Package com.vaadin.flow.shared.communication

Class PushConstants

java.lang.Object

com.vaadin.flow.shared.communication.PushConstants

All Implemented Interfaces:

Serializable

public class PushConstants
extends Object
implements Serializable

Shared constants used by push.

Since:

1.0

Author:

Vaadin Ltd

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final char	MESSAGE_DELIMITER	The character used to mark message boundaries when messages may be split into multiple fragments.
static final int	WEBSOCKET_BUFFER_SIZE	The size, in bytes, of the receiving buffer used by some servers.
static final int	WEBSOCKET_FRAGMENT_SIZE	The maximum size, in characters, of a websocket message fragment.

Constructor Summary

Constructors

Constructor	Description
PushConstants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Details

WEBSOCKET_BUFFER_SIZE

public static final int WEBSOCKET_BUFFER_SIZE

The size, in bytes, of the receiving buffer used by some servers.

Should not be set to a value equal to or greater than 32768 due to a Jetty 9.1 issue (see #13087)

See Also:

• Constant Field Values

WEBSOCKET_FRAGMENT_SIZE

public static final int WEBSOCKET_FRAGMENT_SIZE

The maximum size, in characters, of a websocket message fragment. This is a conservative maximum chosen so that the size in bytes will not exceed WEBSOCKET_BUFFER_SIZE given a UTF-8 encoded message.

See Also:

• Constant Field Values

MESSAGE_DELIMITER

public static final char MESSAGE_DELIMITER

The character used to mark message boundaries when messages may be split into multiple fragments.

See Also:

• Constant Field Values

Constructor Details

PushConstants

public PushConstants()