server-sent-events

I am using HTML5 Server-Sent Events as follows: SSEUpdate = new EventSource("http://example.com/update.php"); SSEUpdate.onmessage = function(e){ console.log(e.data); } It does not work in IE11. (Error in console: 'EventSource' is undefined ) Is there an identical Microsoft equivalent, or do I have to do something completely different? In a word, no. Microsoft has not included SSE or an equivalent of SSE in any version of IE. IMO, you have two good options: Use a polyfill - My tests with this polyfill in IE10 and IE11 were all successful. Since it starts with if ("EventSource" in global) return

I am trying to implement Server-Sent Events (SSE) inside a SharedWorker. The implementation is working with no problems in Google Chrome. However, it does not work in FireFox at all. When I try get it to work in FireFox I get this error in the console. error { target: SharedWorker, isTrusted: true, message: "ReferenceError: EventSource is not defined", filename: "https://example.com/add-ons/icws/js/worker.js", lineno: 28, colno: 0, currentTarget: SharedWorker, eventPhase: 2, bubbles: false, cancelable: true, defaultPrevented: false } How can I make EventSource available inside the SharedWorker

I am trying to unit test a Server Sent Event resource with an additional cookie. I am already using Jersey for the EventSource and JavaX for the client. The following code works fine: WebTarget target = ClientBuilder.newBuilder() .register(SseFeature.class) .build() .target("http://localhost:8080/sse"); EventSource eventSource = EventSource.target(target).build(); EventListener listener = new EventListener() { @Override public void onEvent(InboundEvent inboundEvent) { LOG.info(inboundEvent.readData(String.class)); } }; eventSource.register(listener); eventSource.open(); serverEventManager.send

Can somebody please provide me an example for spring boot server side events? Basically I need to push server side events to browser. I'm using angular 2 and spring boot backend. Please provide me 1 sample example, I'm unable to find good examples. @Controller public class SSEController { private final List<SseEmitter> emitters = new ArrayList<>(); @RequestMapping(path = "/stream", method = RequestMethod.GET) public SseEmitter stream() throws IOException { SseEmitter emitter = new SseEmitter(); emitters.add(emitter); emitter.onCompletion(() -> emitters.remove(emitter)); return emitter; } } How

The client periodically calls an async method (long polling), passing it a value of a stock symbol, which the server uses to query the database and return the object back to the client. I am using Spring's DeferredResult class, however I'm not familiar with how it works. Notice how I am using the symbol property (sent from client) to query the database for new data (see below). Perhaps there is a better approach for long polling with Spring? How do I pass the symbol property from the method deferredResult() to processQueues() ? private final Queue<DeferredResult<String>> responseBodyQueue =

I have registered a typical SSE when page loads: Client: sseTest: function(){ var source = new EventSource('mySSE'); source.onopen = function(event){ console.log("eventsource opened!"); }; source.onmessage = function(event){ var data = event.data; console.log(data); document.getElementById('sse').innerHTML+=event.data + "<br />"; }; } My Javascript-Debugger says, that "eventsource opened!" was successfully. My Server Code is a Servlet 3.0: import java.io.IOException; import java.io.PrintWriter; import java.util.Random; import javax.servlet.ServletException; import javax.servlet.http