MqttServerTest.java

/*
 * Copyright (c) 2019-2029, Dreamlu 卢春梦 (596392912@qq.com & dreamlu.net).
 *
 * 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 net.dreamlu.iot.mqtt.server;

import net.dreamlu.iot.mqtt.codec.ByteBufferUtil;
import net.dreamlu.iot.mqtt.core.server.MqttServer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.nio.ByteBuffer;
import java.util.Timer;
import java.util.TimerTask;

/**
 * mqtt 服务端测试
 *
 * @author L.cm
 */
public class MqttServerTest {
	private static final Logger logger = LoggerFactory.getLogger(MqttServerTest.class);

	public static void main(String[] args) {
		// 注意：为了能接受更多链接（降低内存），请添加 jvm 参数 -Xss129k
		MqttServer mqttServer = MqttServer.create()
			// 默认：127.0.0.1
			.ip("127.0.0.1")
			// 默认：1883
			.port(1883)
			// 默认为： 8092（mqtt 默认最大消息大小），为了降低内存可以减小小此参数，如果消息过大 t-io 会尝试解析多次（建议根据实际业务情况而定）
			.readBufferSize(512)
//			最大包体长度
//			.maxBytesInMessage(1024 * 100)
//			mqtt 3.1 协议会校验 clientId 长度。
//			.maxClientIdLength(64)
			.messageListener((clientId, topic, mqttQoS, payload) -> {
				logger.info("clientId:{} topic:{} mqttQoS:{} message:{}", clientId, topic, mqttQoS, ByteBufferUtil.toString(payload));
			})
			.debug() // 开启 debug 信息日志
			.start();

		Timer timer = new Timer();
		timer.schedule(new TimerTask() {
			@Override
			public void run() {
				mqttServer.publishAll("/test/123", ByteBuffer.wrap("mica最牛皮".getBytes()));
			}
		}, 1000, 2000);
	}
}