/*
* Copyright 2000-2016 Vaadin Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.vaadin.shared.communication;
import java.io.Serializable;
/**
* Shared constants used by push.
*
* @since 7.1
* @author Vaadin Ltd
*/
public class PushConstants implements Serializable {
/**
* The size, in <b>bytes</b>, of the receiving buffer used by some servers.
* <p>
* Should not be set to a value equal to or greater than 32768 due to a
* Jetty 9.1 issue (see #13087)
*/
public static final int WEBSOCKET_BUFFER_SIZE = 16384;
/**
* The maximum size, in <b>characters</b>, of a websocket message fragment.
* This is a conservative maximum chosen so that the size in bytes will not
* exceed {@link PushConstants#WEBSOCKET_BUFFER_SIZE} given a UTF-8 encoded
* message.
*/
public static final int WEBSOCKET_FRAGMENT_SIZE = WEBSOCKET_BUFFER_SIZE / 4
- 1;
/**
* The character used to mark message boundaries when messages may be split
* into multiple fragments.
*/
public static final char MESSAGE_DELIMITER = '|';
}