Open-IM-Server | Instant messaging server | Websocket library

public function postUpdate(Room $entity, LifecycleEventArgs $_)
{
    try {
        Loop::run(function() use ($entityName, $id) {
        $conn = yield connect('ws://localhost:8080');
        yield $conn->send(json_encode(['message' => $entityName, 'data' => ['duid' => $id]]));
        $conn->close();});
    } catch (Exception $e) {}
}

function onMessage(ConnectionInterface $from, $msg)
{
    try {
        $messageData = json_decode($msg);
        switch ($messageData->message) {
            case BookingSocketActions::ROOM_CHANGED_EVENT:
//                $room = $this->entityManager->getRepository('ResourcesBundle:Room')
//                                            ->find(['id' => $id]);
                $room = $this->entityManager->getRepository('ResourcesBundle:Room')
                                            ->findRoomDetailById($messageData->data->duid);
                // $this->entityManager->clear();
                $this->entityManager->refresh($room);
                break;
        }
    } catch (Exception $ex) {
        $from->send($ex);
    }
}

this.hubConnection = new signalR.HubConnectionBuilder()
  .withUrl(`${environment.bzApiBaseUrl}/hubs/heartbeat`, {
    accessTokenFactory: () => token
  })
  .build();

this.hubConnection
  .start()
  .then(() => {
    console.log('SignalR: Heartbeat - connection started');

    this.hubConnection.on('beat', () => {
      console.log('SignalR: Heartbeat - Heartbeat received');
    });
  })
  .catch(err => console.log('SignalR: Heartbeat - error while starting connection: ' + err));
  });

services.AddCors(options =>
{
    options.AddPolicy(
        name: MyAllowSpecificOrigins,
        builder =>
        {
            builder
                .WithOrigins(CorsSettings.TargetDomain)
                .AllowAnyHeader()
                .AllowAnyMethod()
                .SetIsOriginAllowed((host) => true)
                .AllowCredentials();
        });
});

app.UseStaticFiles();
app.UseRouting();
app.UseCors(MyAllowSpecificOrigins);
app.UseAuthentication();
app.UseAuthorization();

app.UseEndpoints(e =>
{
    e.MapControllers();
    e.MapHub("/api/hubs/heartbeat");
});

WebSocketTransport.js:70 
WebSocket connection to 'ws://localhost:33258/api/hubs/heartbeat?id=BpBytwkEatklNR-XqGtabA&access_token=eyJ0eXAiOiJKV1QiLCJhbGci... failed:

Utils.js:190 
Error: Failed to start the transport 'WebSockets': undefined

dashboard:1 
Access to resource at 'http://localhost:33258/api/hubs/heartbeat?id=iWuMeeOKkWCUa8X9z7jXyA&access_token=eyJ0eXAiOiJKV1QiLCJhbGci...' from origin 'http://localhost:4200' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

app.UseEndpoints(e =>
{
    e.MapControllers();
    e.MapHub("/api/hubs/heartbeat", options =>
    {
        options.Transports = HttpTransportType.LongPolling;
    });
});

Information: Normalizing '_blazor' to 'http://192.168.178.35/_blazor'.

blazor.server.js:1 WebSocket connection to 'ws://192.168.178.35/_blazor?id=wnPt_fXa9H4Jpia530vPWQ' failed:

Information: (WebSockets transport) There was an error with the transport.

Error: Failed to start the transport 'WebSockets': Error: WebSocket failed to connect. The connection could not be found on the server, either the endpoint may not be a SignalR endpoint, the connection ID is not present on the server, or there is a proxy blocking WebSockets. If you have multiple servers check that sticky sessions are enabled.

Warning: Failed to connect via WebSockets, using the Long Polling fallback transport. This may be due to a VPN or proxy blocking the connection. To troubleshoot this, visit https://aka.ms/blazor-server-using-fallback-long-polling.

@sock.route('/api')
def echo(sock):
    while True:
        # get user input from browser
        user_input = sock.receive()
        # print user input on console
        print(user_input)
        # read answer from console
        response = input()
        # send response to browser
        sock.send(response)

while True:
    question = input("")
    ints = predict(question)
    answer = response(ints, json_data)
    print(answer)

def predict(sentence):
    bag_of_words = convert_sentence_in_bag_of_words(sentence)
    # pass bag as list and get index 0
    prediction = model.predict(np.array([bag_of_words]))[0]
    ERROR_THRESHOLD = 0.25
    accepted_results = [[tag, probability] for tag, probability in enumerate(prediction) if probability > ERROR_THRESHOLD]

    accepted_results.sort(key=lambda x: x[1], reverse=True)

    output = []
    for accepted_result in accepted_results:
        output.append({'intent': classes[accepted_result[0]], 'probability': str(accepted_result[1])})
        print(output)
    return output


def response(intents, json):
    tag = intents[0]['intent']
    intents_as_list = json['intents']
    for i in intents_as_list:
        if i['tag'] == tag:
            res = random.choice(i['responses'])
            break
    return res

 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Serving Flask app 'server' (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: on

2022-02-13 11:31:38.887640: I tensorflow/core/common_runtime/pluggable_device/pluggable_device_factory.cc:305] Could not identify NUMA node of platform GPU ID 0, defaulting to 0. Your kernel may not have been built with NUMA support.
2022-02-13 11:31:38.887734: I tensorflow/core/common_runtime/pluggable_device/pluggable_device_factory.cc:271] Created TensorFlow device (/job:localhost/replica:0/task:0/device:GPU:0 with 0 MB memory) -> physical PluggableDevice (device: 0, name: METAL, pci bus id: )
Metal device set to: Apple M1

systemMemory: 16.00 GB
maxCacheSize: 5.33 GB

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { microserviceConfig} from "./msKafkaConfig";

async function bootstrap() {
  const app = await NestFactory.create(AppModule, { cors: true}); // DOESN'T WORK
  app.enableCors(); // DOESN'T WORK

  app.connectMicroservice(microserviceConfig);
  await app.startAllMicroservices();

  
  // DOESN'T WORK
  app.use((req, res, next) => {
    res.header('Access-Control-Allow-Origin', '*');
    res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,PATCH,OPTIONS,UPGRADE,CONNECT,TRACE');
    res.header('Access-Control-Allow-Headers', 'Content-Type, Accept');
    next();
  });
  
  await app.listen(3000);



}
bootstrap();

Access to XMLHttpRequest at 'http://localhost:3000/socket.io/?EIO=4&transport=polling&t=Nm4kVQ1' from origin 'http://localhost:4200' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Request URL: http://localhost:3000/socket.io/?EIO=4&transport=polling&t=Nm4kUZ-
Referrer Policy: strict-origin-when-cross-origin
Connection: keep-alive
Content-Length: 97
Content-Type: text/plain; charset=UTF-8
Date: Mon, 20 Sep 2021 19:41:05 GMT
Keep-Alive: timeout=5
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: en,de-DE;q=0.9,de;q=0.8,en-US;q=0.7,es;q=0.6
Cache-Control: no-cache
Connection: keep-alive
Host: localhost:3000
Origin: http://localhost:4200
Pragma: no-cache
Referer: http://localhost:4200/
sec-ch-ua: "Google Chrome";v="93", " Not;A Brand";v="99", "Chromium";v="93"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-site
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36
EIO: 4
transport: polling
t: Nm4kUZ-

import org.java_websocket.WebSocket;
import org.java_websocket.handshake.ClientHandshake;
import org.java_websocket.server.WebSocketServer;

import java.net.InetSocketAddress;
import java.util.HashSet;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class WebsocketServer extends WebSocketServer {

    private static final Logger logger = LogManager.getLogger(WebsocketServer.class);

    private static int TCP_PORT = 6868;

    private static Set conns;

    public WebsocketServer() {
        super(new InetSocketAddress(TCP_PORT));
        conns = new HashSet<>();
    }

    @Override
    public void onOpen(WebSocket conn, ClientHandshake handshake) {
        conns.add(conn);
        logger.info("New connection from " + conn.getRemoteSocketAddress().getAddress().getHostAddress());
        logger.info("Size of connection list: " + conns.size());
    }

    @Override
    public void onClose(WebSocket conn, int code, String reason, boolean remote) {
        conns.remove(conn);
        logger.info("Closed connection to " + conn.getRemoteSocketAddress().getAddress().getHostAddress());
    }

    @Override
    public void onMessage(WebSocket conn, String message) {
        logger.info("Message from client: {}", message);
        // for (WebSocket sock : conns) {
        // sock.send("SENDING BACK" + message);
        // }
    }

    @Override
    public void onError(WebSocket conn, Exception ex) {

        // ex.printStackTrace();
        try {
            if (conn != null) {
                conns.remove(conn);
                // do some thing if required
            }
            logger.info("ERROR from {}", conn.getRemoteSocketAddress().getAddress().getHostAddress());
        } catch (Exception e) {
            logger.info("onError: WebSocketServer may already be running");

        }

    }

    public Set getConns() {
        return conns;
    }

}

WebsocketServer websocketServer;
// Start socket server
websocketServer = new WebsocketServer();
websocketServer.start();

    // APP_WEB_SOCKET is the url to my site: api.my_custom_domain.com
    var connection = new WebSocket("wss://" + APP_WEB_SOCKET + ":6868");

WebsocketServer websocketServer;
// Start socket server
websocketServer = new WebsocketServer();

// example guessing
websocketServer.cert = "SOMETHING";??
websocketServer.start();

this.peerconnection = new RTCPeerConnection(this.peerservers);
    this.peerconnection.onicecandidate = (event) => {
      if (event.candidate && event.candidate.candidate) {
        var candidate = {
          sdpMLineIndex: event.candidate.sdpMLineIndex,
          sdpMid: event.candidate.sdpMid,
          candidate: event.candidate.candidate
        };
        var request = {
          what: "addIceCandidate",
          data: JSON.stringify(candidate)
        };
        this.websockets.send(JSON.stringify(request));
      } else {
        console.log("End of candidates.");
      }
    };

onTrack(event) {
    this.remoteVideo.srcObject = event.streams[0];
  }

let oldXHROpen = window.XMLHttpRequest.prototype.open;
window.lastXhr = '';
window.XMLHttpRequest.prototype.open = function(method, url, async, user, password) {
  this.addEventListener('load', function() {
    window.lastXhr = this.responseText;
  });
  return oldXHROpen.apply(this, arguments);
};