Multiple socket io client connections in java

Question

I have to implement client functionality using https://github.com/socketio/socket.io-client-java. I have socket.io nodejs server 4.x version. I want to establish around 300-700 socket connections using threadpool ThreadPoolExecutor in a loop after some fixed delay. I have tried to implement this, the socket connections to server established but after sometimes got disconnected.Please help me figure the root cause of the issue of disconnections. I have tired

Without using threads at all.
Using singleThreadPool
Using fixedThreadPool

Using scheduledThreadPool

 ScheduledThreadPoolExecutor executor = (ScheduledThreadPoolExecutor) Executors.newScheduledThreadPool(200);
 ScheduledFuture<?> future;
 future= executor.scheduleAtFixedRate(() -> {
 for(int i=1;i<=300;i++) {

         IO.Options options = IO.Options.builder()
                 .setPath("/agent-manager/socket.io")
                 .setTransports(new String[]{Polling.NAME,WebSocket.NAME})
                 .setAuth(token)
                 .build();

          socket = IO.socket(URI.create("wss://localhost:3000"), options);
          socket.on("connect_error", new Emitter.Listener() {
             @Override
             public void call(Object... args) {
                 System.out.println(args[0]);
             }
         }).on("connect", new Emitter.Listener() {
             @Override
             public void call(Object... args) {
                 System.out.println(socket.id() +" "+i+" connected");
             }
         }).on("disconnect", new Emitter.Listener() {
             @Override
             public void call(Object... args) {
                 System.out.println(socket.id() +" "+i+" disconnected");
             }
         });
         socket.connect();
         lock.countDown();
     }
     }, 1000, delay, TimeUnit.MILLISECONDS);
     lock.await(delay, TimeUnit.MILLISECONDS);
     future.cancel(true);

In all above cases, disconnections appear after few seconds. Is there some sort of socket object ttl expiration, connection timeout, or server & client are not sending any data in some time, so due to inactivity the disconnections appears? How to keep connections sustained?

Multiple socket io client connections in java

0 Answers0