Package com.vaadin.flow.server.communication

Class ServerRpcHandler.MessageIdSyncException

java.lang.Object

java.lang.Throwable

java.lang.Exception

com.vaadin.flow.server.communication.ServerRpcHandler.MessageIdSyncException

All Implemented Interfaces:

Serializable

Enclosing class:

ServerRpcHandler

public static class ServerRpcHandler.MessageIdSyncException
extends Exception

Exception thrown when the client sends a message with an unexpected message ID, indicating that the client and server are out of sync.

This typically occurs when a server pod terminates abruptly (e.g., OOMKilled, SIGKILL) before UI state can be serialized to distributed session storage. When clients reconnect to a healthy pod, their message ID exceeds what the server expects.

Since:

25.1

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
MessageIdSyncException(int expectedId, int receivedId)	Creates a new MessageIdSyncException with the expected and received message IDs.

Method Summary

Modifier and Type	Method	Description
int	getExpectedId()	Gets the message ID the server expected.
int	getReceivedId()	Gets the message ID received from the client.

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

MessageIdSyncException

public MessageIdSyncException(int expectedId,
 int receivedId)

Creates a new MessageIdSyncException with the expected and received message IDs.

Parameters:

expectedId - the message ID the server expected

receivedId - the message ID received from the client

Method Details

getExpectedId

public int getExpectedId()

Gets the message ID the server expected.

Returns:

the expected message ID

getReceivedId

public int getReceivedId()

Gets the message ID received from the client.

Returns:

the received message ID