spring PingMessage 源码
spring PingMessage 代码
文件路径：/spring-websocket/src/main/java/org/springframework/web/socket/PingMessage.java
/*
* Copyright 2002-2017 the original author or authors.
*
* 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
*
* https://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 org.springframework.web.socket;
import java.nio.ByteBuffer;
/**
* A WebSocket ping message.
*
* @author Rossen Stoyanchev
* @since 4.0
*/
public final class PingMessage extends AbstractWebSocketMessage<ByteBuffer> {
/**
* Create a new ping message with an empty payload.
*/
public PingMessage() {
super(ByteBuffer.allocate(0));
}
/**
* Create a new ping message with the given ByteBuffer payload.
* @param payload the non-null payload
*/
public PingMessage(ByteBuffer payload) {
super(payload);
}
@Override
public int getPayloadLength() {
return getPayload().remaining();
}
@Override
protected String toStringPayload() {
return getPayload().toString();
}
}
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