spring SockJsServiceConfig 源码
spring SockJsServiceConfig 代码
文件路径：/spring-websocket/src/main/java/org/springframework/web/socket/sockjs/transport/SockJsServiceConfig.java
/*
* Copyright 2002-2022 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.sockjs.transport;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.web.socket.sockjs.SockJsService;
import org.springframework.web.socket.sockjs.frame.SockJsMessageCodec;
/**
* Provides transport handling code with access to the {@link SockJsService} configuration
* options they need to have access to. Mainly for internal use.
*
* @author Rossen Stoyanchev
* @since 4.0
*/
public interface SockJsServiceConfig {
/**
* A scheduler instance to use for scheduling heart-beat messages.
*/
TaskScheduler getTaskScheduler();
/**
* Streaming transports save responses on the client side and don't free
* memory used by delivered messages. Such transports need to recycle the
* connection once in a while. This property sets a minimum number of bytes
* that can be send over a single HTTP streaming request before it will be
* closed. After that client will open a new request. Setting this value to
* one effectively disables streaming and will make streaming transports to
* behave like polling transports.
* <p>The default value is 128K (i.e. 128 * 1024).
*/
int getStreamBytesLimit();
/**
* The amount of time in milliseconds when the server has not sent any
* messages and after which the server should send a heartbeat frame to the
* client in order to keep the connection from breaking.
* <p>The default value is 25,000 (25 seconds).
*/
long getHeartbeatTime();
/**
* The number of server-to-client messages that a session can cache while waiting for
* the next HTTP polling request from the client. All HTTP transports use this
* property since even streaming transports recycle HTTP requests periodically.
* <p>The amount of time between HTTP requests should be relatively brief and will not
* exceed the allows disconnect delay (see
* {@link org.springframework.web.socket.sockjs.support.AbstractSockJsService#setDisconnectDelay(long)}),
* 5 seconds by default.
* <p>The default size is 100.
*/
int getHttpMessageCacheSize();
/**
* The codec to use for encoding and decoding SockJS messages.
* @throws IllegalStateException if no {@link SockJsMessageCodec} is available
*/
SockJsMessageCodec getMessageCodec();
}
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