instead of the clients constantly pinging the server to see if it has results ready to stream back, the websocket will now just directly contact the client hooray! Would it be a bad idea to have websockets manage the whole process from end to end? I am

According to here : The HTTP Upgrade header requests that the server switch the application-layer protocol from HTTP to the WebSocket protocol . The client handshake established a HTTP-on-TCP connection between IE10 and server. After the server returns its 101 response, the application-layer protocol switches from HTTP to WebSockets which uses the previously established TCP connection. HTTP is completely out of the picture at this point. Using the lightweight WebSocket wire protocol, messages can now be sent or received by either endpoint at any time. So, my understanding is, after the 1st

My error shows up in the console of my browser: "WebSocket connection to 'ws://localhost:32768/DspClusterWebServices/myHandler' failed: Unexpected response code: 200" I am using Spring Websockets 4.1.5 and Tomcat 8.0.18 . My WebSocketConfigurer implementation class looks like: @Configuration @Controller @EnableWebSocket public class WebSocketConfig implements WebSocketConfigurer { class MyHandler implements WebSocketHandler { @Override public void afterConnectionEstablished(WebSocketSession session) throws Exception { System.out.println("afterConntectionEstablished called"); } ...implements

Is it possible to send a message to specific session? I have an unauthenticated websocket between clients and a Spring servlet. I need to send an unsolicited message to a specific connection when an async job ends. @Controller public class WebsocketTest { @Autowired public SimpMessageSendingOperations messagingTemplate; ExecutorService executor = Executors.newSingleThreadExecutor(); @MessageMapping("/start") public void start(SimpMessageHeaderAccessor accessor) throws Exception { String applicantId=accessor.getSessionId(); executor.submit(() -> { //... slow job jobEnd(applicantId); }); }