server-sent-events

问题 About jax-rs client with SSE in EJB Singleton, I've tried with Payara server full-5.183 (without docker) for this example, [https://abhirockzz.wordpress.com/2017/07/27/jax-rs-2-1-sse-client-api-example-using-glassfish-5-on-docker/], but failed. Error shown at line eventSource = SseEventSource.target(target).build(); @PostConstruct public void init() { this.sseClient = ClientBuilder.newClient(); this.target = this.sseClient.target("https://sse.now.sh"); tsvc.createSingleActionTimer(15000, null

问题 I have a small app that sends Server Sent Events. I would like to load test my app so I can benchmark the latency from the time a message is pushed to the time the message is received so I can know when/where the performance breaks down. What tools are available to be able to do this? 回答1: Since Server-Sent Events it is just HTTP you can use siege utility. Here is the example: siege -b -t 1m -c45 http://127.0.0.1:9292/streaming Where: -b benchmark mode i.e. don't wait between connections -t

问题 I'm trying push notifications using service workers. use my own server to send notifications and eventSource is used to establish the connection. after i open the webpage service worker is running perfectly. but it stops after few seconds. what i want is to run service worker without getting stopped. i want it to run until the browser is opened. can anyone recommend a way to do that. ? this is my ServiceWorker JS /** * */ 'use strict'; var eventSource2 = new EventSource("Servlet"); console

问题 I'm using server send event to display a notification.I have created a service worker and i used EventSource to connect with the server (in my case i used a servlet. ) once i run the project. everything is working fine. but the contents inside the event execute countiously. I want to know why? my other question is once i close the tab. it stops sending notification. service worker is nunning and server also running. but why it stops? this is my service worker code. var eventSource = new

问题 Given a simple controller with a method like this: @RequestMapping(method = RequestMethod.GET, value = "{id}/update") public ResponseEntity<SseEmitter> update() throws IOException { final SseEmitter sseEmitter = new SseEmitter(); return ResponseEntity.ok(sseEmitter); } I tried it this way also: @RequestMapping(method = RequestMethod.GET, value = "{id}/update") public SseEmitter update() throws IOException { final SseEmitter sseEmitter = new SseEmitter(); return sseEmitter; } But both way

问题 I've got a block of code here that uses HTML 5 SSE - the EventSource object, which lets a php script push updates to the webpage. However, I'm interested in also passing parameters to the script. How can I do that? Here's the code: if(typeof(EventSource) !== "undefined") { var source = new EventSource("get_message.php"); source.onmessage=function(event) { document.getElementById("message-window").innerHTML+=event.data + "<br>"; }; } else { document.getElementById("message-window").innerHTML=

问题 I am trying to communicate with a server using an API. to make it easier I wrote a script that will communicate the API using a php script. My goal is to make a query to the API every second to see if there is new message in their queue. I was advised to use server-sent events method and have the server send a respond to the client only when it has something new. Here is my php script <?php // Register autoloader function spl_autoload_register('apiAutoloader'); header("Content-Type: text

问题 We are using Jersey Server-Sent Events (SSE) to allow remote components of our application to listen to events raised by our Jersey/Tomcat server. This works great. However, it is crucial that our server have an accurate list of currently-connected listeners (our remote components). To this end, our server sends a tiny message to each caller (via eventOutput.write) once every five seconds. If our remote component is shut down while SSE-connected, or if the remote computer is powered off while

问题 A bit confused about EventSource behavior. It connects well and stays connected until it receives first message. As i send a data: something\n\n message, the connection is dropped and new one created. Using Content-Type: text/event-stream header and the connection are recognized as a event stream and the inspector shows pending status. As i said, everything works well until i send first message. After this the connection are interrupted and new one created and message not sent to browser(at

问题 Does anyone know if it is possible to send basic http authentication credentials with EventSource? 回答1: EventSource is about the server sending events to the client. I think you need bidirectional communication for authentication. How would you otherwise send the actual credentials? WebSockets, however, can achieve that. Is that what you are looking for? Update: You can achieve what you want by utilizing cookies, as pointed out by 4esn0k. Cookies are sent along with the initial request that