STOMP Connection Closes Due to Missing Heartbeats Despite Frontend Showing Ping-Pongs

[abhishek0499]

I’m experiencing a connection issue with WebSocket STOMP in Spring Boot using ActiveMQ Artemis. Despite proper heartbeat configurations, the broker closes the connection with the following error:
AMQ229014: Did not receive data from /192.0.2.1:46748 within the 20000ms connection TTL.

Setup

• Frontend: SockJS and Stomp.js, showing regular ping/pong exchanges in the browser console.
• Backend: Spring Boot using StompBrokerRelayMessageHandler with custom ReactorNettyTcpClient for broker connections. Relevant configuration:

public void configureMessageBroker(MessageBrokerRegistry config) {
    int sendInterval = 10000; // Send interval in milliseconds
    int receiveInterval = (int) (sendInterval * heartBeatReceiveScale);
    config.setApplicationDestinationPrefixes("/app");
    config.enableStompBrokerRelay("/topic", "/queue")
            .setUserDestinationBroadcast("/topic/random")
            .setUserRegistryBroadcast("/topic/simp-user-registry")
            .setTcpClient(createTcpClient())
            .setSystemLogin(username)
            .setSystemPasscode(password)
            .setClientLogin(username)
            .setClientPasscode(password)
            .setSystemHeartbeatSendInterval(sendInterval) // Set heartbeat send interval
            .setSystemHeartbeatReceiveInterval(receiveInterval);
}

Logs confirm a CONNECTED frame with heart-beat=[10000, 10000].

Observations

• Frontend pings/pongs appear consistent.
• Backend logs indicate heartbeats are sent and received.
• Connection closes after the TTL timeout (20 seconds).

Questions

• How can I verify heartbeats are properly received by the broker?
• Are additional Spring Boot or Artemis configurations required to prevent disconnections?

Steps to Reproduce

• Configure WebSocket STOMP with a broker using the above setup.
• Send/receive heartbeats with the specified intervals.
• Observe connection closure in logs despite consistent heartbeats.

Additional Context
Backend logs:
DEBUG StompBrokerRelayMessageHandler : Received CONNECTED heart-beat=[10000, 10000] session=itwv0lto DEBUG StompBrokerRelayMessageHandler : Forwarding SEND /topic/simp-user-registry session=_system_

[wilkinsona]

Duplicates spring-projects/spring-framework#34009. @abhishek0499 please respect the maintainers' time by not opening the same issue in multiple repositories.